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  • 101.
    Han, Song
    et al.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Dotzauer, Erik
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Thorin, Eva
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Jan, Yinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Annual performance analysis and comparison of pellet production integrated with an existing combined heat and power plant2011Inngår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 102, nr 10, s. 6317-6325Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Three optional pellet production processes integrated with an existing biomass-based CHP plant using different raw materials (wood chips and solid hydrolysis residues) are studied. The year is divided into 12 periods, and the integrated biorefinery systems are modeled and simulated for each period. The annual economic performance of three integrated biorefinery systems is analyzed based on the simulation results. The option of pellet production integrated with the existing CHP plant with the exhaust flue gas and superheated steam as drying mediums has the lowest specific pellet production cost of 105 €/tpellet, the shortest payback time of less than 2 years and the greatest CO2 reduction of the three options. An advantage in common among the three options is a dramatic increase of the total annual power production and significant CO2 reduction in spite of a small decrease of power efficiency.

  • 102.
    Han, Song
    et al.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling. Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Dotzauer, Erik
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Thorin, Eva
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling. Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Techno-economic analysis of an integrated biorefinery system for poly-generation of power, heat, pellets and bioethanol2014Inngår i: International Journal of Energy Research, ISSN 0363-907X, E-ISSN 1099-114X, Vol. 38, nr 5, s. 551-563Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Bioethanol is an alternative to fossil fuels in the transportation sector. The use of pellet for heating is also an efficient way to mitigate greenhouse gas emissions. This paper evaluates the techno-economic performance of a biorefinery system in which an existing combined heat and power (CHP) plant is integrated with the production of bioethanol and pellet using straw as feedstock. A two-stage acid hydrolysis process is used for bioethanol production, and two different drying technologies are applied to dry hydrolysis solid residues. A sensitivity analysis is performed on critical parameters such as the bioethanol selling price and feedstock price. The bioethanol production cost is also calculated for two cases with either 10 year or 15 year payback times. The results show that the second case is currently a more feasible economic configuration and reduces production costs by 36.4%-77.3% compared to other types of poly-generation plants that are not integrated into existing CHP plants. 

  • 103.
    Han, Song
    et al.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Dotzauer, Erik
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Thorin, Eva
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Yan, Jinyue
    School of Chemical Science, Royal Institute of Technology, Stockholm, Sweden.
    Techno-economic analysis of an integrated biorefinerysystem for poly-generation of power, heat, pelletand bioethanol2014Inngår i: Energy, ISSN 0360-5442, E-ISSN 1873-6785, nr 38, s. 551-563Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Abstract: Bioethanol is considered an alternative to fossil fuels in the transportation sector. The use of pellets for heating is another efficient way to mitigate greenhouse gas emissions. This paper evaluates the techno-economic performance of a biorefinery system in which an existing combined heat and power plant integrates with the productions of bioethanol and pellets using straw as feedstock. A two-stage acid hydrolysis process for bioethanol production is used, and two different drying technologies are chosen for drying hydrolysis solid residues. A sensitivity analysis on critical parameters, such as the bioethanol selling price and feedstock price, is performed. The bioethanol production cost is also calculated for two cases at the conditions of ten-year and five-year payback time. The results show that the first case is a more feasible economic configuration at present, having an over 30% production cost reduction compared with the conventional cogeneration plants of bioethanol and solid fuel.

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  • 104.
    Han, Song
    et al.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Starfelt, Fredrik
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Daianova, Lilia
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Influence of drying process on the biomass-based polygeneration system of bioethanol, power and heat2012Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 90, nr 1/SI, s. 32-37Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    One of the by-products from bioethanol production using woody materials is lignin solids, which can be utilized as feedstock for combined heat and power (CHP) production. In this paper, the influence of integrating a drying process into a biomass-based polygeneration system is studied, where the exhaust flue gas is used to dry the lignin solids instead of direct condensation in the flue gas condenser (FGC). The evaporated water vapor from the lignin solids is mixed with the drying medium for consequent condensation. Thus, the exhaust flue gas after the drying still has enough humidity to produce roughly the same amount of condensation heat as direct condensation in the existing configuration. The influence of a drying process and how it interacts with the FGC in CHP production as a part of the  polygeneration system is analyzed and evaluated. If a drying process is integrated with the polygeneration system, overall energyefficiency is only increased by 3.1% for CHP plant, though the power output can be increased by 5.5% compared with the simulated system using only FGC.

  • 105.
    Hao, D.
    et al.
    School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China.
    Qi, Lingfei
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China.
    Tairab, A. M.
    School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China.
    Ahmed, A.
    School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, China.
    Azam, A.
    School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China.
    Luo, D.
    School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China.
    Pan, Y.
    School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China.
    Zhang, Z.
    School of Mechanical Engineering, Southwest Jiaotong University, Chengdu, China.
    Yan, Jinyue
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Solar energy harvesting technologies for PV self-powered applications: A comprehensive review2022Inngår i: Renewable energy, ISSN 0960-1481, E-ISSN 1879-0682, Vol. 188, s. 678-697Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Many key aspects of society, such as transport, housing and health care, have been significantly improved by the advent of a range of electricity applications, and the power generation for electricity applications has been a major field of research. Photovoltaic (PV) self-powered technologies are promising technologies for addressing applications' power supply challenges and alleviating conventional electricity load and environmental pollution. This study reviews solar energy harvesting (SEH) technologies for PV self-powered applications. First, the PV power generation and scenarios of PV self-powered applications are analyzed. Second, analysis of system design for PV self-powered applications is presented. Third, key components for PV self-powered applications, including maximum power point tracking (MPPT) techniques and power management (PM) systems are discussed in detail. Furthermore, numerous PV self-powered applications and utilizations of energy harvesting are summarized. Finally, some recommendations are proposed for further research.

  • 106.
    Hao, Y.
    et al.
    Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, China.
    Li, W.
    Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, China.
    Tian, Z.
    Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, 100190, China.
    Campana, Pietro Elia
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. KTH Royal Institute of Technology, Stockholm, Sweden.
    Li, Hailong
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, China.
    Jin, H.
    Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, China.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. KTH Royal Institute of Technology, Stockholm, Sweden.
    Integration of concentrating PVs in anaerobic digestion for biomethane production2018Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, ISSN 0306-2619, Vol. 231, s. 80-88Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Biogas produced from anaerobic digestion processes is considered as an important alternative to natural gas and plays a key role in the emerging market for renewable energy. Aiming at achieving a more sustainable and efficient biomethane production, this work proposed a novel energy system, which integrates concentrating photovoltaic/thermal (C-PV/T) hybrid modules into a biogas plant with chemical absorption for biogas upgrading. The investigated energy system was optimized based on the data from an existing biogas plant, and its techno-economic feasibility was evaluated. Results show that about 7% of the heat consumption and 12% of the electricity consumption of the biogas plant can be covered by solar energy, by using the produced heat in a cascade way according to the operating temperature of different processes. The production of biomethane can also be improved by 25,800 N m3/yr (or 1.7%). The net present value of the integrated system is about 2.78 MSEK and the payback period is around 10 years. In order to further improve the economic performance, it is of great importance to lower the capital cost of the C-PV/T module. 

  • 107.
    He, W.
    et al.
    Tianjin University of Commerce, Tianjin, China.
    Tao, L.
    HuBei University, Wuhan, China.
    Han, L.
    Harbin Institute of Technology, Harbin, China.
    Sun, Y.
    Northwestern Polytechnical University, Xi'an, China.
    Campana, Pietro Elia
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Optimal analysis of a hybrid renewable power system for a remote island2021Inngår i: Renewable energy, ISSN 0960-1481, E-ISSN 1879-0682, Vol. 179, s. 96-104Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Considering the current challenges posed by energy structural transformation on remote islands, the technical and economic assessment of a hybrid renewable power system were performed considering the Huraa Island of Maldives as a case study. This work models and discusses possible hybrid power system configuration modes based on varying combinations of diesel power, solar photovoltaic (PV) power, wind power, and battery storage. For each mode, the effects of the installed capacity on renewable penetration (RP) and levelized cost of electricity (LCOE) were analyzed. Furthermore, the configuration modes were compared, and optimal operation schemes were developed by considering RP, LCOE, and CO2 emissions. The results suggest that the use of a high-rated PV power is optimal owing to its high RP and low LCOE. However, when wind power is available, a wind power rating of 1000 kW is an optimal solution, followed by a 500-kW rating; when battery storage is used, a battery capacity of 4000 kWh is ideal. Moreover, it is unnecessary to combine battery storage with these power schemes when an RP <53% is acceptable. The recommended maximum available RP is approximately 96% when using an 1800 kW PV, 1000 kW wind, and 4000 kWh battery storage system.

  • 108.
    Hedin, N.
    et al.
    Stockholm University.
    Andersson, L.
    Stockholm University.
    Bergström, L.
    Stockholm University.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Adsorbents for the post-combustion capture of CO2 using rapid temperature swing or vacuum swing adsorption2013Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 104, s. 418-433Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In general, the post-combustion capture of CO2 is costly; however, swing adsorption processes can reduce these costs under certain conditions. This review highlights the issues related to adsorption-based processes for the capture of CO2 from flue gas. In particular, we consider studies that investigate CO2 adsorbents for vacuum swing or temperature swing adsorption processes. Zeolites, carbon molecular sieves, metal organic frameworks, microporous polymers, and amine-modified sorbents are relevant for such processes. The large-volume gas flows in the gas flue stacks of power plants limit the possibilities of using regular swing adsorption processes, whose cycles are relatively slow. The structuring of CO2 adsorbents is crucial for the rapid swing cycles needed to capture CO2 at large point sources. We review the literature on such structured CO2 adsorbents. Impurities may impact the function of the sorbents, and could affect the overall thermodynamics of power plants, when combined with carbon capture and storage. The heat integration of the adsorption-driven processes with the power plant is crucial in ensuring the economy of the capture of CO2, and impacts the design of both the adsorbents and the processes. The development of adsorbents with high capacity, high selectivity, rapid uptake, easy recycling, and suitable thermal and mechanical properties is a challenging task. These tasks call for interdisciplinary studies addressing this delicate optimization process, including integration with the overall thermodynamics of power plants. © 2012 Elsevier Ltd.

  • 109.
    Hellstrand, Stefan
    et al.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    THE POTENTIAL TO INCREASE SUSTAINABLE GLOBAL GREEN ENERGY PRODUCTION THROUGH INCREASED EFFICIENCY IN MILK AND CATTLE PRODUCTION: - A SWEDISH CASE2009Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper addresses the potential of sustainability improvement by increased efficiencyin milk and cattle production. The experience of Swedish improvement over the last half centuryreveals the global potential for the sustainable management of land use, nutrition balance andbioenergy supply.Ruminants are an important part of the global food production system. Ruminantproduction has the potential to substantially increase land area available for bioenergy production.They can use energy in foodstuffs with none human nutritive value and simple nitrogencompounds in the production of high quality feeds. They can convert renewable natural resourcesfrom ecosystems, that otherwise have low capacity to transform solar energy fluxes to food, tohigh quality food.Globally, the area of pasture is 2.5 times larger than the area of cropland. Ruminants arean important part of the global food system, supplying human energy metabolism. Due to thecompetition for land, the skilfulness in rumen production affects potentials for green energyproduction supplying the energy metabolism in the technical systems of society.This paper discusses two aspects of ruminant production affecting the potential for greenenergy production:(i) The impact of increased nutritional physiological efficiency, i.e., better feedingstrategies, and(ii) The importance of utilising ruminants as ruminants, where they transform solar energyfluxes to high quality foodstuffs from ecosystems with low capacity to produce food throughother paths.The focal point is the impact on the land remaining for green energy production supplyingthe technical systems of society, after food supply needs are met. Estimates are provided on theimpact on other sustainability aspects at different system levels as well as in the threesustainability-dimensions. The results are provided through the application of a methodologywithin the frame of integrated assessment for analysis of sustainability effects in systems withmutual dependencies between systems and system levels. This is of general interest as amethodology, supporting the development of sustainable green energy production and meetingthe needs of society. It contributes with concrete results, supporting an increased sustainableproduction of green energy due to increased efficiency within a sector that competes for land

  • 110.
    Hoggett, R.
    et al.
    University of Exeter, UK.
    Bolton, R.
    University of Edinburgh, UK.
    Candelise, C.
    Imperial College London, UK.
    Kern, F.
    University of Sussex, UK.
    Mitchell, C.
    University of Exeter, UK.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik. Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Supply chains and energy security in a low carbon transition2014Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 123, s. 292-295Artikkel i tidsskrift (Annet vitenskapelig)
  • 111. Hongliang, Li
    et al.
    Xinhai, Yu
    Xiangdong, Tu
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Z.D, Wang
    Catalytic performance and characterization of Al2O3-supported Pt-Co catalyst coatings for preferential CO oxidation at high activity2010Inngår i: Applied Catalysis A: General, ISSN 0926-860X, E-ISSN 1873-3875, Vol. 387, nr 1-2, s. 215-223Artikkel i tidsskrift (Annet vitenskapelig)
  • 112.
    Hu, Y.
    et al.
    KTH.
    Li, Hailong
    KTH.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Integration of Evaporative Gas Turbine with Oxy-Fuel Combustion for Carbon Dioxide Capture2010Inngår i: International Journal of Green Energy, ISSN 1543-5075, E-ISSN 1543-5083, Vol. 7, nr 6, s. 615-631Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper studied the integration of Evaporative Gas Turbine (EvGT) cycle with oxy-fuel combustion for CO2 capture. The impact of key parameters on system electrical efficiency, such as the oxygen purity, Water/Gas ratio (W/G) has been investigated concerning thermal efficiency. The performance of dry recycle and wet recycle also has be analyzed and compared. Simulation results shows that: (1) 97% can be considered as the optimum oxygen purity taking into account the trade-off between the air separation unit (ASU) consumption penalty of producing higher-purity oxygen and electrical efficiency; (2) there exists an optimum point of W/G for both EvGT and EvGT combined with oxy-fuel combustion CO2 capture technology; (3) dry recycle has a considerably higher electrical efficiency comparing with wet recycle, but more cooled water can be saved in the wet recycle. The performance of EvGT cycle was also compared to the combined cycle (CC) when CO2 capture was considered. The comparison shows that CC has a higher net power output and electrical efficiency than the EvGT cycle no matter if combined with oxy-fuel combustion CO2 capture technology or not.

  • 113.
    Hu, Y.
    et al.
    Royal Institute of Technology, Sweden.
    Li, Hailong
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Royal Institute of Technology, Sweden.
    Numerical investigation of heat transfer characteristics in utility boilers of oxy-coal combustion2014Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 130, nr 1, s. 543-551Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Oxy-coal combustion has different flue gas composition from the conventional air-coal combustion. The different composition further results in different properties, such as the absorption coefficient, emissivity, and density, which can directly affect the heat transfer in both radiation and convection zones of utility boilers. This paper numerically studied a utility boiler of oxy-coal combustion and compares with air-coal combustion in terms of flame profile and heat transferred through boiler side walls in order to understand the effects of different operating conditions on oxy-coal boiler retrofitting and design. Based on the results, it was found that around 33vol% of effective O2 concentration ([O2]effective) the highest flame temperature and total heat transferred through boiler side walls in the oxy-coal combustion case match to those in the air-coal combustion case most; therefore, the 33vol% of [O2]effective could result in the minimal change for the oxy-coal combustion retrofitting of the existing boiler. In addition, the increase of the moisture content in the flue gas has little impact on the flame temperature, but results in a higher surface incident radiation on boiler side walls. The area of heat exchangers in the boiler was also investigated regarding retrofitting. If boiler operates under a higher [O2]effective, to rebalance the load of each heat exchanger in the boiler, the feed water temperature after economizer can be reduced or part of superheating surfaces can be moved into the radiation zone to replace part of the evaporators

  • 114.
    Hu, Y.
    et al.
    Royal Institute of Technology .
    Li, X.
    Tianjin University, School of Mechanical Engineering, China .
    Li, Hailong
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Peak and off-peak operations of the air separation unit in oxy-coal combustion power generation systems2013Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 112, s. 747-754Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Introducing CO2 capture and storage (CCS) into the power systems requires the re-investigation of the load balance for the electrical grid. For the oxy-coal combustion capture technology, the energy use of ASU can be shifted between the peak-load and off-peak-load periods, which may bring more benefits. In this paper, peak and off-peak (POP) operations for the air separation unit (ASU) with liquid oxygen storage were studied based on a 530MW coal-fired power system. According to the simulation results, the oxy-coal combustion power system running POP is technically feasible that it can provide a base load of 496MW during the off-peak period and a peak load of 613MW during the peak period. And the equivalent efficiency of the power system running POP is only 0.3% lower than the one not running POP. Moreover, according to the economic assessments based on the net present value, it is also economically feasible that the payback time of the investment of the oxy-coal combustion power system running POP is about 13years under the assumptions of 10% discount rate and 2.5% cost escalation rate. In addition, the effects of the difference of on-grid electricity prices, daily peak period, investment for POP operations, and ASU energy consumption were also analyzed, concerning the net present value.

  • 115.
    Hu, Y.
    et al.
    Cranfield University, Bedford, United Kingdom.
    Tewari, A.
    Cranfield University, Bedford, United Kingdom.
    Varga, L.
    Cranfield University, Bedford, United Kingdom.
    Li, Hailong
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Royal Institute of Technology, Stockholm, Sweden.
    System dynamics of oxyfuel power plants with liquid oxygen energy storage2017Inngår i: Energy Procedia, ISSN 1876-6102, Vol. 142, s. 3727-3733Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Traditional energy storage systems have a common feature: the generating of secondary energy (e.g. electricity) and regenerating of stored energy (e.g. gravitational potential, and mechanical energy) are separate rather than deeply integrated. Such systems have to tolerate the energy loss caused by the second conversion from primary energy to secondary energy. This paper is concerned with the system dynamics of oxyfuel power plants with liquid oxygen energy storage, which integrates the generation of secondary energy (electricity) and regeneration of stored energy into one process and therefore avoids the energy loss caused by the independent process of regeneration of stored energy. The liquid oxygen storage and the power load of the air separation unit are self-adaptively controlled based on current-day power demand, day-ahead electricity price and real-time oxygen storage information. Such an oxyfuel power plant cannot only bid in the day-ahead market with base load power but also has potential to provide peak load power through reducing the load of the air separation unit in peak time. By introducing reasoning rules with fuzzy control, the oxygen storage system has potential to be further extended by integrating renewable energy resources into the system to create a cryogenic energy storage hub. 

  • 116.
    Hu, Y.
    et al.
    Royal Institute of Technology.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
    Numerical simulation of radiation intensity of oxy-coal combustion with flue gas recirculation2013Inngår i: International Journal of Greenhouse Gas Control, ISSN 1750-5836, E-ISSN 1878-0148, Vol. 17, s. 473-480Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Oxy-fuel combustion is one of potential technologies for carbon dioxide (CO2) capture in fossil fuel fired power plants. Characterization of flue gas composition in the oxy-fuel combustion differs from that of conventional air-coal combustion, which results in the change of radiative heat transfer in combustion processes. This paper presents a numerical study of radiation intensity on lateral walls based on the experimental results of a 0.5MW combustion test facility (CTF). Differences in the oxy-coal combustion are analyzed, such as flue gas recycle, absorption coefficient and radiation intensity. The simulation results show that an effective O2 concentration ([O2]effective) between 29 and 33vol% (equivalent to the flue gas recycle ratio of 72-69%) constitutes a reasonable range, within this range the behavior of oxy-coal combustion is similar to air-coal combustion. Compared with the air-coal combustion, the lower limit (29vol%) of this range results in a similar radiative heat flux at the region closed to the burner, but a lower radiative heat flux in the downstream region of the CTF; the upper limit (33vol%) of this range results in a higher radiative heat flux at the region closed to the burner, while a similar radiative heat flux in the downstream region of the CTF

  • 117.
    Hu, Yukun
    et al.
    Royal Inst Technol.
    Li, Hailong
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Techno-economic evaluation of the evaporative gas turbine cycle with different CO(2) capture options2012Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 89, nr 1, s. 303-314Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The techno-economic evaluation of the evaporative gas turbine (EvGT) cycle with two different CO(2) capture options has been carried out. Three studied systems include a reference system: the EvGT system without CO(2) capture (System I), the EvGT system with chemical absorption capture (System II), and the EvGT system with oxyfuel combustion capture (System III). The cycle simulation results show that the system with chemical absorption has a higher electrical efficiency (41.6% of NG LHV) and a lower efficiency penalty caused by CO(2) capture (10.5% of NG LHV) compared with the system with oxyfuel combustion capture. Based on a gas turbine of 13.78 MW, the estimated costs of electricity are 46.1 $/MW h for System I. while 70.1 $/MW h and 74.1 $/MW h for Systems II and III, respectively. It shows that the cost of electricity increment of chemical absorption is 8.7% points lower than that of the option of oxyfuel combustion. In addition, the cost of CO(2) avoidance of System II which is 71.8 $/tonne CO(2) is also lower than that of System III, which is 73.2 $/tonne CO(2). The impacts of plant size have been analyzed as well. Results show that cost of CO(2) avoidance of System III may be less than that of System II when a plant size is larger than 60 MW.

  • 118.
    Hu, Yukun
    et al.
    Royal Inst Technol .
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Li, Hailong
    Effects of flue gas recycle on oxy-coal power generation system2012Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 97, nr SI, s. 255-263Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper examined and assessed various configuration options about emission removal including particles. SOx and NOx in an oxy-coal combustion system for CO2 capture. A performance analysis was conducted in order to understand the impacts of those options concerning process design, process operation and system efficiency. Results show that different flue gas recycle options have clear effects on the emissivity and absorptivity of radiating gases in boiler due to the change of flue gas compositions. The maximum difference amongst various options can be up to 15% and 20% for emissivity and absorptivity respectively. As a result, the heat transfer by radiation can vary about 20%. The recycle options also have impacts on the design of air heater and selective-catalytic-reduction (SCR) preheater. This is due to that the largely varied operating temperatures in different options may result in different required areas of heat exchangers. In addition, the dew point of flue gas and the boiler efficiency are affected by the configurations of flue gas recycle as well.

  • 119.
    Huang, C.
    et al.
    Tongji University, Shanghai, China.
    Li, Y.
    Tongji University, Shanghai, China.
    Li, X.
    Tongji University, Shanghai, China.
    Wang, H.
    Tongji University, Shanghai, China.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Royal Institute of Technology (KTH), Sweden.
    Wang, X.
    Tongji University, Shanghai, China.
    Wu, J.
    Tongji University, Shanghai, China.
    Li, F.
    Tongji University, Shanghai, China.
    Understanding the water-energy nexus in urban water supply systems with city features2018Inngår i: Energy Procedia, Elsevier Ltd , 2018, s. 265-270Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The water-energy nexus has been introduced into urban water supply systems (WSSs) to improve the current plight of scarce resources and greenhouse effect in recent years. Urban water-energy integrated management is limited by the characteristics and reality of each city. In this paper, we characterize the comprehensive influence factors of energy use in China urban WSSs including geographic differences and city forms. The results indicate that the pressure of pipeline network and plain area ratio restricted by geomorphology would significantly impact the energy consumption during conveyance and distribution stage. For the city form aspect, the total volume of urban water supply and the leakage rate of pipeline networks play important roles in energy consumption of urban WSSs in China. In this study, the specific electricity consumption in WSSs was quantified, and several factors affected by city features which show strong correlation with energy use were determined. The results are of great significance to the energy saving in water supply systems in urban areas.

  • 120.
    Huang, J.
    et al.
    East China University of Science and Technology, Shanghai, China.
    Yang, J.
    East China University of Science and Technology, Shanghai, China.
    Yu, X.
    East China University of Science and Technology, Shanghai, China.
    Tu, S. -T
    East China University of Science and Technology, Shanghai, China.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Energy-efficient extraction of fuel from chlorella combined with CO2 capture2014Inngår i: Energy Procedia, ISSN 1876-6102, Vol. 61, s. 2805-2808Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    To combine the abilities of lipids extraction and CO2 capture by algae + IL system, chlorella hydrolysis integrating CO2 removal by ILs ([bmim][BF4], [bmim]Cl and [amim]Cl) to extract lipids energy-efficiently was demonstrated in this study. The addition of CO2 to [bmim][BF4] can increase the lipids yield from 14.2% to 15.6%. The value of net energy gain increased from 10.4 to 35.9 with the CO2 addition to [bmim][BF4] because of the compensated CO2 capture energy in the algae extraction process.

  • 121.
    Huang, L.
    et al.
    National Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum Engineering/Beijing Key Laboratory of Urban Oil and Gas.
    Liao, Q.
    National Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum Engineering/Beijing Key Laboratory of Urban Oil and Gas.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Liang, Y.
    National Engineering Laboratory for Pipeline Safety/MOE Key Laboratory of Petroleum Engineering/Beijing Key Laboratory of Urban Oil and Gas.
    Zhang, H.
    Center for Spatial Information Science, The University of Tokyo, Japan.
    Carbon footprint of oil products pipeline transportation2021Inngår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 783, artikkel-id 146906Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    As climate issues gradually attract public attention worldwide, the operation and construction of oil product pipelines have been attached with new energy-saving and emission-reduction targets. Though previous studies concerning Life Cycle Assessment of oil and gas pipelines have estimated the carbon footprint to some extent, there is a lack of researches that take the characteristics of oil products pipelines into consideration. Oil products pipelines undertake the task of delivering various products to downstream demand locations, which differs greatly from other pipeline transportation systems as back-to-back sequential delivery is adopted. In this paper, a detailed Life Cycle Assessment model is established to analyze carbon emissions of oil products pipeline system from construction to disposal as well as its impact on soil environment. Data from practical pipes is adopted as the case study to reflect emissions produced in different stages, and the amount of total and unified emissions of different pipes provided through the proposed model is within the range of 2.78 to 4.70 tCO2e/t·km. Then, sensitivity analysis is carried out to identify the driving factors of emissions. According to the calculation results, pipe length, diameter and throughput turn out to be the dominating factors, and an empirical formula is derived for future planned pipes. Relevant recommendations are put forward based on the results to help reduce emissions from oil product pipe transportation. 

  • 122.
    Huang, X.
    et al.
    Institute of Building Environment and Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Chin.
    Li, F.
    Institute of Building Environment and Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Chin.
    Liu, Z.
    Institute of Building Environment and Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Chin.
    Gao, X.
    Institute of Building Environment and Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Chin.
    Yang, X.
    Institute of Building Environment and Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Chin.
    Yan, Jinyue
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Department of Building Environment and Energy Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong.
    Design and optimization of a novel phase change photovoltaic thermal utilization structure for building envelope2023Inngår i: Renewable energy, ISSN 0960-1481, E-ISSN 1879-0682, Vol. 218, artikkel-id 119269Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The building envelope is of great significance for building thermal comfort, and photovoltaic heat (PV/T) can be effectively utilized through phase change heat storage technology to reduce heating energy consumption. In this paper, a phase change heat storage structure with subzone rotation is proposed for the building envelope. A numerical model of a triplex-tube LHTES unit is established by using the enthalpy-porosity method and verified by experimental data. The study employs the Taguchi method to select rotation speed in different regions and fin/tube wall material as variables. The effects of different variables on heat release rate and solidification time are investigated, and the interaction of each parameter on solidification performance is analyzed through signal-to-noise ratio. The findings indicate that when the inner and outer tube speeds are 0.3 rpm and 0.5 rpm, respectively, compared to the initial model where both inner and outer tube speeds are 0.1 rpm, the average temperature response rate and the average heat release rate are increased by 51.47% and 61.04%, respectively. Meanwhile, the solidification time is shortened by 40.49%. However, the release of the total heat is reduced by 0.66%. The study concludes that increasing rotation speed or solidification consistency of PCM in different areas is of great value in enhancing overall solidification performance. Finally, the specific effect of increasing regional rotation speed on the solidification process is studied through temperature/flow rate monitoring in the unit.

  • 123.
    Huang, X.
    et al.
    Institute of the Building Environment & Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
    Li, F.
    Institute of the Building Environment & Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
    Lu, L.
    Institute of the Building Environment & Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
    Li, Z.
    Institute of the Building Environment & Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
    Yang, X.
    Institute of the Building Environment & Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
    Yan, Jinyue
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Renewable Energy Research Group (RERG), Department of Building Environment and Energy Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong.
    Depth optimization of solidification properties of a latent heat energy storage unit under constant rotation mechanism2023Inngår i: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 290, artikkel-id 113099Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Latent heat storage technology plays an important role in the effective utilization of clean energy such as solar energy in building heating, but the low thermal conductivity of heat storage medium (phase change material) affects its large-scale application. As a new heat storage enhancement technology, rotation mechanism has a good application prospect. In this paper, the solidification performance of a triplex-tube latent heat thermal energy storage unit at constant speed (0.5 rpm) is studied numerically. Different optimization design methods (Taguchi method and response surface method) are used for deep analysis. The influences of fin position, number, and material on solidification properties are explored by the Taguchi method. Then, the unit structure (fin angle, fin length, and fin width) is optimized by the response surface method. Compared with the original structure, the average heat release rate of 8 copper fins with all outer tubes is increased by 108.93%, and the solidification time is reduced by 52.06%. The optimal structure can further shorten the solidification time by 29.14% and increase the average heat release rate by 40.5%. Additionally, the study of wall temperature shows that increasing temperature difference makes solidification speed faster and heat energy release faster. This effect effectively eliminates the adverse effects of slow solidification during the later stages of the process on the system. 

  • 124.
    Huang, X.
    et al.
    Institute of the Building Environment & Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China.
    Zhou, R.
    State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China.
    Luo, X.
    Institute of the Building Environment & Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China.
    Yang, X.
    Institute of the Building Environment & Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China.
    Cheng, J.
    Institute of the Building Environment & Sustainability Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China.
    Yan, Jinyue
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Experimental research and multi-physical modeling progress of Zinc-Nickel single flow battery: A critical review2023Inngår i: Advances in Applied Energy, ISSN 2666-7924, Vol. 12, artikkel-id 100154Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Electrochemical energy storage technologies hold great significance in the progression of renewable energy. Within this specific field, flow batteries have emerged as a crucial component, with Zinc–Nickel single flow batteries attracting attention due to their cost-effectiveness, safety, stability, and high energy density. This comprehensive review aims to thoroughly evaluate the key concerns and obstacles associated with this type of battery, including polarization loss, hydrogen evolution reaction, and dendrite growth, among others. Additionally, the study highlights ongoing research endeavors focused on addressing these concerns, such as optimizing battery operating conditions and developing new electrodes. Furthermore, recent advancements in experimental processes and multi-scale numerical simulations of Zinc–Nickel single flow batteries, facilitated by the visual literature analysis software VOSviewer, are also explored. The primary objective of this review is to acquire a comprehensive understanding of the electrochemical reaction and internal mass transfer mechanism of Zinc–Nickel single flow batteries, while also anticipating future research directions and prospects.

  • 125.
    Hui, H.
    et al.
    College of Electrical Engineering, Zhejiang University, Hangzhou, 310027, China.
    Bao, M.
    College of Electrical Engineering, Zhejiang University, Hangzhou, 310027, China.
    Ding, Y.
    College of Electrical Engineering, Zhejiang University, Hangzhou, 310027, China.
    Yan, Jinyue
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Department of Building Environment and Energy Engineering, The Hong Kong Polytechnic University, 999077, Hong Kong.
    Song, Y.
    State Key Laboratory of Internet of Things for Smart City, University of Macau, Macau, 999078, China.
    Probabilistic integrated flexible regions of multi-energy industrial parks: Conceptualization and characterization2023Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 349, artikkel-id 121521Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Multi-energy industrial parks, composed of the district energy supply system and terminal industrial loads, are dominant energy consumers with over 50% occupation of total energy consumption. Considering the energy conversion in the district energy supply system and adjustment of production subtasks in terminal industrial loads, the industrial parks could provide considerable flexibility for utility multi-energy systems to deal with contingencies. However, industrial parks may have multiple uncertainties originating from the production subtasks' variability, distributed renewable energy's fluctuation, and random failures of equipment. These uncertainties could make the flexibility assessment of industrial parks unreliable, which may further exacerbate utility system risks. To address the problem, this paper innovatively proposes the concept of probabilistic integrated flexible regions and corresponding characterization approaches, which can effectively describe the credible multi-energy adjustment ability of industrial parks. First, the energy-material flows in the industrial park are modeled considering multiple uncertainties while subject to constraints such as operating limits of equipment, energy and material balancing, and production targets. Then, the modeling and calculation methods of probabilistic integrated flexible regions are given. These regions are labeled with certain probability requirements and visualized in the input multi-energy space. Using a real-world test system that produces air conditioning equipment in China, the results show that the proposed model can effectively reflect the probability characteristics of the integrated flexibility under multiple uncertainties. For this test system, the area of a highly credible integrated flexibility, represented by the probabilistic integrated flexible region with 99% probability, is about half of that obtained by the deterministic model. That is, half of the integrated flexibility evaluated by the deterministic method in the test system may not be practically utilized considering the impacts of uncertainties. Therefore, the proposed method could provide a credible and comprehensive evaluation of the multi-energy industrial park's flexibility considering multiple uncertainties. 

  • 126.
    Hui, Hongxun
    et al.
    Zhejiang Univ, Peoples R China..
    Ding, Yi
    Zhejiang Univ, Peoples R China..
    Shi, Qingxin
    Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA..
    Li, Fangxing
    Univ Tennessee, USA..
    Song, Yonghua
    Zhejiang Univ, Peoples R China.;Univ Macau, Peoples R China..
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. KTH Royal Inst Technol, Stockholm, Sweden..
    5G network-based Internet of Things for demand response in smart grid: A survey on application potential2020Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 257, artikkel-id UNSP 113972Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    Demand response (DR) has been widely regarded as an effective way to provide regulation services for smart grids by controlling demand-side resources via new and improved information and communication technologies. Emerging 5G networks and 5G-based Internet of Things (IoTs) can doubtless provide better infrastructure for DR, owing to 5G's advantages of fast transfer speed, high reliability, robust security, low power consumption, and massive number of connections. However, nearly none of the existing studies have applied 5G technology to DR, which will be the subject surveyed in this paper. First, the concept of DR and recent practical advances are investigated, especially the application of communication technologies to DR. Then, a comprehensive review of the cyber security, consumer privacy, and reliability of DR is presented. These topics received little attention in the past, but they will be among the most crucial factors in the future. In addition, the essential features and typical application scenarios of 5G communication are investigated. On this basis, the advantages, methods, recent advances, and implementation planning of 5G on DR are studied. Finally, the future work that must urgently be conducted in order to achieve the application of 5G to DR is discussed. This paper's application survey of 5G on DR is carried out before 5G technology enters the large-scale commercial stage, so as to provide references and guidelines for developing future 5G networks in the smart grid paradigm.

  • 127.
    Huo, Yanda
    et al.
    Tianjin Univ, Key Lab Smart Grid, Minist Educ, Tianjin, Peoples R China..
    Li, Peng
    Tianjin Univ, Key Lab Smart Grid, Minist Educ, Tianjin, Peoples R China..
    Ji, Haoran
    Tianjin Univ, Key Lab Smart Grid, Minist Educ, Tianjin, Peoples R China..
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Song, Guanyu
    Tianjin Univ, Key Lab Smart Grid, Minist Educ, Tianjin, Peoples R China..
    Wu, Jianzhong
    Cardiff Univ, Sch Engn, Inst Energy, Cardiff, Wales..
    Wang, Chengshan
    Tianjin Univ, Key Lab Smart Grid, Minist Educ, Tianjin, Peoples R China..
    Data-Driven Adaptive Operation of Soft Open Points in Active Distribution Networks2021Inngår i: IEEE Transactions on Industrial Informatics, ISSN 1551-3203, E-ISSN 1941-0050, Vol. 17, nr 12, s. 8230-8242Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The integration of soft open point (SOP) effectively improves the flexibility of active distribution networks (ADNs). However, in practical operation, accurate network parameters are difficult to obtain and the operation state changes rapidly with distributed generators (DGs). With the development of information technologies, massive operation data can be acquired in ADNs. How to utilize multisource data has become the key to realize the intelligent operation of ADNs. This article proposes a data-driven operation strategy of SOP based on model-free adaptive control (MFAC). First, considering the inaccurate parameters and frequent change of operation states, a data-driven framework is formulated for the real-time operation of SOP. Then, the operation strategies of multiple SOPs are further improved with interarea coordination. The results of case studies show that driven by the measurement data, the potential benefits of SOPs are explored to adaptively respond to system state changes and improve the operational performance of ADNs.

  • 128.
    Huo, Yanda
    et al.
    School of Electrical Engineering & Automation, Tianjin University, Tianjin, China.
    Li, Peng
    School of Electrical and Information Engineering, Tianjin University, Tianjin, Tianjin, China.
    Ji, Haoran
    School of Electrical Engineering&Automation, Tianjin University, Tianjin, China.
    Yu, Hao
    School of Electrical and Information Engineering, Tianjin University, Tianjin, China.
    Yan, Jinyue
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Wu, Jianzhong
    School of Engineering, Cardiff University, Cardiff, United Kingdom of Great Britain and Northern Ireland.
    Wang, Chengshan
    School of eleltrical engineering and automation, Tianjin University, Tianjin, China.
    Data-driven Coordinated Voltage Control Method of Distribution Networks with High DG Penetration2023Inngår i: IEEE Transactions on Power Systems, ISSN 0885-8950, E-ISSN 1558-0679, Vol. 38, nr 2, s. 1543-1557Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The highly penetrated distributed generators (DGs) aggravate the voltage violations in active distribution networks (ADNs). The coordination of various regulation devices such as on-load tap changers (OLTCs) and DG inverters can effectively address the voltage issues. Considering the problems of inaccurate network parameters and rapid DG fluctuation in practical operation, multi-source data can be utilized to establish the data-driven control model. In this paper, a data-driven coordinated voltage control method with the coordination of OLTC and DG inverters on multiple time-scales is proposed without relying on the accurate physical model. First, based on the multi-source data, a data-driven voltage control model is established. Multiple regulation devices such as OLTC and DG are coordinated on multiple time-scales to maintain voltages within the desired range. Then, a critical measurement selection method is proposed to guarantee the voltage control performance under the partial measurements in practical ADNs. Finally, the proposed method is validated on the modified IEEE 33-node and IEEE 123-node test cases. Case studies illustrate the effectiveness of the proposed method, as well as the adaptability to DG uncertainties.

  • 129.
    Ji, H.
    et al.
    Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, 300072, China.
    Chen, S.
    Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, 300072, China.
    Yu, H.
    Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, 300072, China.
    Li, P.
    Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, 300072, China.
    Yan, Jinyue
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Song, J.
    Global Energy Interconnection Research Institute of State Grid, Beijing, 100000, China.
    Wang, C.
    Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, 300072, China.
    Robust operation for minimizing power consumption of data centers with flexible substation integration2022Inngår i: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 248, artikkel-id 123599Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The rapid development of digital economy has led to a dramatic increasement of internet data centers (IDCs), which consume a large amount of electricity. The diverse data-processing demands, high power consumption and workload uncertainty put forward a high requirement for the economical and secure operation of IDCs. As information technology (IT) devices are driven by direct current (DC), flexible substation (FS) has been gradually utilized to provide DC power for IDCs. This paper proposes robust operation strategies for minimizing IDC power consumption with FS integration. First, the linearized IDC power consumption model based on the technology of dynamic voltage and frequency scaling (DVFS) is proposed to describe the operating state of IT devices. Then, considering the FS-based coordinated operation of IDC, photovoltaic (PV) station and energy storage system (ESS), the deterministic power consumption minimization model of IDCs is established. Considering the workload uncertainty, the operation strategies based on distributionally robust optimization (DRO) for IDCs are further proposed. Finally, the effectiveness of proposed method is validated on a modified practical network with IDCs integrated. Results show that through the dispatch of workload and power flow regulation of FS, the power consumption and dropping workload of IDCs are effectively reduced. 

  • 130.
    Ji, Haoran
    et al.
    School of Electrical and Information Engineering, Tianjin University, 12605 Tianjin, Tianjin, China.
    Jian, Jie
    School of Electrical and Information Engineering, Tianjin University, 12605 Tianjin, Tianjin, China.
    Yu, Hao
    School of Electrical and Information Engineering, Tianjin University, 12605 Tianjin, Tianjin, China.
    Ji, Jie
    School of Electrical and Information Engineering, Tianjin University, 12605 Tianjin, Tianjin, China.
    Wei, Mingjiang
    School of Electrical and Information Engineering, Tianjin University, 12605 Tianjin, Tianjin, China.
    Zhang, Xinmin
    State Grid Tianjin Electric Power Company, 561720 Tianjin, China.
    Li, Peng
    School of Electrical and Information Engineering, Tianjin University, 12605 Tianjin, Tianjin, China.
    Yan, Jinyue
    Mälardalens universitet, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Wang, Chengshan
    Tianjin University, 12605 Tianjin, Tianjin, China.
    Peer-to-Peer Electricity Trading of Interconnected Flexible Distribution Networks Based on Distributed Ledger2022Inngår i: IEEE Transactions on Industrial Informatics, ISSN 1551-3203, E-ISSN 1941-0050, Vol. 18, nr 9, s. 5949-5960Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The condition of power imbalance in flexible distribution networks (FDNs) is deteriorated due to the high penetration of distributed generators (DGs). Through peer-to-peer (P2P) electricity trading, multiple regions interconnected by soft open points (SOPs) can flexibly exchange power to alleviate power imbalance. As the physical foundation of P2P transactions, SOP regulation guarantees accurate instruction execution. Besides, smart contracts based on distributed ledger technology (DLT) facilitate highly credible P2P transactions. Oriented for the economic operation of interconnected FDNs, this paper proposes a DLT-based P2P electricity trading method based on intelligent SOP regulation. First, a smart contract is designed for P2P transactions of FDNs, in which trading solutions are automatically settled with a modified highest combined offer (HCO) principle. Then, a trading platform is built for the P2P electricity trading of interconnected FDNs. Finally, the effectiveness of the proposed method is verified on a practical FDN with four-terminal SOPs in Tianjin.

  • 131.
    Ji, X.
    et al.
    Royal Institute of Technology, Sweden.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling. Royal Institute of Technology, Sweden.
    Thermodynamic properties for humid gases from 298 to 573 K and up to 200 bar2006Inngår i: Applied Thermal Engineering, ISSN 1359-4311, E-ISSN 1873-5606, Vol. 26, nr 2-3, s. 251-258Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    For the needs of process design, the model proposed in our previous papers was extended to calculate the thermodynamic properties of humidity, heat capacity, molar volume, partial pressure of water vapour, enthalpy and entropy for humid gases (nitrogen, oxygen, air or a nitrogen-oxygen mixture). The comparison with other models from 300 to 473 K and I to 100 bar shows that the results calculated with different models are consistent within 50 bar and 400 K; out of this range, there is some difference. Meanwhile, mole ratios of nitrogen to oxygen in the saturated humid air were calculated from 323 to 523 K and 50 to 250 bar. It is found that the mole ratio of nitrogen to oxygen keeps almost constant, and the effect of the slight changes in the ratio of nitrogen to oxygen on the humidity, enthalpy and entropy of humid air is small enough to be neglected. Moreover, the enthalpy of dry air was predicted, and the comparison with other models again proved the reasonable assumptions and prediction capability of the new model. (c) 2005 Elsevier Ltd. All rights reserved.

  • 132.
    Jian, J.
    et al.
    Tianjin University, Tianjin, 300072, China.
    Li, P.
    Tianjin University, Tianjin, 300072, China.
    Yu, H.
    Tianjin University, Tianjin, 300072, China.
    Ji, H.
    Tianjin University, Tianjin, 300072, China.
    Ji, J.
    Tianjin University, Tianjin, 300072, China.
    Song, G.
    Tianjin University, Tianjin, 300072, China.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Wu, J.
    Cardiff University, Cardiff, CF24 3AA, United Kingdom.
    Wang, C.
    Tianjin University, Tianjin, 300072, China.
    Multi-stage supply restoration of active distribution networks with SOP integration2022Inngår i: Sustainable Energy, Grids and Networks, E-ISSN 2352-4677, Vol. 29, artikkel-id 100562Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Supply restoration from outages is essential for improving the reliability of active distribution networks (ADNs) after fault isolation. Soft open point (SOP) can adjust the power flow among feeders and provide voltage support for power outage areas. Considering the sequential coordination of switching operation and SOP control mode selection, a multi-stage supply restoration method with SOPs is proposed for ADNs. First, the sequential energization is formulated, in which the impact of SOP control mode on restoration sequence is analyzed. By providing voltage support, the coordination of SOPs will rapidly energize the outage area and improve the voltage profile. Then, a multi-stage restoration model with SOPs is proposed, in which reconfiguration of switches and control mode selection of SOPs are coordinated in sequence to maximize the load recovery level of ADNs. Through the switching action-time mapping, secure operation is ensured during the entire supply restoration process. Finally, the effectiveness of the proposed method is validated on a modified IEEE 33-node distribution system and practical distribution networks with four-terminal SOP. Results show that the proposed method can fully exploit the potential benefits of SOPs and effectively enhance the load recovery level of ADNs.

  • 133.
    Jiang, M.
    et al.
    Key Laboratory of Pressure Systems and Safety (MOE), School of Mechanical Engineering, East China University of Science and Technology, Shanghai 200237, China.
    Lv, Y.
    Applied Energy Innovation Institute, Ningbo 315201, China.
    Wang, T.
    China Energy Group, Beijing 100011, China.
    Sun, Z.
    State Key Laboratory of Clean and Efficient Coal-fired Power Generation and Pollution Control, Guodian Science and Technology Research Institute, Nanjing 210023, China.
    Liu, J.
    State Key Laboratory of Clean and Efficient Coal-fired Power Generation and Pollution Control, Guodian Science and Technology Research Institute, Nanjing 210023, China.
    Yu, X.
    Key Laboratory of Pressure Systems and Safety (MOE), School of Mechanical Engineering, East China University of Science and Technology, Shanghai 200237, China.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. School of Business Society and Technology, Mälardalen University, Västerås, Sweden; School of Chemical Science and Engineering, Royal Institute of Technology, Stockholm, Sweden.
    Performance analysis of a photovoltaics aided coal-fired power plant2019Inngår i: Energy Procedia, Elsevier Ltd , 2019, s. 1348-1353Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this article, integration of photovoltaics (PV) into a coal-fired power plant was proposed. The performance including economic analysis and environmental impact was conducted by a case study in the northwest area of China. The results show that the PV system can replace part of auxiliary power consumption using renewable electricity to reduce internal power consumption and the emissions. Due to the feature of the integration into a power plant, the curtailment of solar PV electricity does not occur compared to stand-alone PV system. The investment cost, operation and maintenance (O&M) expenditure were feasible compared with other PV power generation plants. 

  • 134.
    Jiang, M.
    et al.
    Key Laboratory of Pressure Systems and Safety (MOE), School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
    Qi, Lingfei
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Yu, Z.
    School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China.
    Wu, D.
    School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
    Si, P.
    China Southwest Architecture Design and Research Institute Corp. Ltd., Chengdu 610042, China.
    Li, P.
    Center for Spatial Information Science, The University of Tokyo, Kashiwa-shi 277-8568, Japan.
    Wei, W.
    School of International and Public Affairs, Shanghai Jiao Tong University, Shanghai 200030, China.
    Yu, X.
    Key Laboratory of Pressure Systems and Safety (MOE), School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    National level assessment of using existing airport infrastructures for photovoltaic deployment2021Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 298, artikkel-id 117195Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The airport is one of the most fundamental infrastructures in our society, its terminal buildings and parking lots are ideal locations for photovoltaic (PV) installation. The future trend of the electrification of the aviation and automobile industries will increase the electricity demand at airports calls for the integration of PV systems with airport infrastructure. Understanding the benefits of airport PV systems is crucial for the stakeholders including investors, project developers and policymakers to promote PV sector development. Thus, evaluation of the PV potential and relevant economic performance of airports is essential. Combined with the geographic information system (GIS), the PV potential of the civil airports in China is investigated. The results show that potential PV capacity of China's 239 civil airports reaches up to 2.50 GW. The annual electricity demand of the aviation industry in 8 provinces can be self-satisfied via airport PV generation. Detailed economic analysis shows that all airport PV systems are profitable through appropriate investment and operation strategies. © 2021

  • 135.
    Jiang, Mingkun
    et al.
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. East China University of Science and Technology, Shanghai, China.
    Li, J.
    Shandong University, Weihai, China.
    Wei, W.
    Shanghai Jiao Tong University, Shanghai, China.
    Miao, J.
    University of Shanghai for Science and Technology, Shanghai, China.
    Zhang, P.
    Shandong University, Weihai, China.
    Qian, H.
    Fudan University, Shanghai, China.
    Liu, J.
    State Key Laboratory of Clean and Efficient Coal-fired Power Generation and Pollution Control, Nanjing, China.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Using Existing Infrastructure to Realize Low-Cost and Flexible Photovoltaic Power Generation in Areas with High-Power Demand in China2020Inngår i: iScience, E-ISSN 2589-0042, Vol. 23, nr 12, artikkel-id 101867Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Energy Policy; Energy Resources; Energy Systems; Energy Management © 2020 This study develops a new concept involving using the existing infrastructure for photovoltaic (PV) generation to reduce the costs associated with increased land use and to avoid curtailment due to the mismatch between power supply and demand. We establish a method to estimate the technological potential and economic performance of the PV systems deployed in coal-fired power plants in China. The potential capacity of the examined 1,082 units in China reaches 4 GWe, which is equivalent to 32% of China's newly installed distributed PV capacity in 2019. A total of 87% of PV systems achieve plant-side grid parity compared with desulfurized coal benchmark electricity prices. To the best of our knowledge, this is the first study that investigates the use of rooftops and coal storage sheds in power plants to facilitate low-cost, flexible PV power generation, thus opening a new channel for future PV generation development.

  • 136.
    Jiang, Xi
    et al.
    Univ Lancaster, Dept Engn, Chair Energy Use & Transport, Lancaster LA1 4YR, England..
    Kraft, Markus
    Univ Cambridge, Cambridge CB2 1TN, England..
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Royal Inst Technol, Stockholm, Sweden.
    Selected papers from the Twelfth International Conference on Combustion and Energy Utilisation (12th ICCEU) Preface2015Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 156, s. 747-748Artikkel i tidsskrift (Annet vitenskapelig)
  • 137. Jin, H.
    et al.
    Lin, G.
    Han, W.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    A Novel Coal-Based Polygeneration System of Power and Liquid Fuel with CO2 Capture2007Konferansepaper (Fagfellevurdert)
  • 138.
    Jin, Hongguang
    et al.
    nstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, China.
    Gao, L.
    nstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China.
    Han, W.
    nstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    A new approach integrating CO2 capture into a coal-based polygeneration system of power and liquid fuel2007Inngår i: Proceedings of the ASME Turbo Expo, 2007, s. 311-321Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Reducing the energy penalty for CO2 Capture and Storage (CCS) is a challenge. Most of previous studies for CCS have been focused on power generation system. When CCS is included in the polygeneration system, a new methodology that jointly considering CCS and liquid fuel production should be introduced. In this paper, we proposed a new approach integrating CCS into a coal-based polygeneration system for power generation and methanol production: the syngas produced from the coal gasifier, without adjusting the composition (CO/H2 ratio) by shift reaction, is used to synthesis methanol directly. Moreover, the partial-recycle scheme, in which a part of unreacted gas is recycled back to the synthesis reactor, is adopted in the synthesis unit. Another part of unreacted gas is treated to remove CO2, and then is used as clean fuel for the power generation subsystem. Compared to the conventional CCS approaches adopted by the power generation systems, the new approach is mainly characterized by two features: firstly, the combination of the removal of the composition adjustment process and a partial-recycle scheme can not only reduces the energy consumption for methanol production, but also obtains a high concentration of COx (CO and CO2) in the unreacted gas; secondly, the CO2 is captured from the unreacted gas, instead of from syngas generated by the gasifier. Due to increment of CO x concentration, the new approach can reduce the energy consumption for CO2 capture compared to conventional pre-combustion CO 2 capture. In the conventional coal based IGCC systems, the thermal efficiency is around 34-36% for a case with CO2 capture and around 44% for a case without CO2 capture. However, with the innovative approach integrating CCS, the polygeneration system in this paper can achieve the equivalent thermal efficiency as high as 47% when 72% of CO2 is recovered, which provides a significant improvement for CO2 capture. It's clearly that the new approach can increase the thermal efficiency, instead of incurring an energy penalty for CO2 capture. The results achieved in this study have provided a new methodology integrating CO2 capture into the polygeneration system, which reveals the different characteristics compared to power-generation system that has been overlooked by the previous studies.

  • 139.
    Jin, Ming
    et al.
    Univ Calif Berkeley, Dept Ind Engn & Operat Res, Berkeley, CA 94720 USA..
    Jain, Rishee
    Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA..
    Spanos, Costas
    Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA..
    Jia, Qingshan
    Tsinghua Univ, Dept Automat, Beijing, Peoples R China..
    Norford, Leslie K.
    MIT, Dept Architecture, Cambridge, MA 02139 USA..
    Kjaergaard, Mikkel
    Univ Southern Denmark, Maersk McKinney Moller Inst, Odense, Denmark..
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi.
    Energy-cyber-physical systems2019Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 256, artikkel-id UNSP 113939Artikkel i tidsskrift (Annet vitenskapelig)
  • 140.
    Lam, H. L.
    et al.
    Hon Loong Lam Centre of Excellence for Green Technologies, University of Nottingham Malaysia Campus, Malaysia.
    Varbanov, P. S.
    University of Pannonia, Veszprém, Hungary.
    Klemeš, J. J.
    University of Pannonia, Veszprém, Hungary.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Royal Institute of Technology (KTH), Stockholm, Sweden.
    Green Applied Energy for sustainable development2016Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 161, s. 601-604Artikkel i tidsskrift (Annet vitenskapelig)
    Abstract [en]

    This special issue of Applied Energy contains articles developed from initial ideas related to the 17th Conference Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction (PRES 2014) held in Prague, Czech Republic, during 23-27 August 2014. The conference has been organised jointly with CHISA 2014. Both events have benefitted from the shared pool of participants as well as the expanded opportunities for exchanging ideas. From all contributions presented at the conference, high-quality ones suitable for Applied Energy, have been invited. Overall, 37 extended manuscripts have been invited as candidate articles. Of those, after a thorough review procedure, 11 articles have been selected to be published. The topics attained in the focus of this Special Issue include Process Integration and Energy Management, CO2 capture, and Green Energy Applications. 

  • 141.
    Lee, Duu-Jong
    et al.
    Natl Taiwan Univ Sci & Technol, Taiwan.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Royal Inst Technol, Stockholm, Sweden.
    Chou, Siaw-Kiang
    Natl Univ Singapore, Singapore.
    Desideri, Umberto
    Univ Perugia, Perugia, Italy.
    Clean, efficient, affordable and reliable energy for a sustainable future Preface2015Inngår i: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. 102, s. 1-3Artikkel i tidsskrift (Annet vitenskapelig)
  • 142.
    Lee, M.
    et al.
    National Taiwan University, Taipei, Taiwan.
    Keller, A. A.
    University of California, Santa Barbara, CA, United States.
    Chiang, P. -C
    National Taiwan University, Taipei, Taiwan.
    Den, W.
    Tunghai University, Taichung, Taiwan.
    Wang, H.
    Tongji University, Shanghai, China.
    Hou, C. -H
    National Taiwan University, Taipei, Taiwan.
    Wu, J.
    Tongji University, Shanghai, China.
    Wang, X.
    Tongji University, Shanghai, China.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Tongji University, Shanghai, China; Royal Institute of Technology (KTH), Sweden.
    Water-energy nexus for urban water systems: A comparative review on energy intensity and environmental impacts in relation to global water risks2017Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 205, s. 589-601Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The importance of the interdependence between water and energy, also known as the water-energy nexus, is well recognized. The water-energy nexus is typically characterized in resource use efficiency terms such as energy intensity. This study aims to explore the quantitative results of the nexus in terms of energy intensity and environmental impacts (mainly greenhouse gas emissions) on existing water systems within urban water cycles. We also characterized the influence of water risks on the water-energy nexus, including baseline water stress (a water quantity indicator) and return flow ratio (a water quality indicator). For the 20 regions and 4 countries surveyed (including regions with low to extremely high water risks that are geographically located in Africa, Australia, Asia, Europe, and North America), their energy intensities were positively related to the water risks. Regions with higher water risks were observed to have relatively higher energy and GHG intensities associated with their water supply systems. This mainly reflected the major influence of source water accessibility on the nexus, particularly for regions requiring energy-intensive imported or groundwater supplies, or desalination. Regions that use tertiary treatment (for water reclamation or environmental protection) for their wastewater treatment systems also had relatively higher energy and GHG emission intensities, but the intensities seemed to be independent from the water risks. On-site energy recovery (e.g., biogas or waste heat) in the wastewater treatment systems offered a great opportunity for reducing overall energy demand and its associated environmental impacts. Future policy making for the water and energy sectors should carefully consider the water-energy nexus at the regional or local level to achieve maximum environmental and economic benefits. The results from this study can provide a better understanding of the water-energy nexus and informative recommendations for future policy directions for the effective management of water and energy.

  • 143. Leung, Dennis Y. C.
    et al.
    Yang, Hongxing
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Editorial for Special Issue of the First International Conference on Applied Energy, ICAE'09, Hong Kong, January 5-7, 2009 at the journal, Applied Energy2010Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 87, nr 9, s. 2861-2861Artikkel i tidsskrift (Fagfellevurdert)
  • 144.
    Leung, Dennis Y. C.
    et al.
    Univ Hong Kong.
    Yang, Hongxing
    Hong Kong Polytech Univ.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Novel studies on hydrogen, fuel cell and battery energy systems2011Inngår i: International Journal of Energy Research, ISSN 0363-907X, E-ISSN 1099-114X, Vol. 35, nr 1, s. 1-1Artikkel i tidsskrift (Annet vitenskapelig)
  • 145.
    Li, C.
    et al.
    Hunan Academy of Forestry, Changsha, China.
    Liu, D.
    Tsinghua University, Beijing, China.
    Ramaswamy, S.
    University of Minnesota, United States.
    Yan, Jinyue
    Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. Royal Institute of Technology (KTH), Stockholm, Sweden.
    Biomass energy and products: Advanced technologies and applications2015Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 157, s. 489-490Artikkel i tidsskrift (Annet vitenskapelig)
  • 146.
    Li, H.
    et al.
    SINTEF Energy.
    Jakobsen, J. P.
    SINTEF Energy.
    Wilhelmsen, Ø.
    SINTEF Energy.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Responses to 'Comments on PVTxy properties of CO 2 mixtures relevant for CO 2 capture, transport and storage: Review of available experimental data and theoretical models'2012Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 93, s. 753-754Artikkel i tidsskrift (Annet vitenskapelig)
  • 147.
    Li, H.
    et al.
    Royal Institute of Technology, Stockholm, Sweden .
    Ji, X.
    Royal Institute of Technology, Stockholm, Sweden .
    Yan, Jinyue
    Mälardalens högskola, Institutionen för samhällsteknik.
    A new modification on RK EOS for gaseous carbon dioxide2005Inngår i: ECOS 2005 - Proceedings of the 18th International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, 2005, s. 733-739Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Mitigation technologies including CO2 capture and storage in various energy conversion systems have been intensively developed in recent years. However, it is of importance to develop an equation of state (EOS) with simple structure and reasonable accuracy for engineering application for both pure CO2 and CO2 mixtures. In this paper, Redlich-Kwong equation of state was modified for gaseous CO2. In the new modification, parameter 'a' was correlated as a function of temperature and pressure from reliable experimental data in the range: 220K to 750K and 0.1MPa to 400MPa. To verify the accuracy of the new parameters, densities were calculated and compared with experimental data. The average error is 1.68 %. Other thermodynamic properties of CO2, such as enthalpy and heat capacities, were also calculated; results fit experimental data well except critical region. This method can be further developed for CO2 mixture systems.

  • 148.
    Li, H.
    et al.
    Royal Institute of Technology, Sweden.
    Ji, X.
    Royal Institute of Technology, Sweden.
    Yan, Jinyue
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling. Royal Institute of Technology, Sweden.
    A new modification on RK EOS for gaseous CO2 and gaseous mixtures of CO2 and H2O2006Inngår i: International Journal of Energy Research, ISSN 0363-907X, E-ISSN 1099-114X, Vol. 30, nr 3, s. 135-148Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    To develop an equation of state with simple structure and reasonable accuracy for engineering application, Redlich-Kwong equation of state was modified for gaseous CO2 and CO2-H2O mixtures. In the new modification, parameter a of gaseous CO2 was regressed as a function of temperature and pressure from recent reliable experimental data in the range: 220-750 K and 0.1-400 MPa. Moreover, a new mixing rule was proposed for gaseous CO2-H2O mixtures. To verify the accuracy of the new modification, densities were calculated and compared with experimental data. The average error is 1.68% for gaseous CO2 and 0.93% for gaseous mixtures of CO2 and H2O. Other thermodynamic properties, such as enthalpy and heat capacities of CO2 and excess enthalpy of gaseous CO2-H2O mixtures, were also calculated; results fit experimental data well, except for the critical region.

  • 149.
    Li, H.
    et al.
    Royal Institute of Technology, Stockholm, Sweden.
    Ji, X.
    Royal Institute of Technology, Stockholm, Sweden.
    Yan, Jinyue
    Mälardalens högskola, Institutionen för samhällsteknik.
    Quantitative evaluations on available models for calculating thermodynamic properties of humid air2005Inngår i: ECOS 2005 - Proceedings of the 18th International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, 2005, s. 889-896Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Engineering calculation of the thermodynamic properties for cycle simulation and design requires simple but reliable models. This has been proved to be of importance for the research and development on humidified gas turbines, such as humid air turbine (HAT) cycles and compressed air energy storage (CAES). This paper has made a comprehensive review and comparison among different models for calculating thermodynamic properties of the humid air mixtures, including ideal gas model (IG), ideal mixing model (IM), and real gas model (RG); and based on temperature and pressure range, gave quantitative evaluations on saturated water vapor composition and enthalpy. Based on performance conditions of an HAT cycle, several suggestions were given for the use of the today's available models for engineering cycle calculations, which can provide accurate results for cycle performance analysis and design while keeping the methods straightforward.

  • 150.
    Li, H.
    et al.
    Royal Institute of Technology.
    Yan, J.
    Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
    Anheden, M
    Vattenfall Research and Development AB.
    Impurity impacts on the purification process in oxy-fuel combustion based CO2 capture and storage system2009Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 86, nr 2, s. 202-213Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Basedon the requirements of CO2 transportation and storage, non-condensable gases, such as O2, N2 and Ar should be removed from the CO2-stream captured from an oxy-fuel combustion process. For a purification process, impurities have great impacts on the design, operation and optimization through their impacts on the thermodynamic properties of CO2-streams. Study results show that the increments of impurities will make the energy consumption of purification increase; and make CO2 purity of separation product and CO2 recovery rate decrease. In addition, under the same operating conditions, energy consumptions have different sensitivities to the variation of the impurity mole fraction of feed fluids. The isothermal compression work is more sensitive to the variation of SO2; while the isentropic compression work is more sensitive to the variation of Ar. In the flash system, the energy consumption of condensation in is more sensitive to the variation of Ar; but in the distillation system, the energy consumption of condensation is more sensitive to the variation of SO2, and CO2 purity of separation is more sensitive to the variation of SO2. © 2008 Elsevier Ltd. All rights reserved.

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