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A celestial motion-based solar photovoltaics installed on a cooling tower
Southwest Jiaotong Univ, Sch Mech Engn, Chengdu, Peoples R China.;Mälardalen Univ, Sch Business Soc & Energy, SE-72123 Västerås, Sweden..
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. Key Lab Pressure Syst & Safety MOE, Shanghai 200237, Peoples R China..
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. Qilu Univ Technol, Sch Mech & Automot Engn, Shandong Acad Sci, Jinan 250353, Peoples R China..
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0003-0300-0762
2020 (English)In: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. 216, article id 112957Article in journal (Refereed) Published
Abstract [en]

Traditional photovoltaic systems are facing two major problems, including occupying excessive land resources and causing power loss due to long-distance power transmission. In this paper, we investigate an adaptive celestial motion-based solar photovoltaics, which is installed on the cooling tower of a thermal power plant. The proposed solar photovoltaics can rotate around its own axis and revolve around the cooling tower, which enables the solar panels to be always perpendicular to the solar rays based on the rotation and revolution of the earth. In order to estimate the technical and economic performance of the solar photovoltaics, three thermal power plants located in Wujing, Datong, and Hami in China are selected for a case study. Comparative analysis is conducted under four different photovoltaic configurations of fixed angle, adjustable azimuth, adjustable tilt, and adjustable azimuth and tilt of solar panels. Analysis and estimation results show that the capacities of photovoltaic installations reach 1.76 MW, 3.51 MW, and 1.82 MW, with corresponding annual power generation of 2.13 GWh, 6.00 GWh, and 3.94 GWh in Wujing, Datong, and Hami, respectively. The total profits are 27.9 million CNY, 60.7 million CNY, and 36.0 million CNY, with the return on investment of 240%, 261%, and 300%, respectively. Based on solar radiation, local electricity price, and cooling tower area, the payback period for PVs of the three studied power plants is about 6 years. The high energy and economic benefits indicate that the proposed photovoltaics has a good prospect for being considered as an auxiliary power generation system in thermal power plant.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2020. Vol. 216, article id 112957
Keywords [en]
Solar photovoltaics, Cooling tower, Photovoltaics configuration, Technical and economic performances
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-48934DOI: 10.1016/j.enconman.2020.112957ISI: 000537788600022Scopus ID: 2-s2.0-85084980964OAI: oai:DiVA.org:mdh-48934DiVA, id: diva2:1443721
Available from: 2020-06-18 Created: 2020-06-18 Last updated: 2022-11-25Bibliographically approved

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Jiang, MingkunLyu, YuexiaYan, Jinyue

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