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Evaluation of a regional bioenergy system with local production of biofuel for transportation, integrated with a CHP plant
Mälardalen University, School of Sustainable Development of Society and Technology.
Mälardalen University, School of Sustainable Development of Society and Technology.ORCID iD: 0000-0001-9230-1596
Mälardalen University, School of Sustainable Development of Society and Technology.ORCID iD: 0000-0002-3485-5440
Mälardalen University, School of Sustainable Development of Society and Technology.ORCID iD: 0000-0003-0300-0762
2012 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 92, p. 739-749Article in journal (Refereed) Published
Abstract [en]

The share of renewable liquid fuels (ethanol, fatty acid methyl ester, biogas, and renewable electricity) in the total transportation fuel in Sweden, has increased by the end of 2009 to such level that e.g. domestic bioethanol production is unable to satisfy current ethanol fuel demand. Regional small-scale ethanol production can assist the region in covering the regional needs in transport fuel supply.

Current case study system includes the production of ethanol, biogas, heat and power from locally available cereals straw. A mixed integer programming (MIP) model is developed for cost optimization of regional transport fuel supply (ethanol, biogas and petrol). The model is applied for two cases, one when ethanol production plant is integrated with an existing CHP plant (polygeneration), and one with a standalone ethanol production plant.

The optimization results show that for both cases the changes in ethanol production costs have the biggest influence on the costs for supplying regional passenger car fleet with transport fuel. Petrol fuel price and straw production costs have also a significant effect on costs for supplying cars with transport fuel for both standalone ethanol production and integrated production system.

By integrating the ethanol production process with a CHP plant, the costs for supplying regional passenger car fleet with transport fuel can be cut by 31%, from 150 to 104 €/MW h fuel, which should be compared with E5 costs of 115 €/MW h (excl VAT).

Place, publisher, year, edition, pages
2012. Vol. 92, p. 739-749
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mdh:diva-13199DOI: 10.1016/j.apenergy.2011.08.016ISI: 000300463800079Scopus ID: 2-s2.0-84855291259OAI: oai:DiVA.org:mdh-13199DiVA, id: diva2:452082
Available from: 2011-10-27 Created: 2011-10-27 Last updated: 2017-12-08Bibliographically approved
In thesis
1. Lignocellulosic Ethanol Production Potential and Regional Transportation Fuel Demand
Open this publication in new window or tab >>Lignocellulosic Ethanol Production Potential and Regional Transportation Fuel Demand
2011 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Road traffic dominates in domestic Swedish transportation and is highly dependent on fossil fuels, petrol and diesel. Currently, the use of renewable fuels in transportation accounts for less than 6% of the total energy use in transport. The demand for bioethanol to fuel transportation is growing and cannot be met through current domestic production alone. Lignocellulosic ethanol derived from agricultural crop residues may be a feasible alternative source of ethanol for securing a consistent regional fuel supply in Swedish climatic conditions.

 This licentiate thesis focuses on regional transport fuel supply by considering local small-scale ethanol production from straw. It presents the results of investigations of regional transport fuel supply with respect to minimising regional CO2 emissions, cost estimates for transport fuel supply, and the availability of lignocellulosic resources for small-scale ethanol production. Regional transport fuel demand between the present and 2020 is also estimated. The results presented here show that significant bioethanol can be produced from the straw and Salix available in the studied regions and that this is sufficient to meet the regions’ current ethanol fuel demand.

 A cost optimisation model for regional transport fuel supply is developed and applied for two cases in one study region, one when the ethanol production plant is integrated with an existing CHP plant (polygeneration), and one with a standalone ethanol production plant. The results of the optimisation model show that in both cases the changes in ethanol production costs have the biggest influence on the cost of supplying the regional passenger car fleet with transport fuel, followed by the petrol price and straw production costs.

 By integrating the ethanol production process with a CHP plant, the costs of supplying regional passenger car fleet with transport fuel can be reduced by up to a third. Moreover, replacing petrol fuel with ethanol can cut regional CO2 emissions from transportation by half.

Place, publisher, year, edition, pages
Västerås: Mälardalens högskola, 2011
Series
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 143
Keywords
Agricultural by-products, Straw, Bioethanol, Transport system, Greenhouse gases (GHG), Polygeneration system, Combined Heat and Power (CHP), Mixed Integer Programming (MIP).
National Category
Natural Sciences Engineering and Technology
Research subject
Energy- and Environmental Engineering
Identifiers
urn:nbn:se:mdh:diva-13176 (URN)978-91-7485-044-4 (ISBN)
Presentation
2011-12-09, Lambda, Mälardalens högskola, Västerås, 10:00 (English)
Opponent
Supervisors
Available from: 2011-10-27 Created: 2011-10-25 Last updated: 2011-11-28Bibliographically approved

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Dotzauer, ErikThorin, EvaYan, Jinyue

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