Fossil fuel sustainability: Exergy assessment of a cogeneration system

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dc.authorid0000-0002-4245-7741
dc.contributor.authorBayrak, Mustafa
dc.contributor.authorGungor, Afsin
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2011
dc.departmentNiğde ÖHÜ
dc.description.abstractThermodynamics plays an important role to perform the energy and exergy analyses of the industrial processes. The first law is widely used in engineering practice and is the basis of the heat-balance method of analysis that is commonly used in energy systems performance analysis. However, the second law involves the reversibility or irreversibility of processes and is a very important aspect in the exergy method of energy systems analysis. From the viewpoints of energy conservation and environmental benefits, cogeneration system can be considered as one of sustainable energies. The exergy analysis allows for improvements not necessarily attainable via energy methods, like increased efficiency, reduced fuel use, and reduced environmental emissions. From this point of view, in this study, exergy analysis of an actual Diesel engine-based cogeneration plant with a total capacity of 11.52 MW electrical powers, 9 t h (-1) of steam and 140 t h (-1) of hot water is carried out by analyzing the components of the system separately. The results show that 39.86% of the exergy entering the plant is converted to electrical power. The net steam production of the plant constitutes 8% of the total exergy input and the hot water production of the plant constitutes only 1.26% of the total exergy input. The remaining 50.88% of the exergy input is lost. Total exergy destruction in the engine is mostly due to the highly irreversible combustion process in the engine, heat losses from engine and friction. Small improvements in engine design and operation can provide better utilization of plant performance compared to large and expensive improvements in other components. Copyright (C) 2010 John Wiley & Sons, Ltd.
dc.identifier.doi10.1002/er.1759
dc.identifier.endpage168
dc.identifier.issn0363-907X
dc.identifier.issue2
dc.identifier.scopus2-s2.0-78751511758
dc.identifier.scopusqualityQ1
dc.identifier.startpage162
dc.identifier.urihttps://dx.doi.org/10.1002/er.1759
dc.identifier.urihttps://hdl.handle.net/11480/4756
dc.identifier.volume35
dc.identifier.wosWOS:000287161900011
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherJOHN WILEY & SONS LTD
dc.relation.ispartofINTERNATIONAL JOURNAL OF ENERGY RESEARCH
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectthermodynamic analysis
dc.subjectexergy
dc.subjectoptimization
dc.subjectcogeneration
dc.subjectsustainable
dc.titleFossil fuel sustainability: Exergy assessment of a cogeneration system
dc.typeArticle

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