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Allocation of carbon dioxide emissions to the by-products of combined heat and power plants: A methodological guidance

dc.date.accessioned2023-11-16T16:24:11Z
dc.date.available2023-11-16T16:24:11Z
dc.date.issued2023-10-07
dc.identifierdoi:10.17170/kobra-202311088985
dc.identifier.urihttp://hdl.handle.net/123456789/15187
dc.description.sponsorshipGefördert durch den Publikationsfonds der Universität Kasselger
dc.language.isoeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectCogenerationeng
dc.subjectCombined Heat and Powereng
dc.subjectEmissions allocationeng
dc.subjectEvaluation schemeeng
dc.subjectFinnish methodeng
dc.subjectEnergy methodeng
dc.subject.ddc333
dc.titleAllocation of carbon dioxide emissions to the by-products of combined heat and power plants: A methodological guidanceeng
dc.typeAufsatz
dcterms.abstractCogeneration has higher efficiency than separate heat and power generation. Since both are generated in a single process, it is necessary to allocate the emissions to by-products for comparing their environmental performance. Numerous methods exist resulting in very different allocations. There is no consensus regarding the method choice. The main objective of this article is the development and implementation of an evaluation scheme allowing the choice of an appropriate method for specific applications. This scheme consists of nine criteria in the categories “Applicability”, “Environmental relevance”, and “Systematic approach” allowing a rating. The Finnish method performs best for a standard use case resulting in emission factors of 322 g CO₂ / kWhel and 192 g CO₂ / kWhth. Both are associated with less emissions per unit then the electricity and district heating mix of Germany in 2020 that were 375 g CO₂ / kWhel and 270 g CO₂ / kWhth. Therefore, cogeneration electricity and heat could contribute to climate protection in the short- to mid-term. The implementation of two sensitivity analyses shows that the location and country-specific emission factors can have a great influence on the results and the contribution to climate protection. Depending on use case and individual importance of certain criteria the Energy, the Exergy or the Greenhouse Gas method can be preferable. Each scored with one point less than the Finnish method. In contrast to existing publications, this study supports decision-makers in transparently selecting an appropriate allocation method when assessing the products of cogeneration by considering different criteria.eng
dcterms.accessRightsopen access
dcterms.creatorBuchenau, Nadja
dcterms.creatorHannen, Conrad
dcterms.creatorHolzapfel, Peter
dcterms.creatorFinkbeiner, Matthias
dcterms.creatorHesselbach, Jens
dc.relation.doidoi:10.1016/j.rset.2023.100069
dc.subject.swdKraft-Wärme-Kopplungger
dc.subject.swdEmissionger
dc.subject.swdKohlendioxidger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:2667-095X
dcterms.source.journalRenewable and Sustainable Energy Transitioneng
dcterms.source.volumeVolume 4
kup.iskupfalse
dcterms.source.articlenumber100069


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