<div class="csl-bib-body">
<div class="csl-entry">Berger, C., Teufl, H., Pont, U., & Mahdavi, A. (2019). Uncertainties in Building Energy Certification: Two Case Studies Pertaining to Zoning. <i>Applied Mechanics and Materials</i>, <i>887</i>, 156–163. https://doi.org/10.4028/www.scientific.net/amm.887.156</div>
</div>
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dc.identifier.issn
1660-9336
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/142388
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dc.description.abstract
(no german abstract)
Building energy certification is stipulated by law in the majority of the European countries. The intention of these regulations is to offer key performance indicators (KPIs) to relevant and interested stakeholders. Another motivation for implementing these calculation schemes was to compare the energy performance of different buildings. However, existing guidelines for building energy evaluation do not comprehensively outline the input data collection process and the derivation of substantial KPIs. Furthermore, practitioners do not share a common understanding of the approach to energy certificates, resulting in different practical methods and different interpretations of the calculation guidelines. As a result, the envisioned comparability between buildings is not ensured, as a number of studies illustrated in the past.
This contribution focuses on a specific uncertainty in building energy evaluation input data, pertaining to zoning and usage assumptions. Toward this end, two case studies are presented. A number of existing buildings (typical Viennese building stock) were subjected to the Austrian normative energy certification calculation. Thereby, different scenarios regarding the zoning and usage profiles of the buildings were developed. On the one hand, the calculated performance of individual (residential) units was compared with the calculated performance of the whole building. On the other hand, calculations considering different usage assumptions in different zones within the building (detailed calculation) were compared to results based on generalized assumptions for the whole building. The evaluation of the case study buildings showed significant differences in KPIs, given different input data (depending on the case study, heating demand showed deviations up to 50%). The results emphasize the importance of a clear documentation of input data assumptions for building-related energy assessment.
de
dc.description.abstract
Building energy certification is stipulated by law in the majority of the European countries. The intention of these regulations is to offer key performance indicators (KPIs) to relevant and interested stakeholders. Another motivation for implementing these calculation schemes was to compare the energy performance of different buildings. However, existing guidelines for building energy evaluation do not comprehensively outline the input data collection process and the derivation of substantial KPIs. Furthermore, practitioners do not share a common understanding of the approach to energy certificates, resulting in different practical methods and different interpretations of the calculation guidelines. As a result, the envisioned comparability between buildings is not ensured, as a number of studies illustrated in the past.
This contribution focuses on a specific uncertainty in building energy evaluation input data, pertaining to zoning and usage assumptions. Toward this end, two case studies are presented. A number of existing buildings (typical Viennese building stock) were subjected to the Austrian normative energy certification calculation. Thereby, different scenarios regarding the zoning and usage profiles of the buildings were developed. On the one hand, the calculated performance of individual (residential) units was compared with the calculated performance of the whole building. On the other hand, calculations considering different usage assumptions in different zones within the building (detailed calculation) were compared to results based on generalized assumptions for the whole building. The evaluation of the case study buildings showed significant differences in KPIs, given different input data (depending on the case study, heating demand showed deviations up to 50%). The results emphasize the importance of a clear documentation of input data assumptions for building-related energy assessment.
en
dc.language.iso
en
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dc.publisher
Trans Tech Publications
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dc.relation.ispartof
Applied Mechanics and Materials
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dc.subject
General Engineering
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dc.subject
key performance indicators
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dc.subject
building energy certification
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dc.subject
zoning
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dc.subject
usage profiles
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dc.title
Uncertainties in Building Energy Certification: Two Case Studies Pertaining to Zoning
en
dc.type
Artikel
de
dc.type
Article
en
dc.description.startpage
156
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dc.description.endpage
163
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dc.type.category
Original Research Article
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tuw.container.volume
887
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tuw.journal.peerreviewed
true
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tuw.peerreviewed
true
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tuw.researchTopic.id
E6
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tuw.researchTopic.id
E1
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tuw.researchTopic.name
Sustainable Production and Technologies
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tuw.researchTopic.name
Energy Active Buildings, Settlements and Spatial Infrastructures
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tuw.researchTopic.value
60
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tuw.researchTopic.value
40
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dcterms.isPartOf.title
Applied Mechanics and Materials
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tuw.publication.orgunit
E259-03 - Forschungsbereich Bauphysik und Bauökologie
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tuw.publisher.doi
10.4028/www.scientific.net/amm.887.156
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dc.identifier.eissn
1660-9336
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dc.description.numberOfPages
8
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wb.sciencebranch
Architektur
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wb.sciencebranch
Bauingenieurwesen
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wb.sciencebranch.oefos
2012
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wb.sciencebranch.oefos
2011
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wb.facultyfocus
Öko-effiziente Entwicklung und Gestaltung der gebauten Umwelt und der räumlichen Ressourcen
de
wb.facultyfocus
Eco-efficient development and design of the built environment
en
wb.facultyfocus.faculty
E250
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item.languageiso639-1
en
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item.openairecristype
http://purl.org/coar/resource_type/c_2df8fbb1
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item.openairetype
research article
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item.grantfulltext
none
-
item.fulltext
no Fulltext
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item.cerifentitytype
Publications
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crisitem.author.dept
E259-03 - Forschungsbereich Bauphysik und Bauökologie
-
crisitem.author.dept
E259-03 - Forschungsbereich Bauphysik und Bauökologie
-
crisitem.author.dept
E259-03 - Forschungsbereich Bauphysik und Bauökologie