Environmental and Economic Prioritization of Building Energy Refurbishment Strategies with Life-Cycle Approach

An increasing number of studies apply life-cycle assessment methodology to assess the impact of a new building or to prioritize between different building refurbishment strategies. Among the different hypotheses to consider during the application of this methodology, the selection of the impact indi...

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Autores: Oregi Isasi, Xabat, Hernández Minguillón, Rufino Javier, Hernández, Patxi
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/43294
Acceso en línea:http://hdl.handle.net/10810/43294
Access Level:acceso abierto
Palabra clave:building energy refurbishment
environmental and economic life-cycle assessment
impact indicators
sensitivity analysis
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spelling Environmental and Economic Prioritization of Building Energy Refurbishment Strategies with Life-Cycle ApproachOregi Isasi, XabatHernández Minguillón, Rufino JavierHernández, Patxibuilding energy refurbishmentenvironmental and economic life-cycle assessmentimpact indicatorssensitivity analysisAn increasing number of studies apply life-cycle assessment methodology to assess the impact of a new building or to prioritize between different building refurbishment strategies. Among the different hypotheses to consider during the application of this methodology, the selection of the impact indicator is critical, as this choice will completely change the interpretation of the results. This article proposes applying four indicators that allow analysing the results of a refurbishment project of a residential building with the life-cycle approach: non-renewable primary energy use reduction (NRPER), net energy ratio (NER), internal rate of return (IRR), and life-cycle payback (LC-PB). The combination of environmental and economic indicators when evaluating the results has allowed to prioritize among the different strategies defined for this case study. Furthermore, an extensive sensitivity assessment reflects the high uncertainty of some of the parameters and their high influence on the final results. To this end, new hypotheses related to the following parameters have been considered: reference service life of the building, estimated service life of material, operational energy use, conversion factor, energy price, and inflation rate. The results show that the NRPE use reduction value could vary up to −44%. The variation of the other indicators is also very relevant, reaching variation rates such as 100% in the NER, 450% in the IRR, and 300% in the LC-PB. Finally, the results allow to define the type of input or hypothesis that influences each indicator the most, which is relevant when calibrating the prioritization process for the refurbishment strategy.The authors thank the Department of Architecture and the Vicerrectorate for Research of the University of the Basque Country UPV/EHU for the financial support given for this research.MDPI2020202020202020info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/43294reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoIngléshttps://www.mdpi.com/2071-1050/12/9/3914/htminfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).oai:addi.ehu.eus:10810/432942026-06-18T09:23:17Z
dc.title.none.fl_str_mv Environmental and Economic Prioritization of Building Energy Refurbishment Strategies with Life-Cycle Approach
title Environmental and Economic Prioritization of Building Energy Refurbishment Strategies with Life-Cycle Approach
spellingShingle Environmental and Economic Prioritization of Building Energy Refurbishment Strategies with Life-Cycle Approach
Oregi Isasi, Xabat
building energy refurbishment
environmental and economic life-cycle assessment
impact indicators
sensitivity analysis
title_short Environmental and Economic Prioritization of Building Energy Refurbishment Strategies with Life-Cycle Approach
title_full Environmental and Economic Prioritization of Building Energy Refurbishment Strategies with Life-Cycle Approach
title_fullStr Environmental and Economic Prioritization of Building Energy Refurbishment Strategies with Life-Cycle Approach
title_full_unstemmed Environmental and Economic Prioritization of Building Energy Refurbishment Strategies with Life-Cycle Approach
title_sort Environmental and Economic Prioritization of Building Energy Refurbishment Strategies with Life-Cycle Approach
dc.creator.none.fl_str_mv Oregi Isasi, Xabat
Hernández Minguillón, Rufino Javier
Hernández, Patxi
author Oregi Isasi, Xabat
author_facet Oregi Isasi, Xabat
Hernández Minguillón, Rufino Javier
Hernández, Patxi
author_role author
author2 Hernández Minguillón, Rufino Javier
Hernández, Patxi
author2_role author
author
dc.subject.none.fl_str_mv building energy refurbishment
environmental and economic life-cycle assessment
impact indicators
sensitivity analysis
topic building energy refurbishment
environmental and economic life-cycle assessment
impact indicators
sensitivity analysis
description An increasing number of studies apply life-cycle assessment methodology to assess the impact of a new building or to prioritize between different building refurbishment strategies. Among the different hypotheses to consider during the application of this methodology, the selection of the impact indicator is critical, as this choice will completely change the interpretation of the results. This article proposes applying four indicators that allow analysing the results of a refurbishment project of a residential building with the life-cycle approach: non-renewable primary energy use reduction (NRPER), net energy ratio (NER), internal rate of return (IRR), and life-cycle payback (LC-PB). The combination of environmental and economic indicators when evaluating the results has allowed to prioritize among the different strategies defined for this case study. Furthermore, an extensive sensitivity assessment reflects the high uncertainty of some of the parameters and their high influence on the final results. To this end, new hypotheses related to the following parameters have been considered: reference service life of the building, estimated service life of material, operational energy use, conversion factor, energy price, and inflation rate. The results show that the NRPE use reduction value could vary up to −44%. The variation of the other indicators is also very relevant, reaching variation rates such as 100% in the NER, 450% in the IRR, and 300% in the LC-PB. Finally, the results allow to define the type of input or hypothesis that influences each indicator the most, which is relevant when calibrating the prioritization process for the refurbishment strategy.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/43294
url http://hdl.handle.net/10810/43294
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://www.mdpi.com/2071-1050/12/9/3914/htm
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
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dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
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dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
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