Comparison of the greenhouse gas emissions of a high-rise residential building assessed with different national LCA approaches - IEA EBC Annex 72

R. Frischknecht*, L. Ramseier, W. Yang, H. Birgisdottir, Ch U. Chae, T. Lützkendorf, A. Passer, M. Balouktsi, B. Berg, L. Bragança, J. Butler, M. Cellura, M. Dixit, D. Dowdell, N. Francart, A. García Martínez, V. Gomes, M. Gomes da Silva, G. Guimaraes, E. HoxhaM. Kjendseth Wiik, H. König, C. Llatas, S. Longo, A. Lupíšek, J. Martel, R. Mateus, F. Nygaard Rasmussen, C. Ouellet-Plamondon, B. Peuportier, F. Pomponi, L. Pulgrossi, M. Röck, D. Satola, B. Soust Verdaguer, Z. Szalay, A. Truong Nhu, J. Veselka, M. Volf, O. Zara

*Kontaktforfatter

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

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Abstrakt

Introduction: The international research project IEA EBC Annex 72 investigates the life cycle related environmental impacts caused by buildings. The project aims inter alia to harmonise LCA approaches on buildings. Methods: To identify major commonalities and discrepancies among national LCA approaches, reference buildings were defined to present and compare the national approaches. A residential high-rise building located in Tianjin, China, was selected as one of the reference buildings. The main construction elements are reinforced concrete shear walls, beams and floor slabs. The building has an energy reference area of 4566 m2 and an operational heating energy demand of 250 MJ/m2a. An expert team provided information on the quantities of building materials and elements required for the construction, established a BIM model and quantified the operational energy demand. Results: The greenhouse gas emissions and environmental impacts of the building were quantified using 17 country-specific national assessment methods and LCA databases. Comparisons of the results are shown on the level of building elements as well as the complete life cycle of the building. Conclusions: The results of these assessments show that the main differences lie in the LCA background data used, the scope of the assessment and the reference study period applied. Despite the variability in the greenhouse gas emissions determined with the 17 national methods, the individual results are relevant in the respective national context of the method, data, tool and benchmark used. It is important that environmental benchmarks correspond to the particular LCA approach and database of a country in which the benchmark is applied. Furthermore, the results imply to include building technologies as their contribution to the overall environmental impacts is not negligible. Grant support: The authors thank the IEA for its organizational support and the funding organizations in the participating countries for their financial support.
OriginalsprogEngelsk
TitelConference Proceedings : World Sustainable Built Environment online conference BEYOND 2020: 2- 4 November 2020
RedaktørerHolger Walbaum, Alexander Hollberg, Liane Thuvander, Paula Femenias, Izabela Kurkowska, Kristina Mjörnell, Colin Fudge
Antal sider9
ForlagIOP Publishing
Publikationsdato20 nov. 2020
Sider1-9
Artikelnummer022029
DOI
StatusUdgivet - 20 nov. 2020
BegivenhedWorld Sustainable Built Environment - Beyond 2020, WSBE 2020 - Gothenburg, Sverige
Varighed: 2 nov. 20204 nov. 2020

Konference

KonferenceWorld Sustainable Built Environment - Beyond 2020, WSBE 2020
LandSverige
ByGothenburg
Periode02/11/202004/11/2020
SponsorAutodesk Construction Cloud, Bona, Construction Industry Council, et al., HKGBC, Skanska
NavnIOP Conference Series: Earth and Environmental Science
Nummer 2 (1.01-1.05)
Vol/bind588
ISSN1755-1307

Bibliografisk note

Funding Information:
The authors would like to thank the IEA for its organizational support and the colleagues involved in the project (Members: Australia, Austria, Belgium, Canada, Czech Republic, P.R. China, Denmark, Finland, France, Germany, Italy, R. Korea, the Netherlands, New Zealand, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom, United States of America, Observers: Brazil, Hungary, India, Slovenia) for their cooperation. Additionally, they would like to thank the organizations and institutions in the participating countries for their financial support.

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