Comparison of the environmental assessment of an identical office building with national methods

Frischknecht, R. (treeze Ltd, Switzerland) ; Birgisdottir, H. (Aalborg University, Denmark) ; Chae, C.-U. (Korea Institute of Civil Engineering & Building Technology, Korea) ; Lützkendorf, T. (Karlsruhe Institute of Technology, Germany) ; Passer, A. (Graz University of Technology, Austria) ; Alsema, E. (W/E Consultants, Netherlands) ; Balouktsi, M. (Karlsrue Institute of Technology, Germany) ; Berg, B. (BRANZ, New Zealand) ; Dowdell, D. (BRANZ, New Zealand) ; Garcia Martinez, A. (Universidad de Sevilla, Spain) ; Habert, G. (ETH, Switzerland) ; Hollberg, A. (ETH, Switzerland) ; König, H. (Ascona, Germany) ; Lasvaux, Sébastien (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Llatas, C. (Universidad de Sevilla, Spain) ; Nygaard Rasmussen, F. (Aalborg University, Denmark) ; Peuportier, B. (MINES ParisTech, France) ; Ramseier, L. (treeze Ltd, Switzerland) ; Röck, M. (Graz University, Austria) ; Soust Verdaguer, B. (Universidad de Sevilla, Spain) ; Szalay, Z. (Budapest University of Technology and Economics, Hungary) ; Bohne, R.A. (NTNU - Norwegian University of Science and Technology, Norway) ; Bragança, L. (University of Minho, Portugal) ; Cellura, M. (University of Palermo, Italy) ; Chau, C. K. (The Hong Kong Polytechnic University, Hong-Kong) ; Dixit, M. (Texas A&M University, USA) ; Francart, N. (KTH Royal Institute of Technology, Sweden) ; Gomes, V. (University of Campinas, Brazil) ; Huang, L. (NTNU - Norwegian University of Science and Technology, Norway) ; Longo, S. (University of Palermo, Italy) ; Lupisek, A. (Czech Technical University in Prague, University Centre for Energy Efficient Buildings, Czech Republic) ; Martel, J. (Groupe Ageco, Canada) ; Mateus, R. (University of Minho, Portugal) ; Ouellet-Plamondon, C. (Ecole de technologie supérieure, Canada) ; Pomponi, F. (Resource Efficient Built Environment Lab (REBEL), Edinburgh Napier University, United Kingdom) ; Ryklova, P. (Czech Technical University in Prague, University Centre for Energy Efficient Buildings, Czech Republic) ; Trigaux, D. (EnergyVille / KU Leuven / VITO, Belgium) ; Yang, Y. (Tianjin University, China)

The IEA EBC Annex 72 focuses on the assessment of the primary energy demand, greenhouse gas emissions and environmental impacts of buildings during production, construction, use (including repair and replacement) and end of life (dismantling), i.e. during the entire life cycle of buildings. In one of its activities, reference buildings (size, materialisation, operational energy demand, etc.) were defined on which the existing national assessment methods are applied using national (if available) databases and (national/regional) approaches. The "be2226" office building in Lustenau, Austria was selected as one of the reference buildings. TU Graz established a BIM model and quantified the amount of building elements as well as construction materials required and the operational energy demand. The building assessment was carried out using the same material and energy demand but applying the LCA approach used in the different countries represented by the participating Annex experts. The results of these assessments are compared in view of identifying major discrepancies. Preliminary findings show that the greenhouse gas emissions per kg of building material differ up to a factor of two and more. Major differences in the building assessments are observed in the transports to the construction site (imports) and the construction activities as well as in the greenhouse gas emissions of the operational energy demand (electricity). The experts document their practical difficulties and how they overcame them. The results of this activity are used to better target harmonisation efforts.

Conference Type:
full paper
Ingénierie et Architecture
IGT - Institut de Génie Thermique
Graz, Austria, 11-14 September 2019
Graz, Austria
11-14 September 2019
12 p.
Published in:
IOP Conference Series: Earth and Environmental Science ; Proceedings of Sustainable Built Environment D-A-CH Conference 2019 (sbe19 Graz), 11–14 September 2019, Graz, Austria
Numeration (vol. no.):
2019, vol. 323, article no. 012037
Appears in Collection:

 Record created 2020-04-07, last modified 2020-10-27

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