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

SUSTAINABLE BUILT ENVIRONMENT D-A-CH CONFERENCE 2019

生态环境科学

Frischknecht, R.^1 ; Birgisdottir, H.^2 ; Chae, C.-U.^3 ; Lützkendorf, T.^4 ; Passer, A.^5 ; Alsema, E.^6 ; Balouktsi, M.^4 ; B., Berg ; D., Dowdell ; A., Garcia Martinez ; G., Habert ; A., Hollberg ; H., König ; S., Lasvaux ; C., Llatas ; F., Nygaard Rasmussen ; B., Peuportier ; L., Ramseier ; M., Röck ; B., Soust Verdaguer ; Z., Szalay ; R.A., Bohne ; L., Braganca ; M., Cellura ; C.K., Chau ; M., Dixit ; N., Francart ; V., Gomes ; L., Huang ; S., Longo ; A., Lupiek ; J., Martel ; R., Mateus ; C., Ouellet-Plamondon ; F., Pomponi ; P., Ryklová ; D., Trigaux ; W., Yang

Treeze Ltd., Switzerland^1

Aalborg University, Denmark^2

Korea Institute of Civil Engineering and Building Technology, Korea, Republic of^3

Karlsruhe Institute of Technology, Germany^4

Graz University of Technology, Austria^5

W/E Consultants, Netherlands^6

BRANZ, New Zealand^7

Universidad de Sevilla, Spain^8

ETH Zurich, Switzerland

(10) Ascona, Germany

(11) HES-SO, IGT-LESBAT, Switzerland

(12) MINES ParisTech, France

(13) Budapest University of Technology and Economics, Hungary

(14) NTNU, Norwegian University of Science and Technology, Norway

(15) University of Minho, Portugal

(16) University of Palermo, Italy

(17) Hong Kong Polytechnic University, Hong-Kong, Hong Kong

(18) Texas AandM University, United States

(19) KTH Royal Institute of Technology, Sweden

(20) University of Campinas, Brazil

(21) Czech Technical University in Prague, University Centre for Energy Efficient Buildings, Czech Republic

(22) Groupe Ageco, Canada

(23) Ecole de Technologie Supérieure, Canada

(24) Resource Efficient Built Environment Lab (REBEL), Edinburgh Napier University, United Kingdom

(25) Energy Ville KU Leuven, VITO, Belgium

(26) Tianjin University, China^9

关键词: Building assessment;    Construction activities;    Construction sites;    Entire life cycles;    Environmental assessment;    National assessment;    Operational energy;    Primary energy demand;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/323/1/012037/pdf
DOI  :  10.1088/1755-1315/323/1/012037

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

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.