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Basic Energy and Global Warming Potential Calculations at an Early Stage in the Development of Residential Properties
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment.ORCID iD: 0000-0002-9469-6023
2013 (English)In: Sustainability in Energy and Buildings: Proceedings of the 4th International Conference in Sustainability in Energy and Buildings (SEB´12) / [ed] Anne Hakansson, Mattias Höjer, Robert J. Howlett, Lakhmi C Jain, Springer, 2013, 613-622 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper three different structural alternatives (wooden frame, solid wood and concrete) for multifamily buildings are compared in terms of global warming potential (GWP) due to material production and bought energy-in-use from a life-cycle perspective using the ENSLIC tool [1]. The work has been performed in the pre-programming phase of a real construction project, aiming at achieving passive house standard and certification with the Swedish environmental rating tool Miljöbyggnad (MB).

The results suggest that the wooden structural alternatives are better in terms of GWP (1.8 to 1.9 kg CO2-e/m2, year) compared to the concrete alternative (4.9 kg CO2-e/m2, year). Having said that, there is considerable uncertainty in key input parameters in the calculation. Firstly, construction contractors in question could not supply standardized data for GWP and lifetime for their structural elements, and a combination of generic data and assumptions were used. Secondly, GWP for different energy sources was not available in such a way that it could be analyzed for reliability.

Place, publisher, year, edition, pages
Springer, 2013. 613-622 p.
Series
Smart Innovation, Systems and Technologies, ISSN 2190-3018
Keyword [en]
Energy, climate change, buildings, life-cycle thinking, environmental rating tools
National Category
Environmental Management
Identifiers
URN: urn:nbn:se:kth:diva-116104DOI: 10.1007/978-3-642-36645-1_57Scopus ID: 2-s2.0-84879437822ISBN: 978-3-642-36644-4 (print)ISBN: 978-3-642-36645-1 (print)OAI: oai:DiVA.org:kth-116104DiVA: diva2:588764
Conference
4th International Conference in Sustainability in Energy and Buildings (SEB´12); Stockholm, Sweden 3 - 5 September 2012
Projects
LoReLCA
Note

QC 20130903

Available from: 2013-01-15 Created: 2013-01-15 Last updated: 2017-02-10Bibliographically approved
In thesis
1. Better Low-energy Buildings: The Contribution of Environmental Rating Tools and Life-Cycle Approaches
Open this publication in new window or tab >>Better Low-energy Buildings: The Contribution of Environmental Rating Tools and Life-Cycle Approaches
2014 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2014. x, 27 p.
Series
TRITA-INFRA-FMS-LIC, 2014:01
Keyword
Buildings, energy efficiency, life-cycle assessment, renovation, environmental rating tools
National Category
Environmental Engineering Building Technologies
Identifiers
urn:nbn:se:kth:diva-142004 (URN)978-91-7501-975-8 (ISBN)
Presentation
2014-03-14, Sal L1, Drottning Kristinas Väg 30, entreplan, KTH, Stockholm, 13:00 (English)
Opponent
Supervisors
Note

QC 20140227

Available from: 2014-02-27 Created: 2014-02-27 Last updated: 2014-02-27Bibliographically approved
2. Managing high environmental performance?: Applying life cycle approaches and environmental certification tools in the building and real estate sectors
Open this publication in new window or tab >>Managing high environmental performance?: Applying life cycle approaches and environmental certification tools in the building and real estate sectors
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The main aim of this thesis is  to demonstrate and critically assess life cycle approaches’ and environmental certification (EC) tools’ potential for supporting decisions for improved environmental performance in the building and real estate sectors.

Using life cycle approaches, the thesis shows that for new build and renovation cases aiming for low operational energy use that embodied global warming potential (GWP) due to material production can constitute a large portion of a building’s lifetime GWP. Therefore life cycle based information about materials’ embodied GWP needs to be made available to and utilized by design process decision makers.

It was also shown that applying the Swedish EC tool Miljöbyggnad was useful in highlighting potential positive and negative changes in indoor environmental quality arising from renovation packages aiming at significant operational energy use reduction in existing multifamily buildings. However such renovation packages are not profitable from a property owner perspective. Miljöbyggnad may be useful when designing policy instruments to overcome this.   

The thesis also showed that EC and related environmental enhancements contribute to achieving property owners’ and tenants’ overall strategic objectives for value creation. For property owners this arises for example through lower energy costs and attracting desirable tenants. For tenants, value creation arises as support for internal and external environmental communication.

For the further development of life cycle approaches’ and EC tools’ application to buildings and real estate it is important to consider how they can be adapted to consider ‘distance to sustainable’ targets referencing for instance the planetary boundaries approach. It is also interesting to investigate how valuation of buildings and real estate may be performed in a way that expands from the current narrow focus on the economic perspective to also include environmental and social perspectives.

Place, publisher, year, edition, pages
Stockholm, Sweden: KTH Royal Institute of Technology, 2017. 111 p.
Series
TRITA-INFRA-FMS-PHD, 2017:01
Keyword
Buildings, operational energy use, life cycle assessment, environmental certification, environmental assessment, renovation, strategy, design process, value creation, embodied environmental impacts
National Category
Environmental Management Building Technologies Architecture
Research subject
Planning and Decision Analysis
Identifiers
urn:nbn:se:kth:diva-201614 (URN)978-91-7729-284-5 (ISBN)
Public defence
2017-03-17, D2, Lindstedtsvägen 5, Stockholm, 09:30
Opponent
Supervisors
Funder
Swedish Research Council Formas, 2008-1816Swedish Research Council Formas, 2011-224EU, FP7, Seventh Framework Programme, FP7-ENV-2007-1
Note

QC 20170210

Available from: 2017-02-10 Created: 2017-02-10 Last updated: 2017-03-23Bibliographically approved

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Brown, Nils W. O.

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