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Better Low-energy Buildings: The Contribution of Environmental Rating Tools and Life-Cycle Approaches
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering, Environmental Strategies Research (fms).ORCID iD: 0000-0002-9469-6023
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 [en]
Buildings, energy efficiency, life-cycle assessment, renovation, environmental rating tools
National Category
Environmental Engineering Building Technologies
Identifiers
URN: urn:nbn:se:kth:diva-142004ISBN: 978-91-7501-975-8 (print)OAI: oai:DiVA.org:kth-142004DiVA: diva2:699324
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
List of papers
1. Sustainability assessment of renovation packages for increased energy efficiency for multi-family buildings in Sweden
Open this publication in new window or tab >>Sustainability assessment of renovation packages for increased energy efficiency for multi-family buildings in Sweden
2012 (English)In: Building and Environment, ISSN 0360-1323, E-ISSN 1873-684X, Vol. 61, 140-148 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, we propose a method for assessing renovation packages drawn up with the goal of increasing energy efficiency. The method includes calculation of bought energy demand, life-cycle cost (LCC) analysis and assessment of the building according to the Swedish environmental rating tool Miljöbyggnad (MB). In this way the methodology assesses economic, indoor environmental quality (IEQ) and specifically environmental aspects associated with energy demand of such packages from a sustainability point-of-view. Through MB, energy efficiency packages are placed in context with other necessary measures required to improve environmental performance in buildings, providing a consistent and systematic basis other than simply financial performance by which to compare capital improvements. The method is further explained and analyzed by applying it in three case studies. In each case study a multi-family building representing a typologically significant class in the Swedish building stock is considered, and for each building a base case and two renovation packages with higher initial investment requirement and higher energy efficiency are defined. It is shown that higher efficiency packages can impact IEQ indicators both positively and negatively and that packages reducing energy demand by approx. 50% have somewhat higher LCC. Identified positive IEQ impacts point to added value for packages that may not otherwise be communicated, while negative impacts identify areas where packages need to be improved, or where MB indicators may be referred to as specifications in procurement procedures.

Keyword
Buildings, Sustainability, Environmental Rating Tools, Life-cycle costing
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-105422 (URN)10.1016/j.buildenv.2012.11.019 (DOI)000315754600013 ()2-s2.0-84872812419 (Scopus ID)
Projects
MECOREN
Funder
Swedish Research Council Formas
Note

QC 20130215. Updated from In press to published.

Available from: 2012-11-21 Created: 2012-11-21 Last updated: 2017-12-13Bibliographically approved
2. Basic Energy and Global Warming Potential Calculations at an Early Stage in the Development of Residential Properties
Open this publication in new window or tab >>Basic Energy and Global Warming Potential Calculations at an Early Stage in the Development of Residential Properties
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
Series
Smart Innovation, Systems and Technologies, ISSN 2190-3018
Keyword
Energy, climate change, buildings, life-cycle thinking, environmental rating tools
National Category
Environmental Management
Identifiers
urn:nbn:se:kth:diva-116104 (URN)10.1007/978-3-642-36645-1_57 (DOI)2-s2.0-84879437822 (Scopus ID)978-3-642-36644-4 (ISBN)978-3-642-36645-1 (ISBN)
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
3. Screening of globalwarming potential due to material production for renovation measures for 50 % decrease innet energy demand of existing stock of residential buildings in Sweden
Open this publication in new window or tab >>Screening of globalwarming potential due to material production for renovation measures for 50 % decrease innet energy demand of existing stock of residential buildings in Sweden
(English)Manuscript (preprint) (Other academic)
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-142002 (URN)
Note

QS 2014

Available from: 2014-02-27 Created: 2014-02-27 Last updated: 2014-02-27Bibliographically approved

Open Access in DiVA

Thesis(234 kB)490 downloads
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Type fulltextMimetype application/pdf

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Brown, Nils

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