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Promotion of sustainable renovation in the built environment: An early stage techno-economic approach
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology.
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

According to the Swedish Government's set targets for energy use and environmental quality imposed by the European Union, the total energy per heated unit area in residential and commercial buildings will have to be decreased by 20% in 2020 and 50% by 2050 in relation to the annual consumption of 1995. The building sector should additionally be completely independent of fossil fuels for energy usage, with the increasing sector of renewable energy continuously growing until 2020. In its current state, the number of multistory buildings and single-family houses in Sweden exceeds 4 000 000 units. In order to attain the set goals, renovation of the existing housing stock is a necessity given its current relatively slow turnover. As a result of the Swedish Million Unit Program undertaken during 1965−1974, about 750 000 apartments are currently in need of renovation in order to meet today's building standards. Simultaneously, new buildings are built with energy efficiency in mind. In this study an early stage methodology is developed for building refurbishment that takes advantage of a multi-faceted approach. The methodology comprises of multiple dimensions related to a techno-economic, environmental and building occupancy approach. The work presented herein includes a thorough literature review of decision making tools within the built environment and identifies major research efforts in sustainable refurbishment. The technical aspect of this study deals with the proper identification of high-efficient insulation materials that would serve one of the set purposes of energy efficiency when utilized within building envelopes. Further, results are shown for case studies, in which economic investments in Vacuum Insulation Panels (VIPs) and a coupled heat and moisture transport for predefined configurations of VIPs with supplementary insulation of balcony slabs and wall cross-sections are considered. The developed methodology also examines simulations of the total energy consumption utilizing a set of different insulation materials such as mineral wool and VIPs, for a number of locations in Northern and Southern Europe. The research findings of this study identify several aspects of a new developed tool for decision making, to be used in sustainable renovation and refurbishment.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2012. , vii, 45 p.
Series
Meddelande. Institutionen för byggvetenskap, ISSN 1651-5536 ; 206
Keyword [en]
Refurbishment, retrofitting, renovation, energy consumption, Vacuum Insulation Panels, ACES
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:kth:diva-102475ISBN: 978-91-7501-438-8 (print)OAI: oai:DiVA.org:kth-102475DiVA: diva2:553041
Presentation
2012-09-24, M108 Stora konferensrummet, Brinellvägen 23, KTH, Stockholm, 12:30 (English)
Opponent
Supervisors
Note

QC 20120918

Available from: 2012-09-18 Created: 2012-09-17 Last updated: 2012-09-18Bibliographically approved
List of papers
1. Sustainable refurbishment in building technology
Open this publication in new window or tab >>Sustainable refurbishment in building technology
2012 (English)In: Smart and Sustainable Built Environment, ISSN 2046-6099, Vol. 1, no 3, 241-252 p.Article in journal (Refereed) Published
Abstract [en]

Purpose – The aim of this review article is to identify a number of key research efforts related to decision making tools in building refurbishment projects and selected energy efficiency efforts in the built environment. Following these findings a proposed research area with focus on energy in the building environment will be suggested for further investigation.

Design/methodology/approach – Through a multilateral review study, a number of major research efforts in sustainable refurbishment are highlighted. The necessity of directing future research towards energy conservation is illustrated for a specific approach to developing the built environment.

Findings – The findings of this article identify high performance thermal insulation solutions as one of the promising approaches to significant energy consumption reductions in buildings.

Research limitations/implications – This review study is solely limited to the revisited research directions.

Originality/value – This study successfully identifies a number of decision making tools related to building refurbishment and an initial research path in favor of building energy consumption reductions.

Place, publisher, year, edition, pages
Emerald Group Publishing Limited, 2012
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-102474 (URN)10.1108/20466091211287128 (DOI)2-s2.0-84993047453 (Scopus ID)
Note

QC 20140327

Available from: 2012-09-17 Created: 2012-09-17 Last updated: 2014-01-27Bibliographically approved
2. On An Operational Decision Making Methodology For Sustainable Building Refurbishment: A Case Study - Riksbyggen Workshop For Renovation
Open this publication in new window or tab >>On An Operational Decision Making Methodology For Sustainable Building Refurbishment: A Case Study - Riksbyggen Workshop For Renovation
(English)In: Building Research & Information, ISSN 0961-3218, E-ISSN 1466-4321Article in journal (Other academic) Submitted
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-102473 (URN)
Note

QS 2012

Available from: 2012-09-17 Created: 2012-09-17 Last updated: 2017-12-07Bibliographically approved
3. Sustainable building renovation and refurbishment with applications of Vacuum Insulation Panels
Open this publication in new window or tab >>Sustainable building renovation and refurbishment with applications of Vacuum Insulation Panels
2011 (English)In: SB11 World Sustainable Building Conference: Proceedings Vol. 2, 2011Conference paper, Published paper (Refereed)
Abstract [en]

A large part of the available energy in the European Union is used for space heating of houses. This utilized energy presents an economical challenge as well as an environmental problem that ultimately must be dealt with by reducing the thermal losses through the climatic envelope. This reduction however, is intricate due to the spatial constraints in designated living areas and complexities arising from retrofitting of historical and cultural façades of the existing building stock. In light of the aforementioned problems, Vacuum Insulation Panels (VIP) may provide attractive solutions as they employ a thickness about one tenth of the required thickness, when using conventional insulation materials. This study contains a comparative analysis of VIP and traditional insulation materials and several other means of retrofitting in terms of life cycle energy and costs. Particular attention is given to the comparison of exterior and interior applications of VIP and the effects on the thermal bridges at the joints between the external wall and the adjacent floor slabs and balconies.

National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-52605 (URN)
Conference
SB11 World Sustainable Building Conference
Note

QC 20120102

Available from: 2011-12-19 Created: 2011-12-19 Last updated: 2016-06-20Bibliographically approved
4. Economic and Environmental Benefits Related to a Sustainable Building Refurbishment
Open this publication in new window or tab >>Economic and Environmental Benefits Related to a Sustainable Building Refurbishment
2012 (English)In: BSA 2012 - Proceedings of the 1st International Conference on Building Sustainability Assessment / [ed] Rogério Amoêda, Ricardo Mateus, Luís Bragança and Cristina Pinheiro, 2012, 53-58 p.Conference paper, Published paper (Refereed)
Abstract [en]

A case study on a multistory building is carried out with emphasis on sustainability and environmental impacts upon refurbishment, in comparison to the existing building performance. The study concerns a multistory building, established during the 1960s in Sweden, as an incentive of the Swedish government’s building strategy “The Million Unit Program”. In this article the difference in utilized insulation techniques in comparison to present building strategies is addressed with a simulation approach. In particular, results are presented for the estimated energy usage for heating calculated in conformity with EN ISO 13790 and based on a dynamic method for buildings prior to and after refurbishment with Vacuum Insulation Panels (VIP). The economic and environmental benefits of a potential refurbishment are further highlighted in relation to the existing building performance.

National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-96543 (URN)
Conference
BSA 2012 - 1st International Conference on Building Sustainability Assessment
Note

QC 20120918

Available from: 2012-06-06 Created: 2012-06-06 Last updated: 2014-01-27Bibliographically approved

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