Abstract
A non-repeating thermal bridge occurs at junctions when building components such as a metal lintel crossing from the buildings’ interior to exterior with a little or no intervening insulation, creating a ‘bridge’ for heat losses through the external wall. In the UK, when considering a domestic building with standards of the building regulation 2006, the proportion of heat losses due to non-repeating thermal bridges is typically 10–15 %. This can rise up to 30 % in highly insulated low energy buildings. Limiting thermal bridging will therefore become increasingly important as more energy efficient buildings are being built due to more stringent requirements by the current and future building regulations, and the endorsements of higher levels by the Code for Sustainable Homes (CfSH) standard. The study has undertaken dynamic computer simulations to calculate the impact on heating energy consumption and to provide both cost and CO2 benefit analysis for a typical four bedroom terraced house with installation of Glass Reinforced Plastic (GRP) lintels and conventional use of Steel lintels under London climate. Furthermore, two-dimensional temperature and relative humidity distribution study has been carried out to investigate the condensation risks, and the results are presented in this paper based on energy performance where a better insulated home with GRP lintels showed better performance levels in heating energy consumption, CO2 emissions and overall energy bills. However, the most significant result of the reductions was achieved by improving the building fabric. Moreover, the reduction achieved from installation of GRP lintels has provided a further 10 % energy demand reduction compared with the conventional Steel lintel use in the case study home. With regard to the condensation risk and the two-dimensional study, the paper has shown that the GRP lintel use would reduce non-repeating thermal bridges significantly, particularly around junctions, and at the same time can help keeping dry the area around the junctions. On the other hand, the Steel lintel use would have high risks for condensation and again can cause further health implications with mould growth on surfaces.
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References
HM Treasury (2006) Pre-budget report 2006, investing in Britain’s potential: building our long-term future. HM Treasury, London
DECC (2011) Annual report on fuel poverty statistics 2011. National Statistics, Department of Energy & Climate Change (DECC)
LSI. Low carbon housing, learning zone, Leeds Metropolitan University, Leeds Sustainability Institute (LSI). http://www.leedsmet.ac.uk/teaching/vsite/low_carbon_housing/thermal_bridging/introduction/index.htm. Accessed on 24 Feb 2012
BRE (2010) The government’s standard assessment procedure for energy rating of dwellings 2009 edition. Building Research Establishment (BRE), Garston, Watford
EST (2010) CE317—Domestic low and zero carbon technologies: technical and practical integration in housing. UK. Energy Saving Trust (EST)
CLG (2009) English Housing Condition Survey 2007. Annual report, Communities and Local Government (CLG)
NHBC. Approved Document Part L 2010: Special Edition. Technical Extra, September 2011, Issue 03, National House Building Council (NHBC). http://www.nhbc.co.uk/NHBCPublications/LiteratureLibrary/Technical/TechnicalExtra/filedownload,44601,en.pdf. Accessed 24 Feb 2012
Government of Ireland (2008) Limiting thermal bridging and air infiltration: acceptable construction details. Report by Department of the Environment, Community and Local Government, HomeBond, Sustainable Energy Ireland (SEI), July 2008
EST (2005) Guide GPG224—improving airtightness in dwellings. Energy Saving Trust (EST)
BRE (2006) BRE Information Paper IP 1/06—assessing the effects of thermal bridging at junctions and around openings. Building Research Establishment (BRE), Garston, Watford
HM Government (2010) The Building Regulation 2010: conservation of fuel and power in new dwellings. Approved Document Part L1A. HM Government, London
Stephen RK (1998) Airtightness in UK dwellings: BRE’s test results and their significance. BRE Report 359. Building Research Establishment, Garston, Watford
Litel. LITEL®. http://litel.co.uk/. Accessed 24 Feb 2012
DesignBuilder. DesignBuilder software. DesignBuilder Software Ltd. http://www.designbuilder.co.uk/. Accessed 24 Feb 2012
Acknowledgements
The authors would like to thank Chris Sullivan (Material Edge Ltd) for providing information about a GRP lintel (The Litel®) and Prof. Dr. Jitka Mohelnikova at Brno University of Technology – Faculty of Civil Engineering (VUT FAST Brno) for her input and advice. The authors would also like to thank the Building Environments Analysis Unit (BEAU) Research Centre (2007–2013) at the University of Sheffield and the British government funding Engineering and Physical Sciences Research Council (EPSRC) for making this research collaboration possible.
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Altan, H., Kim, Y.K. (2014). Non Repeating Thermal Bridges and the Impact on Overall Heating Energy Consumption in a Typical UK Home. In: Dincer, I., Midilli, A., Kucuk, H. (eds) Progress in Sustainable Energy Technologies Vol II. Springer, Cham. https://doi.org/10.1007/978-3-319-07977-6_8
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DOI: https://doi.org/10.1007/978-3-319-07977-6_8
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