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Demonstrating thermal performance: The role and challenges of testing methodologies

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  • Williams, Ray

Abstract

The UK's commitment to reduce CO2 emissions by 80 per cent by 2050 presents the construction industry with an extremely difficult challenge. To produce the highly energy-efficient new buildings and adequately retrofit the 20 million existing ones we must start to use all the tools at our disposal. Worryingly, it is now apparent that a significant gap between the as-designed thermal performance of buildings and the actual performance already exists. This paper puts forward the case that a significant contributor to that gap is the regulatory regime that has been put in place, which allows the U-values of all the building components and structures to be calculated — never verified by measurement. A list of the main measurement and calculation standards that are available is then given with a brief description of their possible place in a rigorous system for ensuring that building designs are based on accurate, validated thermal performance values for the structures from which the energy performance is calculated.

Suggested Citation

  • Williams, Ray, 2015. "Demonstrating thermal performance: The role and challenges of testing methodologies," Journal of Building Survey, Appraisal & Valuation, Henry Stewart Publications, vol. 4(2), pages 110-118, October.
    • Handle: RePEc:aza:jbsav0:y:2015:v:4:i:2:p:110-118
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    More about this item

    Keywords

    building energy; performance gap; thermal performance measurement; measurement standards for building materials and structures;
    All these keywords.

    JEL classification:

    • R3 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Real Estate Markets, Spatial Production Analysis, and Firm Location

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