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Practice paper

Demonstrating thermal performance: The role and challenges of testing methodologies

Ray Williams
Journal of Building Survey, Appraisal & Valuation, 4 (2), 110-118 (2015)
https://doi.org/10.69554/PJNH6343

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.

Keywords: building energy; performance gap; thermal performance measurement; measurement standards for building materials and structures

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Citation

Williams, Ray (2015, October 1). Demonstrating thermal performance: The role and challenges of testing methodologies. In the Journal of Building Survey, Appraisal & Valuation, Volume 4, Issue 2. https://doi.org/10.69554/PJNH6343.

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cover image, Journal of Building Survey, Appraisal & Valuation
Journal of Building Survey, Appraisal & Valuation
Volume 4 / Issue 2
© Henry Stewart
Publications LLP

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