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Title: First evidence for the reliability of building co-heating tests
Authors: Jack, Richard
Loveday, Dennis L.
Allinson, David
Lomas, Kevin J.
Keywords: Co-heating
Energy performance
Heat transfer
Heat-transfer coefficient
Performance gap
Performance assessment
Issue Date: 2017
Publisher: Taylor & Francis © The Authors
Citation: JACK, R. ... et al, 2017. First evidence for the reliability of building co-heating tests. Building Research & Information, 46 (4), pp.383-401.
Abstract: This paper provides powerful evidence empirically demonstrating for the first time the reliability of the co-heating test. The test is widely used throughout Europe to measure the total heat transfer through the fabric of buildings and to calculate the heat-transfer coefficient (HTC; units W/K). A reliable test is essential to address the ‘performance gap’, where in-use energy performance is consistently, and often substantially, poorer than predicted. The co-heating test could meet this need, but its reliability requires confirmation. Seven teams independently conducted co-heating tests on the same detached house near Watford, UK. Despite differences in the weather and in the experimental and analytical approaches, the teams’ final reported HTC measurements were within ±10% of the mean. With further standardization it is likely to be possible to improve upon this reproducibility. Furthermore, uncertainty analysis based upon a 95% confidence interval resulted in an estimated uncertainty in HTC measurements of ±8%. This research addresses persistent doubts about the reliability of the co-heating test. Avenues to further improvement of the test are discussed. This work helps to enable the test’s wider adoption as a component of the regulatory process and thus improvements to standards of house construction.
Description: This is an Open Access Article. It is published by Taylor & Francis under the Creative Commons Attribution 4.0 International Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/
Sponsor: This analysis was conducted as part of a doctoral research project pursued within the London–Loughborough EPSRC Centre for Doctoral Training in Energy Demand. Engineering and Physical Sciences Research Council (EPSRC) funding for the Centre is gratefully acknowledged [grant number EP/H009612/1].
Version: Published
DOI: 10.1080/09613218.2017.1299523
URI: https://dspace.lboro.ac.uk/2134/24773
Publisher Link: http://dx.doi.org/10.1080/09613218.2017.1299523
ISSN: 0961-3218
Appears in Collections:Published Articles (Architecture, Building and Civil Engineering)

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