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Estimating the impact of reveals on the transmission heat transfer coefficient of internally insulated solid wall dwellings

Marincioni, V; Altamirano-Medina, H; May, N; Sanders, C; (2016) Estimating the impact of reveals on the transmission heat transfer coefficient of internally insulated solid wall dwellings. Energy and Buildings , 128 pp. 405-412. 10.1016/j.enbuild.2016.06.067. Green open access

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Abstract

Internal wall insulation as a retrofit measure could help to reduce energy use and greenhouse gas emissions in many of the 6 million solid wall buildings in the UK. However during retrofit, junctions that are hard to deal with are often left uninsulated, increasing heat loss and surface mould growth risk at thermal bridges. Furthermore the effect of junctions, insulated or uninsulated is not properly taken into account in commonly used assessments of heat loss. This paper presents a study on the impact of the junctions around openings, also called reveals, on the transmission heat transfer coefficient of internally insulated dwellings and a discussion on potential areas of improvement of common assessment tools for retrofit. Findings showed that reveals account for the majority of the transmission heat transfer coefficient at junctions, that thicker wall insulation is not necessarily advantageous from a heat loss perspective, and that the transmission heat transfer coefficient at junctions per unit area of exposed elements was often higher than the reference value used in the UK.

Type: Article
Title: Estimating the impact of reveals on the transmission heat transfer coefficient of internally insulated solid wall dwellings
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.enbuild.2016.06.067
Publisher version: http://dx.doi.org/10.1016/j.enbuild.2016.06.067
Language: English
Additional information: ©2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Keywords: Thermal bridges; Internal wall insulation; Retrofit
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/1522205
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