In situ assessment of the fabric and energy performance of five conventional and non-conventional wall systems using comparative coheating tests

Latif, Eshrar ORCID: https://orcid.org/0000-0003-3982-6929, Lawrence, Mike, Shea, Andy and Walker, Pete 2016. In situ assessment of the fabric and energy performance of five conventional and non-conventional wall systems using comparative coheating tests. Building and Environment 109 , pp. 68-81. 10.1016/j.buildenv.2016.09.017

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Abstract

Comparative coheating tests have been carried out in five test buildings with walls constructed of Concrete Block Masonry and timber framed Hemp-lime composite, Polyisocyanurate (PIR), Wood Fibre and Mineral Wool. Five different methods of determining heat loss coefficient (HLC) were applied during the data analysis. While some variability in HLC values was observed between the different forms of construction, the hierarchy of HLC values among the test buildings were consistent, with the Concrete Block Masonry exhibiting the highest and Wood Fibre test building exhibiting the lowest HLC values. Except for the Concrete Block Masonry, there was good agreement between the calculated HLC values and those derived by applying the method 5 where the analysis incorporated both the effects of solar radiation and thermal mass. The in-situ U-value for the Concrete Block wall, determined by the average method, was 32.8% higher than its design value, whilst the other wall systems showed marginally lower U-values than their corresponding design U-values.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Architecture
Subjects:	N Fine Arts > NA Architecture T Technology > TD Environmental technology. Sanitary engineering
Uncontrolled Keywords:	Coheating test; U-value; In-situ test; Bio-based insulation materials; Hemp-lime; Wood fibre insulation; Thermal conductivity
Publisher:	Elsevier
ISSN:	0360-1323
Date of First Compliant Deposit:	17 November 2016
Date of Acceptance:	13 September 2016
Last Modified:	15 Nov 2024 14:00
URI:	https://orca.cardiff.ac.uk/id/eprint/94640

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