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Performance of internal wall insulation systems - experimental test for the validation of a hygrothermal simulation tool

Marincioni, V; Altamirano, H; Ridley, I; (2014) Performance of internal wall insulation systems - experimental test for the validation of a hygrothermal simulation tool. In: Arfvidsson, J and Harderup, L and Kumlin, A and Rosencrantz, B, (eds.) NSB 2014: 10th Nordic Symposium on Building Physics: Full papers. (pp. pp. 119-126). Lund University: Lund, Sweden. Green open access

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Abstract

In the UK, transient models of heat, air and moisture transport (HAMT) are common tools used by building practitioners to better understand moisture movement within building elements and construction systems. Enforced by BS 5250:2011, hygrothermal simulations are also used for condensation risk analysis and to estimate the likelihood of mould growth and fabric decay. This paper describes the methodology applied in the validation of a hygrothermal-modelling tool used in the evaluation of internal wall insulation. Wall assemblies typically constructed for internal insulation were exposed to transient boundary conditions derived from vapour pressure profiles and their response to step changes and fluctuations were analysed. The wall assemblies were constructed using one wall substrate (aerated clay blocks and gypsum plaster) and eight commonly used internal insulation systems. Relative humidity and temperature levels measured at the interface between the wall substrate and each insulation system were used to assess the hygrothermal performance of each insulation system. As a result, the wall assemblies were clustered in three subgroups; dense capillaryactive insulation, lightweight vapour-permeable insulation and synthetic vapour-closed insulation, and the hygrothermal performance of the proposed clusters compared with the results provided by the simulation tool. It was found that simulated assemblies have similar hygrothermal performance as those monitored.

Type: Proceedings paper
Title: Performance of internal wall insulation systems - experimental test for the validation of a hygrothermal simulation tool
Event: NSB 2014: 10th Nordic Symposium on Building Physics, 15-19 June 2014, Lund, Sweden
Dates: 2014 - 2014
ISBN-13: 9789188722539
Open access status: An open access version is available from UCL Discovery
Publisher version: http://www.nsb2014.se/?page_id=1577
Language: English
Additional information: This is the published version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: internal wall insulation, hygrothermal simulation
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/1522507
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