Rhydwen, Ranyl and Tucker, Simon and Butler, Arthur and Wijeyesekera, D.Chitral (2011) ‘An initial report into thermal performance of hemp and lime wall sections in the wise building at CAT’, Advances in Computing and Technology. University of East London, London, January 2011. Lond: University of East London, School of Architecture Computing and Engineering.
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Hemp and binder (e.g. Lime) is an insulating wall matrix formed around a timber frame. It has multiple environmental benefits including sequestering carbon dioxide from the atmosphere into a building‟s walls and is thus of interest in the current climate situation. However the thermal performance of the matrix when evaluated using the steady state thermal conductivity (i.e. rate of heat transfer) is not as effective for the same thickness as other insulations. The world however is dynamic and in the Haverhill Housing Project monitored by the Building Research Establishment (UK) two hemp and lime houses, despite having a worse steady state thermal performance on paper, significantly outperformed comparative standard houses (BRE 2002, 2003). The reasons for this unexpected performance are not clarified although the heat storage capacity and the moisture handling ability of the matrix are possibilit ies. Hemp and binder matrix has been shown to have considerable moisture handling and heat storage capabilities but how or whether these improve thermal performance is not clear. All the tests reported so far have been on the same binder yet there are many potential binders and each will change the properties of the matrix and each has a different environmental legacy. To further clarify the in-building performance and to compare a range of binders, 5 different binder test wall sections in the Welsh Institute of Sustainable Education building at the Centre of Alternative Technology are being extensively monitored for heat flux, temperature and moisture movements. This paper is an initial report of this experiment.
|Item Type:||Conference or Event Item (Paper)|
|Additional Information:||Citation: Rhydwen, R., Tucker, S., Butler, A. and Wijesekera, C., (2011)"An initial report into thermal performance of hemp and lime wall sections in the wise building at CAT" Advances in Computing and Technology, University of East London, January 2011, 52-59.|
|Divisions:||Schools > Architecture Computing and Engineering, School of|
|Depositing User:||Mr Stephen Grace|
|Date Deposited:||28 Mar 2012 14:40|
|Last Modified:||31 Oct 2012 14:30|
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