Optimising the thickness of thermal insulant to be used in the walls and flat roof of a building

V.C. Deeble and S.D. Probert

Applied Energy, 1986, vol. 25, issue 4, 299-308

Abstract: A response-factor computer program has been developed and used to perform the optimisation of the insulant thickness applied to any chosen surface, and in particular to the walls and roof of a building. The program estimates the building's annual energy consumption: it is based upon an hourly-load response-factor method, and possesses the sensitivity to determine the effects of small percentage variations in the values of the building's design parameters. The program also includes costing routines that enable the optimisation (of the building's design) based upon lifetime average owning costs. The cost components of the building's ownership, i.e. those of the building fabric and the annual energy consumption, are considered with respect to financial variables such as fuel-cost escalation rate, the expected life of the building, and the cost of loan funds used to finance the initial purchase of the building.

Date: 1986
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