Abstract

In order to ensure the comfort and health of buildings and resolve contradictory between improvement of thermal insulating function of buildings and reduce of thermosteresis and amount of basic building materials (namely save resourses), heat conduction equation was calculated. This mathematical physics equation which was calculated via finite difference method was attributed to inverse problem of gray distributed parameter systems. The economical model of optimum depth of thermal insulating layer was established. Finally, the optimum materials and depth was determined according to the two models.

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