Abstract
The accurate knowledge of the thermal performance of massive buildings is important in solar design. Considering vertical homogeneous walls, initial and boundary data can be fitted by low-order polynomials. Under these assumption for the driving functions, analytical solutions are given for the one-dimensional heat equation that gives the wall temperature. Stored energy is also obtained. The formulae can be programmed in microcomputers or, in certain cases, in hand-held computers, this possibility being useful for field analysis. Two sets of data obtained in a test module are compared with model predictions for a preliminary validation.
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