Periodic heat transfer through a hollow concrete slab: Optimum placement of the air gap

M.S. Sodha, A.K. Seth and S.C. Kaushik

Applied Energy, 1980, vol. 6, issue 2, 113-123

Abstract: This paper describes an investigation of the periodic heat transfer and optimum placement of the air gap in a hollow concrete slab subjected to solar radiation and atmospheric air on one side and in contact with air at a fixed temperature on the other. The heat conduction equation has been solved using the appropriate boundary conditions at the interfaces. It is found that the presence of an air gap considerably reduces the heat flux through the slab; further, for a given total thickness of concrete the best load levelling is achieved when the thickness of the outer layer of the concrete is least, consistent with structural considerations.

Date: 1980
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