Analytical evaluation of a solar energy sand collector with and without moveable insulation

M. S. Sodha, N. K. Bansal, Shiv Singh and S. S. Bharadwaj

Applied Energy, 1982, vol. 11, issue 4, 289-305

Abstract: An analysis of a solar energy collector consisting of a network of pipes buried in a mass of sand, the top surface of which is fixed, blackened and glazed, is presented. A theoretical model has been developed to take into account the effect of covering the system with insulation during off-sunshine hours. To study the system quantitatively, numerical calculations have been performed for the heat flux taken away by the flowing fluid through the pipes corresponding to a typical winter's day in New Delhi--i.e. the 11th of January, 1974. The effect of various parameters on the efficiency of the system has been studied.

Date: 1982
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