Mathematical modeling the heat balance of a solar pond device

Abstract

This article describes the method of accumulation and use of solar energy in the development of heat energy necessary for industrial processes and building heat supply in the southern climate of Uzbekistan. The thermal and technical calculation of the experimental solar pond built in the city of Karshi (size is 0.7m and 1.5m, height is 1.5m) is presented in the research paper. The energy storage efficiency of the solar pond layers was calculated analytically at 25% salt concentration of pond water, in values of 700 W/m2, 800 W/m2, 900 W/m2 and 1000 W/m2 of solar radiation, in values of 20 оС, 25 оС, 30 оС, 35 оС of ambient temperature in the non-stationary mode of solar pond device. Mathematical model of the time variation of layer temperatures was developed (on the basis of boundary conditions) during the propagation and absorption of solar radiation along the depth of the solar pond.