Heat Loss From High Temperature Ponds

Abstract

Heat loss from high temperature ponds is of interest for several reasons including to calculate heat fluxes for natural features or to determine cooling rates for engineering purposes, such as scaling prevention or to keep within material temperature ratings. However, most published data and correlations relate to moderate temperature ponds developed for power station cooling ponds or for spas and bathing pools. In this paper correlations for determining the heat loss from such cooling ponds and bathing pools are presented. The principles, important parameters and the differences from high temperature ponds are discussed. At moderate temperatures, environmental factors such as air temperature and humidity, solar radiation and particularly wind speed are very important. At higher temperatures the cooling rates are much greater and these factors become less significant. Experimental data from several high temperature ponds and cooling channels are compared. Cooling mechanisms are discussed. A correlation for high temperature ponds is suggested.