EXPERIMENTS ON FREE CONVECTION HEAT TRANSFER TO WATER IN RECTANGULAR VERTICAL GAPS OPEN AT THE UPPER SIDE

Abstract

Experiments have been conducted to study the effect of the gap width on the rate of heat transfer by free convection to water in a rectangular gap between parallel, and relatively short plates open at the upper side.The results show that heat transfer decreases and is predominant whilst the negligible.They are presented in of the Nusselt number on as the width of the gap decreases the rate of for very small widths conductive heat transfer free convection heat transfer becomes almost graphical form indicating the interdependence the product of Prandtl and Garshof number.