Experimental Approach of Natural Convection Heat Transfer in Vertical Channel with Horizontal Heated Plate at Small Height Ratio

The thermal problems of most electronic components have been solved in recent year. Passive cooling of electronic component by Free convection heat transfer has major advantage of no vibration, least expensive and most authentic method of heat rejection. In many numerical and experimental works, heat source location is studied, especially with two or more sources on a vertical wall. The parameters frequently considered are: the Rayleigh number, the distance between heat sources. In this work two experiments were conducted. viz. natural convection in a horizontal plate and natural convection in a vertical channel with single heat source. The experimental setup has been designed and fabricated. In the first case, Experimentally and Numerically the convective heat transfer coefficient were calculated and compared with the value available from correlation and found to be in good agreement. In the second case, Experimentally and Numerically, heat transfer coefficient were calculated at small height ratio and to determine the optimum location of heat source in vertical channel