1205 An Experimental Study of Two-Phase Natural Circulation System Cooling a Pin Type Finned Heating Surface

Abstract

Heat generation from CPU of personal computer has increased, so more efficient cooling system is needed. This paper presents the result on performance of cooling system using two-phase natural circulation loop as a candidate for this purpose. Boiling on a finned surface that simulates CPU caused two-phase natural circulation. Results of boiling heat transfer showed higher value than Rohsenow-Clark correlation as the system pressure decreases. Also, this might be attributable to the effect of the finned surface. Possibility of cooling system by two-phase natural circulation loop was confirmed. By improving the condenser performances, the system can be applicable to the actual personal computer.