Experimental Investigations on Pulsating Heat Pipe

Abstract

Thermal management of electronics is a contemporary issue in research field. Pulsating heat pipes are relatively new entrants to the family of heat pipes used for higher heat removal. Various experiments have been carried out in order to check the influence of filling ratio and input heat flux on the performance of the Closed Loop Pulsating Heat Pipe (CLPHP). The present paper deals with the experimental investigations on CLPHP. Water is used as working fluid. Inner diameter of the copper tube is 2.15 mm. Heat transfer mechanism is a natural convection in condenser section. Experiments are conducted with filling ratio as 40%, 50% and 60%. Heat input is varied as 10W, 20W, 30W, 40W and 50W. The results indicated better system performance with lower level of filling ratio and at higher heat input.