DESIGN AND FABRICATION OF A LOOP HEAT PIPE USING ACTONE AS WORKING FLUID

The growth and improvement of thermal heat transfer used in Engineering applications plays a beneficial role in recent days. Among these heat transfer devices such as heat pipes which are widely used in the fields of electronics, mechanical, refrigeration and air-conditioning, space crafts, boilers and so on are acting as a remedy to cool the devices which generates more heat transfer. Study about the thermal performance of any device working fluid, filling ratio, specific heat, thermal conductivity, material compatibility proves to be vital sources. This paper mainly highlights about the design and fabrication of heat pipe known as loop heat pipe and experimental investigation using traditional working fluid acetone to determine the heat transfer coefficient. Using acetone as working fluid the tthermal resistance at minimum heat input is 1.1 oC/w, and when heat input increased to 60watt, thermal resistance decreased to 0.2 oC/w. The heat pipe orientation and heat input are one of the parameters have significant effects on the thermal performance of the loop heat pipe. The results from the above investigation concludes that acetone is suitable working fluid to perform the thermal heat transfer operations, helps to transfer the heat and cool the devices.