Study on Heat Transfer Performance of Flat Plate Pulsating Heat Pipe with Graphene Oxide at Low Heating Power

Abstract

Abstract Graphene oxide (GO) has high thermal conductivity and strong hydrophilicity which can enhance the heat transfer performance of the fluid. Standby heat transfer is a long-time, low-heat power and small heat area heat transfer, caused in electronic equipment. In this paper, the heat transfer performance of flat plate pulsating heat pipe (FPPHP) under the different concentrations of GO as working fluid is studied to solve the standby heat transfer and analyze the enhancement and the retardation of the GO to FPPHP. The FPPHP is made of aluminum, 2 tubes, with the concentration of GO, is 0.1%, 0.3%, 0.5%, a heating power range of 1∼10 W, and a filling rate (FR) is 30%. The results of the experiment indicate that under the condition of the concentration of 30% of GO, the FPPHP startup at 4 W and run stably at 6 W. When the heating power is 10 W, the wall temperature of evaporation is 89.75 °C, the thermal resistance is 1.18 °C/W.