Effect of Surface Temperature Measurement Method on Heat Transfer Characteristics of Spray Cooling Surface

Abstract

Spray cooling is an effective method for the cooling of electronic equipment. At present, the application of spray cooling technology in the heat dissipation of electronic devices has received more and more attention, especially in the heat dissipation of high-power electronic devices. Spray cooling technology atomizes the cooling working medium (water or air) into small droplets by spraying, forming and maintaining a very high temperature (usually 40 ° C ~70 ° C) under a certain pressure, so that the temperature of the working medium rises sharply to achieve heat dissipation [1]. At present, the research on the heat transfer characteristics of spray cooling surface mainly focuses on the analysis of its fl ow characteristics and heat transfer characteristics. Among them, surface temperature is an important parameter to characterize heat transfer performance, so it is very necessary and meaningful to study the influence of surface temperature on heat transfer characteristics of spray cooling [2]. Therefore, in this paper, two different measurement methods are used to study the changes of surface temperature and heat transfer system with spray pressure of combined surface under different power to obtain accurate and reliable surface temperature data.