Heat transfer capacity of spray cooling under vibration environment
Spray cooling can meet the thermal management needs of electronic devices such as high-performance chips and power batteries,but the influence of spray parameters on heat transfer under vibration environment is still unclear.Therefore,a set of closed spray cooling test system was built,and the effects of spray flow rate and spray angle on the heat transfer performance of spray cooling under different vibration conditions were investigated by using low-boiling-point e-fluoride liquid HFE-649 as the cooling medium.The results show that the critical heat flow density(CHF)of spray cooling increases with the increase of frequency and flow rate,and the enhancement of CHF of spray cooling is most obvious under low-frequency large-amplitude condition,which is 18.8％higher than that of high-frequency low-amplitude condition.When the spray angle is 75°,it has the best heat transfer capacity under various vibration conditions.The correlation equation of heat transfer of spray cooling was fitted by using the dimensionless analysis method,and more than 95％of the experimental data points fell within the error range of±12％,which is a good fitting result and provides a theoretical reference for the application of spray cooling to the thermal management of batteries.
万方数据
维普
