Abstract
Flash spray cooling has demonstrated advantages in the thermal control of electronic device. In this study, a closed-loop flash spray cooling system was established using the working fluid R1336mzz to investigate the effects of spray flow rate, inlet temperature and spray chamber pressure on the heat transfer characteristics. The experimental results showed that there was an optimum flash spray flow rate making the heat transfer performance best, and the highest CHF of 349 W/cm2 can be achieved by the flow rate of 1.4 L/min. Higher inlet temperature greatly enhanced the heat transfer performance of flash spray cooling system. The maximum heat transfer coefficient of 48.2 °C was increased by 85.6% and 36.1% compared with that of 26.5 °C and 34.3 °C, respectively. The spray chamber pressure had an important effect on the heat transfer performance of flash spray cooling system. Lower spray chamber pressure corresponded to a lower saturation temperature and improved the atomization effect of the working fluid.
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