航天器环境工程2024，Vol.41Issue(2)：195-203,9.DOI:10.12126/see.2023080
负压环境对喷雾冷却传热性能影响实验研究
Experimental study on the influence of negative pressure environment on heat transfer performance of spray cooling
摘要
Abstract
In order to study the heat transfer performance of the spray cooling system under negative pressure environment,a set of closed spray cooling system with water as the working medium was built.The heat flux,heat transfer coefficient,and temperature of the cooling surface,which characterize the heat transfer capability of the system under different pressures,were calculated and tested.The results show that,when the spray flow rate is 0.45 L/min,both heat flux and heat transfer coefficient increase with the decrease of the pressure in the spray chamber.When the pressure in chamber drops to 20 kPa,the heat transfer coefficient increases by 95.2%compared with that at atmospheric pressure.However,when the spray flow rate comes to 0.25 L/min,both heat flux and heat transfer coefficient first increase and then decrease with the decrease of the pressure in the spray chamber.As the heating power increases from 100 W to 1200 W,both heat flux and heat transfer coefficient increase significantly with the decrease of chamber pressure,whereas the applicable thermal conditions gradually narrow down.The surface temperature uniformity in low-pressure environments is worse than that in atmospheric environments.The proposed research may provide a reference for the application of spray cooling technology on spacecraft.关键词
喷雾冷却/负压环境/传热性能/实验研究/温度均匀性Key words
spray cooling/negative pressure environment/heat transfer performance/experimental study/temperature uniformity分类
通用工业技术引用本文复制引用
黄龙,王雨娇..负压环境对喷雾冷却传热性能影响实验研究[J].航天器环境工程,2024,41(2):195-203,9.基金项目
江苏省高等学校基础科学(自然科学)研究面上项目(编号:22KJD580001) （自然科学）
江苏海事职业技术学院科技创新基金项目 （）
