航天器工程2011，Vol.20Issue(3)：131-136,6.
电子设备射流送风冷却特性试验研究
Experimental Study on Characteristics of Cooling by Air Jet Impinging for Avionics
摘要
Abstract
Air jet impinging can provide enhanced cooling of avionics in pressurized module of manned spacecraft with many advantages, such as high simplicity and reliability, low system weight and high heat transfer coefficient.Heat transfer characteristics of impinging air jet for cooling two high-power avionics devices in China manned spacecraft pressurized module are investigated experimentally.The effects of air flow rate, orifice number and surface state on the avionics equilibrium temperature are analyzed.The equilibrium temperature of avionics with 315.8 W/m2 heat flux density can be maintained to lower than 50℃ by 0.4m3/min air jet impinging volumetric flow rate.The feasibility of cooling high-power avionics by air jet impinging is testified.The air jet impinging system pressure drop can be reduced effectively by increasing orifice numbers.The avionics work temperature can be reduced markedly by improving avionics surface emissivity,such as black anodization.关键词
载人航天器/电子设备/射流/通风/对流换热Key words
manned spacecraft/ avionics /jet impinging/ ventilation/ convective heat transfer分类
航空航天引用本文复制引用
孟繁孔,岳贤德,曹剑峰,满广龙..电子设备射流送风冷却特性试验研究[J].航天器工程,2011,20(3):131-136,6.基金项目
国家重大科技专项工程项目 （）
