适于飞行器闪蒸喷雾冷却的工质热特性分析  

Research on Features of Flash Evaporator Spray Cooling Apply to Aircraft

作　　者：巩萌萌[1] 王瑾 刘欣[1] 杨勇[1] Gong Meng-meng;Wang Jin;Liu Xin;Yang Yong(R&D Center,China Academy of Launch Vehicle Technology,Beijing,100076;Beijing Institute of Astronautical Systems Engineering,Beijing,100076)

机构地区：[1]中国运载火箭技术研究院研究发展中心,北京100076 [2]北京宇航系统工程研究所,北京100076

出　　处：《导弹与航天运载技术》2020年第5期80-85,共6页Missiles and Space Vehicles

摘　　要：为了解决飞行器瞬时高功率设备的散热难题,介绍了一种基于闪蒸技术的开式流体回路热控系统,利用闪蒸喷雾冷却高热流密度散热特性,实现狭小空间高热流密度散热;通过选择不同冷却工质,在真空条件下对闪蒸喷雾冷却系统进行了热控特性分析。仿真结果表明,将闪蒸喷雾冷却应用于飞行器热控系统能够有效地完成舱内设备的冷却需求,为飞行器热控系统设计提供了参考途径。In order to solve the heat dissipation problem of transient high-power equipment on aircraft,an opened fluid loop thermal control system based on flash evaporator technology with cryogen is introduced.The thermal control system can finish the heat rejection by utilizing the high heat flux characteristics of flash evaporator spray.Combined with the nozzle flow controlling,the opened fluid loop thermal control system can achieve proportional integral feedback regulation by controlling the mass flow of working fluid.Thermal control characteristics of flash spray cooling system are analyzed in which water as the working fluid,under vacuum conditions by establishing the numerical calculation model.This model considering the heat transfer relationship between different nodes and temperature change properties of each part during the node dividing process is developed.Based on the model,the temperature variation rule of the controlled object were performed by the numerical simulation and calculation.The simulation results show that,the flash evaporator spray cooling applied to spacecraft can effectively complete thermal control,this result provides the reference for the design of thermal control system in the contingency situation.

关 键 词：飞行器 热控系统 冷却工质 闪蒸喷雾 

分 类 号：V41[航空宇航科学与技术—航空宇航推进理论与工程]