一种应用在航天探测器上的二氧化碳两相回路热控系统冷凝器的设计优化

阿尔法磁谱仪中的轨迹探测器是探测空间反物质的核心探测器,它工作于由超流液氦冷却的超导磁体的中心,其正常运作需要体积小、散热及温控能力强的热控系统的支持,以应对国际空间站上复杂的太空热流环境及真空、微重力等因素.介绍了利用SINDA/FLUINT模拟方法,对轨迹探测器的热控系统冷凝器进行设计优化.

Design Optimization of Condensers in a CO2 Two-Phase Thermal Control System for Space Detector Application

The silicon Tracker,a charge particle core detector in the Alpha Magneto-spectrometer, requires a cooling system to provide a working condition.This cooling system must be small in size, strong for its cooling ability and temperature control precision,even in the complex thermal,and microgravity environments on the international space station.In this paper,the attempt of design optimization of the condenser in the CO_2 two-phase thermal control system for such purpose is introduced,by employing thermal simulation analysis with SINDA/FLUINT.Because of the specific radiator,different design of the configurations of condenser inlet are investigated,by contacting the inlet at 1st,2nd,5th heat pipe and out of all heat pipes on the radiator.The result shows that with different configurations,the inlet part will have different effect on the heat transfer part of the condenser,which will cause the outlet temperature of the condenser different.It also tells that contacting the inlet at the 2nd heat pipes shows a best result for either reducing the anti-freezing power in cold case or guaranteeing enough subcooling of the pump inlet in the hot case.