【摘要】 两相主动式热控系统是未来航天热控的发展方向之一,系统中冷凝器是散热的重要部件,其冷凝性能对热控系统仪器的正常工作至关重要。文章对CO2机械泵驱动两相航天热控系统冷凝器与辐射器之间的热导进行试验研究,在-20℃和15℃两个饱和温度不同热流及不同流量的工况下,测量热循环(-130～20℃)前后冷凝器与辐射器间的热导变化,发现冷凝器中的导热胶在经受热胀冷缩的极限条件后不改变其导热性能,冷凝器的可重复使用性良好。更多还原

【Abstract】 Two phase active thermal control system is one of the main trends for aerospace thermal system in the future. In an active thermal control system, condenser as heat sink is very crucial to electric equipments. In this paper, heat conductance of the tube-plate condenser used in CO2 Mechanically Pumped Two Phase Thermal Control System is studied to evaluate the condenser performance and the test saturated temperatures were found to be 15℃ and -20℃. Compared with the condenser conductance before thermal cycling (-130~20℃), it remained almost unchanged after thermal cycling, which means that the glue used to adhere tubes and condenser plates could stand the extreme thermal temperature without affecting the conductive characteristics.更多还原