感温蜡温控阀对航天器热控系统动态性能的影响

为了提高航天器热控系统的控温适应能力，提出了一种基于感温蜡温控阀的单相流体回路热控方法，利用感温蜡温控阀的全自动流量、温度比例调节特性实现温度控制。通过集总参数法建立感温蜡温控阀、热源载荷和空间辐射器等部件的数学模型，运用数值仿真方法分析该热控系统的温度动态特性。仿真结果表明，感温蜡温控阀的布局方式，以及感温蜡熔程、时间常数和温度延迟等热特性对单相流体回路热控系统温度动态性能有显著的影响，对基于感温蜡温控阀的单相流体回路优化设计提供了理论依据。

Influences of Thermostatic Valve with Sensitive Wax on Dynamic Performance of Spacecraft Thermal Control System

To improve the thermal control adaptability of spacecraft, a novel thermal control system has been proposed, a thermostatic valve with sensitive wax having the automatic proportional control characteristic of flow and temperature is applied in a single phase fluid loop thermal control system. Further, the mathematical model including thermostatic valve with sensitive wax, heat load, radiator and other components is built by using the lumped parameter method and calculated by using the numerical simulation method to analyze the temperature dynamic performance of the thermal control system. Finally, the simulation result shows that the layout of the thermostatic valve with sensitive wax and temperature response characteristics of sensitive wax such as phase change range, time constant and temperature delay have great effect on dynamic performance of the thermal control system. This conclusion can provide theoretical basis for the optimal design of single phase fluid loop based on thermostatic valve with sensitive wax.