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为减小载人航天器热控、环控生保系统中并联热网络系统的质量 ,在一定的简化和假设的基础上 ,建立热网络流动与换热的物理和数学模型。以系统总换热面积最小为优化目标函数 ,用极值有理法求解 ,得到最佳冷媒流量分配率随各热组件效能的变化关系。热组件效能大 ,其冷媒流量分配率就大 ,效能小 ,则其流量分配率就小 ,且热组件的效能总小于其流量分配率。研究结果为航天器工程中并联热网络的轻量化设计提供了一些理论依据
In order to reduce the quality of parallel thermal network system in thermal control and environmental protection system of manned spacecraft, the physical and mathematical models of heat network heat transfer and heat transfer are established based on some simplifications and assumptions. Taking the minimum heat transfer area of the system as the objective function of optimization, the optimum objective function is solved by the extremum method, and the relationship between the optimal refrigerant flow rate and the efficiency of each thermal component is obtained. The efficiency of thermal components is large, the rate of distribution of the refrigerant flow is large, and the efficiency is small, then the traffic distribution rate is small, and the performance of the thermal components is always less than the traffic distribution rate. The results provide some theoretical basis for lightweight design of parallel thermal network in spacecraft engineering