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为减小载人航天器中环控生保系统质量 ,利用网络分析原理 ,系统地研究了由气、液流体回路所构成流动和热网络的质量组成特性。建立此网络流动、传热及质量计算的物理模型和数学模型 ,以其中辐射散热器表面平均温度为优化搜寻决策变量 ,优化计算网络系统质量。对系统质量的一些影响因素分析结果表明 ,以辐射散热器表面平均温度为决策变量优化计算网络系统质量的方法可以大大减小系统的质量 ;流动和热网络系统中存在最佳管径和最佳的热组件布局方式 ,对应系统质量最小。研究表明 ,全面考虑各因素与网络系统质量之间的密切联系 ,求得最佳值后 ,能使系统总质量最小
In order to reduce the quality of the environmental protection system in manned spacecraft, the mass and composition characteristics of flow and heat network composed of gas and liquid fluid circuits are systematically studied by using the principle of network analysis. The physical model and mathematical model of flow, heat transfer and mass calculation of the network are established. The average surface temperature of the radiator is used as an optimal search decision variable to optimize the network system quality. The results of some influencing factors on the quality of the system show that the quality of the system can be greatly reduced by using the average surface temperature of the radiating radiator as the decision variable to optimize the quality of the network system. The optimal diameter and the optimal diameter of the flow and heat network system exist The hot component layout, the corresponding minimum system quality. The research shows that, after considering all the factors and the close relationship between the network system quality and the optimal value, the total system mass can be minimized