载人航天器环控生保系统热网络的轻量化分析

目的 减轻载人航天器中环控生保系统的重量，方法采用网络分析原理，出环控生保系统中气、液流体回路所构成的流动和热网络，建立此网络中流动、传热及重复计算的物理模型和数学模型。从热平衡、热热及其系统重量关系式出发，计算出网络的结点热力学参数及网络系统重量，并对系统重量的一些影响因素进行了分析。结果 流动和热网络系统中存在最侍者这径，使系统重量最小。并且此最佳管径与流量关系密切；适当地提高通风温度可以降低

Analysis of Mass Optimization of Manned Spacecraft ECLSS Thermo-hydraulic Network

Objective To reduce the weight of manned spacecraft Environment Control and Life Support System(ECLSS). Method Based on network analysis theory,the flow and thermo hydraulic network composed of gas and liquid loops in manned spacecraft ECLSS was explored to reduce the weight of ECLSS.The physical models and mathematical models of flow,heat transfer and weight calculation in the network were established.The thermodynamic parameters and weight of the network were calculated on the bases of energy balance,heat transfer relation and the component weight relation.And influencing factors on the system weight were discussed. Result (1)There is an optimal pipe diameter in the system and the diameter is influenced by flow rate to a large extent;(2)The weight can be reduced by raising inlet temperature properly;(3)The best heat exchange layout makes the weight lightest. Conclusion The obtained results are of importance for reducing lauching weight of manned spacecraft.