摘要
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，研究由环控生保系统中气、液流体回路所构成的流动和热网络，建立此网络中流动、传热及重量计算的物理模型和数学模型。从热平衡、传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佳管径，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系统重量；网络系统中存在最佳的热组件布局方式，对应的系统重量最小。结论 这些规律对载人航天器环控生保系统轻量化具有重要参考意义。
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.
出处
《航天医学与医学工程》
CAS
CSCD
1999年第5期351-355,共5页
Space Medicine & Medical Engineering
关键词
载人航天器
环境控制
生命保障系统
轻量化
manned spacecraft
environmental control
life support systems
mass optimization
network analysis
flow
physical models
mathematical models Address reprint requests to:ZHANG Xin rong.Department of Engineering Mechanics,Tsinghua University,Beijin
