金属氢化物冷源传热传质分析

为了验证冷源系统是否能满足出舱航天服的需要，本文针对一套开放式金属氢化物冷源系统，建立数学模型，对其制冷和再生阶段的传热传质过程进行了分析。研究结果表明，金属氢化物热泵能够满足宇航员出舱活动中的散热要求，其体积与水升化器相当，质量损失小，并且能够通过控制反应床的压力调节出口水温，可控性良好，而在返回舱内后，调节冷却水流量，反应压比，可以使氢化物在30min内再生。

Heat and mass transfer analysis of a metal hydride heat sink for EVA spacesuit

In order to demonstrate the feasibility of a metal hydride heat sink for EVA spacesuit,a heat and mass transfer model is established.The numerical calculations show that a metal hydride pump system with comparable size as water sublimator and less mass loss can satisfy the cooling requirement of the astronaut during EVA process,and the temperature can be regulated by controlling the pressure of the hydride bed.The calculations also show that the system can be regenerated within 30 minutes by regulating the flow of cooling water and pressure ratio.