不同压力下通风服的除CO_2、除湿和散热  

Removal of CO 2, Moisture and Heat from Ventilated Suit under Different Pressures

作　　者：徐国林[1] 

机构地区：[1]航天医学工程研究所

出　　处：《航天医学与医学工程》1996年第4期251-255,共5页Space Medicine & Medical Engineering

摘　　要：推导和分析了通风服头盔内的ＣＯ２分压同通风压力、流率及ＣＯ２排出率的关系方程，通风流率同压力、除湿率和出口风湿的关系方程以及通风流率同压力和散热率的关系方程。分析结果表明，为保持同样的头盔内ＣＯ２分压所需的质量流率随压力的降低呈直线降低；除湿所需的质量流率也随压力的降低而降低；低压下的散热效率由于除湿效率的提高而提高。这些方程可用于估算通风服流率和头盔流率，并可用于计算机自动计算通风散热量和排湿量。The relative equation among CO 2 partial pressure in a helmet, ventilating flow, pressure and CO 2 output,the relative equation among ventilating flow, pressure, humidity and rate of moisture removal, and the relative equation among ventilating flow, pressure, humidity and rate of heat removal were derived and analyzed.Its demonstrated that: ventilating mass flow for a constant CO 2 partial pressure in the helmet decreases linearly as the pressure drops; the ventilating mass flow for removing a constant quantity of moisture decreases as pressure drops;the efficiency of heat removal increases as pressure drops due to the increase of moisture removal. The equations can be used for estimating ventilating flow in a ventilated suit and ventilating flow entering the helmet,and also for calculating automatically the quantities of moisture and heat removal by ventilation.

关 键 词：通风服 散热 湿度 二氧化碳清除 压力 

分 类 号：R852.81[医药卫生—航空、航天与航海医学]