一种新型常压低氧舱的研制

目的：研制一种常压低氧舱,用于低氧试验及入驻高原前的低氧预习服训练.方法：以制氮机为氮源,采用高浓度氮气稀释舱（室）内空气的办法,使舱内空气中的氧浓度从原来的20.9％左右稀释到所需的低氧浓度,创新性地变舱体漏气缺点为优点,建立舱体气体交换模型控制舱内的CO2浓度和维持舱内的O2浓度.结果：设计了大小为5 m×3 m×2.3 m的舱体,模拟海拔高度范围可达0～8 000 m,误差为±25 m.该舱体可满足10人同时进行低氧试验,也可满足4人在低氧状况下进行睡眠试验.舱内CO2体积分数可控制在3000×10-6以内.结论：该舱体设计安全、方便,有望在以后的高原低氧试验中发挥重要的作用.

Development of New Normobaric Hypoxic Chamber

Objective To develop a normobaric hypoxic chamber for hypoxia experiment and hypoxic acclimatization training before entering the plateau.Methods A nitrogen generator was used to lower the oxygen concentration from original 20.9％ to the desired concentration.A gas exchange model in the chamber was established to control the concentrations of CO2 and O2.Results The chamber had a size of 5 m×3 m×2.3 m,and the simulated altitudes from 0 m to 800 m with an error of 25 m or so,which could hold 10 persons for hypoxia experiment or 4 ones for sleep experiment in hypoxia condition with CO2 concentration not more than 3 000×10-6.Conclusion The normobaric hypoxic chamber is safe and convenient,and thus may be worth popularizing in plateau hypoxia experiment.