高海拔地区睡眠环境局部供氧方法及其富氧效果分析
Local oxygen supply method and oxygen enrichment effect in sleeping environment at high altitudes
摘要：
高海拔地区缺氧环境下人体处于低水平氧合状态，由此引发的睡眠障碍等问题严重影响生命健康和工作质量。基于此，研究提出睡眠环境局部弥散供氧方法。通过数值模拟计算与实验验证相结合的方法，揭示了局部供氧条件下人体吸入区氧气浓度的动态变化规律，根据二氧化碳浓度、吹风感等指标剖析了局部风环境的舒适水平。结果表明：采用局部弥散供氧方法，由供氧口到吸入区过程中氧气浓度衰减较小，富氧效果稳定，同时氧气射流有效降低了吸入区的二氧化碳浓度；出口风速在0.20～0.30 m/s范围内时，面部舒适风速比最高，且吹风感低于10%。
Abstract：
The human body is in a low-level oxygenation state under hypoxic environment at high altitudes, and the resulting sleep disorders and other problems seriously affect health and work quality. Therefore, the study proposes a method of local diffuse oxygen supply. Through the method combined numerical simulation calculation with experimental verification, the dynamic change law of oxygen concentration in the inhaled area of human body under the condition of local oxygen supply is revealed, and the comfort level of local wind environment is analysed according to the index of carbon dioxide concentration and blowing sensation. The results show that the oxygen concentration attenuation from the oxygen supply port to the inhalation area is small, the oxygen enrichment effect is stable, and the oxygen jet effectively reduces the carbon dioxide concentration in the inhalation zone. When the outlet wind speed is in the range of 0.20 m/s to 0.30 m/s, the facial-area speed ratio is the highest, and the draft risk is less than 10%.
Keywords:highaltitude;sleepingenvironment;localdiffuseoxygensupply;oxygenenrichmenteffect;oxygenconcentration;draftrisk;inhalationzone