人体呼吸道热湿耦合传递过程分析

Analysis of Hot-wet Coupling Transmission Process of Human Respiratory Tract

环境的温湿度会影响人体呼吸道的热湿传递,在低湿环境中呼吸道黏膜会因缺水变得干燥。为了探究人体呼吸道热湿传递与环境参数的关系,本研究基于热湿平衡分析,计算人体呼吸过程中呼吸道壁面与空气气流的热湿传递量。结果表明:呼吸道热传递和湿传递都会受环境参数影响,热湿传递量随着温度和相对湿度升高而降低;当海拔越高时热湿传递量越大,呼吸道热湿传递量在海拔1000m以下的平原地区都比较接近,而随着海拔上升至3000m以上热湿传递量明显增加;相对于平原地区,在拉萨地区呼吸道一天的热湿传递增加约20%~30%。

The temperature and humidity of the environment will affect the heat and moisture transfer of the human respiratory tract, and the respiratory mucosa will become dry due to lack of water in a low-humidity environment. In order to explore the relationship between human respiratory heat and moisture transfer and environmental parameters, this paper calculates the heat and moisture transfer between the respiratory tract wall and the air flow based on the analysis of the heat and moisture balance, The results show that heat and moisture transfer in the respiratory tract will be affected by environmental parameters, and the heat and moisture transfer will decrease with the increase of temperature or relative humidity;the higher the altitude, the greater the heat and moisture transfer, and the respiratory tract heat and moisture transfer in plain areas below 1000 m above sea level are relatively close,and as the altitude increases above 3000 m, the heat and moisture transfer has increased significantly;compared to the plain area,the day-to-day heat and moisture transfer of the respiratory tract in the Lhasa has increased by about 20% to 30%.