Hot and humid working environments exist in civil engineering, exploration, shipping, and so on. Especially in mines and textile workplaces, the air humidity is usually close to saturation. Frontline workers perform physically demanding work, which will make the body sweat greatly and increase the occurrence of heat-related illnesses. The microenvironment under clothing can be improved by a ventilation cooling vest with pressurized air (denoted VCV), and the trunk skin temperature will be decreased. However, the amount of heat that a VCV removes from a working human body in hot and humid environments is unclear. In this study, human experiments were carried out, the ambient temperature was controlled at 30 °C, 32 °C or 34 °C, and the air humidity was 90%. The subjects wore a labor suit (denoted LS) or a VCV, running on a treadmill at 5 km/h or 7.5 km/h. The results showed that the total trunk heat loss was increased by 169–237%, and the cooling power of the VCV was between 79.5 and 97.6 W when wearing the VCV. However, the actual skin wettedness is often less than the calculated value, and the calculated cooling power should be considered the upper limit. The study indicated that the cooling capacity of the VCV increased as the ambient temperature and labor intensity increased, and the heat dissipation of the body also increased.

土木工程，勘探，运输等中存在高温和潮湿的工作环境。特别是在矿山和纺织品工作场所中，空气湿度通常接近饱和。一线工人进行体力劳动，这会使身体大汗淋漓，并增加了与热有关的疾病的发生。衣服下方的微环境可以通过使用压缩空气的通风降温背心（表示为VCV）来改善，从而降低躯干皮肤的温度。然而，在炎热和潮湿的环境中，VCV从工作的人体内释放的热量尚不清楚。在这项研究中，进行了人类实验，将环境温度控制在30°C，32°C或34°C，并且空气湿度为90％。受试者穿着工作服（表示为LS）或VCV，以5 km / h或7的速度在跑步机上跑步。5公里/小时 结果表明，当佩戴VCV时，主干总热量损失增加了169–237％，并且VCV的冷却功率在79.5至97.6 W之间。但是，实际皮肤湿润度通常小于计算值，因此应将计算出的冷却功率视为上限。研究表明，VCV的冷却能力随着环境温度和劳动强度的增加而增加，并且身体的散热也增加。