低气压不同代谢率下人体显热换热系数的实验研究

Experimental Study on Human Body Heat Transfer Coefficient under Low Pressure and Different Metabolic Rate

空调已经逐步由舒适空调转向健康空调,由此推动了个性化送风的研究。研究的重点是人体与周围环境的热交换,而对换热系数尤其是低压下和不同代谢率下的换热系数研究较少。本文在理论研究的基础上,以暖体假人作为研究手段,利用高原环境模拟舱,研究不同压力、代谢率下人体各个部位辐射与对流换热特性。研究结果表明,压力与代谢率的改变对辐射换热的影响不大,但对对流换热系数影响较大,且对各部位的影响有明显差别。

Air conditioning has been gradually shifted from the comfort of air conditioning to health of air conditioning,thus promoting the research on personalized air supply. The study focuses on the heat exchange between the human body and the surrounding environment,while the heat transfer coefficient,especially under low pressure and different metabolic rate of heat transfer coefficient less. On the basis of theoretical research,this paper studies the radiation and convective heat transfer characteristics of different parts of human body under different pressures and different metabolic rates by means of thermal manikin. The results show that the change to pressure and metabolic rate has little effect on the radiant heat transfer,but it has a great influence on the convective heat transfer coefficient,and the influence on different parts is obviously different.