关键词: 环境控制系统, 旅客机座舱, 热舒适, 仿真, 集总参数

Abstract: During cruise flight, airliner cabin environmental conditions are different from those in a building. The relative humidity and air density are lower than that found in a building. The low relative humidity results in a higher evaporation and heat loss. Besides, low air density implies a reduction of the convection heat loss. The combination of two factors can make cabin thermal comfort different from in a building. According to the status that conventional airliner environment control system can’t fully satisfy the cabin comfort requirement, a thermal comfort control system is put forward, which takes thermal comfort index PMV as the control parameter. A dynamic model for cabin thermal comfort is established by means of Lumped Parameter Method. And the dynamic character of thermal comfort is simulated, using PMV and temperature as control parameter respectively. The results show that thermal comfort control could satisfy thermal comfort better. Besides, higher cabin air temperature is required than a building to get thermal neutrality.

Key words: environment control system, airliner cabin, thermal comfort, simulation, lumped parameter