Study on Heat-moisture Treatment of Near Space Crew Capsule Based on Phase Change Material

Environment control system of the near-space capsule is of great importance to maintain a comfortable environment and working conditions for crew members as well as onboard equipments. Temperature and humidity, as two main parameters, are controlled by the phase change cool storage device in crew capsule. To improve the design of environment control system, a numerical study of the thermal environment based on a crew capsule suspending in the stratosphere was conducted in this paper. The main structure and thermodynamic parameters of the phase change cool storage device were calculated. Under the way of nozzle outlet air supply, a numerical modelling of the temperature and humidity distribution inside a crew capsule is performed. This research will contribute a better solution for an advanced environment control system design of crew capsules.