Study on an environmental simulation system of low/high temperature for great space

摘要

An environmental simulation system of low/high temperature for great space that is for a function test on its unfolding structure of some aerials is designed based on air refrigeration principle. According to its practical run at chamber temperature of -70°C, its main parts such as driers, turbines, environmental chamber are investigated. The experiment results show that it is viable to adopting refrigeration way of air turbine for an environmental system of great space simulating low/high temperature. It is not only fulfilled with their temperature demand during those experiments, but also their humidity demand. The subsystem of driers works well and matches with its regeneration, which the wave of dew-point temperature reduces during its switch stage. Meanwhile, the energy is saved. The air turbine could adjust its cooling capacity by itself according to load changes. The pressure of environmental chamber keeps to be about 30～100Pa, so the whole system could run safely, stably and reliably.