The environment temperature control method in the low pressure chamber

In order to study the environment temperature control method in the low pressure chamber, the numerical simulation and tests were conducted. The heat transfer process in the low pressure chamber was simulated by Fluent, and the radiation and heat conduction were considered to research the effect of the shroud opening hole, then the forced-convection was added to the simulation to research the effect of the forced-convection fan. No-load and on-load tests in the low pressure chamber were completed to research the effect of the test pressure, and the test pieces and toolings. The results show that, the shroud opening hole could make the uniformity of environment temperature worse, and the forced-convection fan being rationally designed could improve the characteristic of environment temperature, and the test pressure, the test pieces and toolings could affect the environment temperature. The environment temperature control method in the low pressure chamber should take all these factors into account, and can be applied to the development of the near space environment simulation equipment.