Abstract: In order to study the heat insulation performance of rescue capsule, the study analyzed the change of environment temperature after methane explosions, the basic mode of heat transfer and the structure characteristics of recue capsule. The study built a high temperature test room to determine heat transfer coefficient. A human-testing is performed to measure the heat production in refuge capsule. The quantitative research and improvement on refrigeration systems for rescue capsule were implemeted according to measured data from idle load rescue capsule and human-testing.