Abstract: A new type of artificial refrigeration system is proposed based on engineering thermodynamics and heat transfer theory, it combined with the actual situation of underground mine.The cooling system consists of a set of air-compression refrigeration device and many heat exchanger hydrations.There is an air pipe in the hydration in serpentine way, and air flows in the pipe, with other cooling device to complete the work cycle.Surrounding rock covered by a layer of thermal insulation materials, and the heat exchanger hydrations installed on the top of this layer of insulation material.The system not only reduces the airflow temperature through convective heat transfer between underground airflow and the heat exchanger hydrations, but also effective barrier surrounding rock heat.Change radioactive heat transfer between the high-temperature surrounding rock and the human bodies into radioactive heat transfer between the low temperature heat exchanger hydrations and the human bodies.Therefore, the cooling effect is good.Refrigerant air itself is cheap and non-toxic.

Key words: Thermal insulation materials, Heat exchanger hydration, Air-compression refrigeration, Heat damage