Semiconductor refrigerationtechnology has developed rapidly, at present, domestic semiconductor refrigeration technology has also made great progress, has developed a double inner cycle semiconductor cold storage heat exchanger, it and semiconductor energy elements, heat dissipation system constitute the energy conversion system. This kind of heat exchanger can be conveniently used in refrigerators, air conditioners, and other refrigeration products. It is a green environmental protection product to replace mechanical compression pumps and freon refrigerants. This technology should be in the leading position in the high-power semiconductor refrigeration composite material technology. It is also widely used in the submarine industry.