Refrigerator industry ushered in major changes, compressor refrigeration or history

Refrigerator industry ushered in major changes, compressor refrigeration or history Nearly 100 years since the birth of modern refrigerators, refrigerators have been relying on compressors for refrigeration. However, this situation may fundamentally change. Recently, Cooltech Applications, a professional manufacturer in the field of magnetic refrigeration, has released the first commercial magnetic refrigeration system (magnetic refrigeration system for short: MRS), which means that magnetic refrigerators will soon be put into commercial use. The so-called magnetic refrigeration is a technology that uses the magnetocaloric effect for refrigeration. Its principle is that the magnetic material will release and absorb heat to the outside during the process of magnetization and demagnetization by the magnetic field. Traditional refrigerators usually need to add various chemical refrigerants, which is the most common fluoride. The shortcomings are obvious. It produces greenhouse gases, destroys the ozone layer, and is not environmentally friendly. Of course, high noise and high energy consumption are also common problems. The magnetic refrigeration system is based on the magnetocaloric effect, which refers to the phenomenon that the temperature of the ferromagnet or paramagnet changes with the strength of the magnetic field during the adiabatic process. When MRS applies and removes an external magnetic field in the material with the corresponding effect, the arrangement and randomization of the magnetic momentum causes the temperature change in the material, and then pumps the water coolant through this material, so as to transfer the heat inside the refrigerator to the outside air Effect.

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