Many physical phenomena are accompanied with low temperature. Cryogenic technologies have been applied in many fields. Regenerative cryocooler is one of the two mainstream cryocoolers. It mainly includes three configurations: Stirling cryocooler, GM cryocooler and pulse tube cryocooler. The first two configurations have been well studied. Their disadvantages are short lifetime or low efficiency. Pulse tube cryocooler possesses high reliability and high efficiency, and has attracted much attention. Thermoacoustic theory explains the working mechanism of regenerative cryocoolers from the viewpoint of interactions between the pressure wave and solid surface, gradually becoming a universal theoretical tool for regenerative refrigerators. It also gave birth to thermoacoustic cryocoolers. The so-called double-acting thermoacoustic cryocooler possesses high efficiency and high reliability. It may be a good choice for future applications. Now, quite a few hotspots have arisen in the study of regenerative cryocoolers. Various research has been carried out in this field in the hope of improving the configuration and expanding the applications of regenerative cryocoolers.

regenerative  /  cryogenic  /  cryocooler