Pulse Tube Refrigeration–A New Type of Cryocooler

摘要: A variation of the Stirling cryocooler, known as a pulse tube refrigerator, requires only one moving part - pressure wave generator at room temperature. The cryocooler in addition displacer low temperatures to cause phase shift between and mass flow rate that leads refrigeration effect. This paper generalizes cycle shows how instantaneous heat transfer or through an orifice can similar without displacer. Temperatures 60 K have been achieved one-stage device where is used for shifting. mechanism shifting does not yield temperature, but it semireversible was by Wheatley convert energy acoustic energy, which turn drove thermoacoustic refrigerator with no parts. compares various refrigerators using newly developed enthalpy model. Some generalizations these concepts systems other than gas are made.