Analysis on the Colder Regenerator of 4.2K G-M Refrigerator
The real gas properties of helium, especially the enthalpy change between 30K and 4.2K for the 2.0MPa helium is lower than that for the 0.6MPa helium, result in that the temperature distribution in the colder regenerator of a multistage 4.2K G-M refrigerator forms a plateau, which is measured, and also verified by a numerical calculation. Based on the calculation result, a picture of helium mass in the regenerator void is presented in this paper. According to the movement of the helium, a three-cycle assumption is suggested.
KeywordsExpansion Process Compression Process Admission Process Refrigeration Cycle Cold Chamber
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