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This study investigates the precooling effects on the regenerator and pulse tube of Stirling-type pulse tube cryocoolers (SPTCs) operating at liquid-helium temperatures. The results indicate that while the regenerator shows significant improvements in efficiency with precooling, the effects on the pulse tube are relatively weak due to pressure-induced enthalpy flow. This research provides valuable insights into optimizing the performance of SPTCs for applications in space exploration and other fields requir

Author

sanjivrajput

Language

EN