Optimum Design Condition of the Collins Cryocooler

Collins 내동기의 최적 설계조건

  • 이상원 (영남대학교 대학원, 삼립산업주식회사) ;
  • 김수연 (영남대학교 공대 기계셜계학과) ;
  • 정평석 (영남대학교 공대 기계공학과)
  • Published : 1992.08.01

Abstract

The Collins cryocooler is numerically analysed with the optimization technique, and the optimum operating and design conditions are searched. This paper shows that liquefied helium quantity has an external maximum w.r.t. the total mass flow rate, the mass flow rates through expander and the capacities of heat exchangers. The liquefied helium quantity increases as the compressor exit pressure of the cryocooler does. The maximum quantity of liquefied helium and the maximum coefficient of performance have been found to exist in extremum, depending on the ratios of each heat exchanger capicities to the total one. At the optimum condition, the capacity of heat exchanger in high temperature region is larger than that in low temperature region.

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