Evaluation of the required cooling capacity of the Cryocooler in the vacuum system

극저온냉동기 직냉형 진공시스템의 냉동부하 평가

  • 홍용주 (한국기계연구원, 고려대학교) ;
  • 박성제 (한국기계연구원, 고려대학교) ;
  • 김효봉 (한국기계연구원, 고려대학교) ;
  • 최영돈 (한국기계연구원, 고려대학교)
  • Published : 2003.02.01

Abstract

The cryostat or dewar have been widely used for making and maintaining cryogenic and vacuum environments. The thermal performances of such cryogenic vacuum system mainly depend on the radiation heat transfer between hot and cold surface The characteristics of radiation heat transfer are complicated, because amounts of heat transfer depend on view factor, emissivities, and areas of thermal elements. In this study, the analysis of the radiation heat transfer in the small cryogenic vacuum system was performed using the surface to surface radiation model for evaluation of the required cooling capacity of the cryocooler.

Keywords