Thermal Analysis of a Cryochamber for an Infrared Detector Considering a Radiation Shield

적외선 검출기용 극저온 챔버에서 복사 차폐막을 고려한 열해석

  • Kim Young-Min (Graduate School, Kookmin University) ;
  • Kang Byung-Ha (School of Mechanical & Automotive Engineering, Kookmin University)
  • 김영민 (국민대학교 대학원) ;
  • 강병하 (국민대학교 기계.자동차공학부)
  • Published : 2006.08.01

Abstract

The steady cooling characteristics of a cryochamber for infrared (IR) detector have been investigated analytically, considering radiation shields. The thermal modeling considers the conduction heat transfer through cold finger, the gaseous conduction due to out-gassing, and the radiation heat transfer. The cooling load of the cryochamber is obtained by using a fin equation. The results obtained indicate that the gaseous conduction plays an important role in determining the steady cooling load. The steady cooling load is increased as the gas pressure is increased. It is also found that the cooling load is substantially decreased with a radiation shield. The most thermal load of a cryochamber occurs through the cold finger.

Keywords

References

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