Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experimental Study on the Thermal Load of a Cryochamber with Radiation Shields

복사 차폐막이 설치된 극저온 용기의 열부하 특성에 관한 실험적 연구

  • 김영민 (국민대학교 대학원) ;
  • 강병하 (국민대학교 기계.자동차공학부) ;
  • 박성제 (한국기계연구원 에너지기계연구센터)
  • Published : 2008.01.10
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Abstract

Infrared (IR) detectors are widely used for such applications as thermoelastic stress analysis, medical diagnostics and temperature measurement. Infrared detectors commonly need to be refrigerated below 80 K, and thus a cooling system should be equipped together with the detector system. The cooling load, which should be removed by the cooling system to maintain the nominal operating temperature of the detector, critically depends on the insulation efficiency of the cryochamber housing the detector. Thermal load of a cryochamber is attributed to the conduction heat transfer through a cold finger, the gases conduction and radiation heat transfer. The thermal loads of an infrared detector cryochamber with a radiation shield are investigated experimentally in present study. Since the effect of radiation heat transfer on thermal loads is significant, radiation shields is installed in the cold finger part to protect heat input through radiation.

Keywords

References

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