강병하 이정훈 김호영 2024-01-21T06:12:41Z 2024-01-21T06:12:41Z 2021-09-06 2004-10 1229-6422 https://pubs.kist.re.kr/handle/201004/137174 Infrared (IR) detectors are widely used for many applications, such as temperature measurement, intruder and fire detection, robotics and industrial equipment, thermoelstic stress analysis, medical diagnostics, and chemical analysis. Quantum 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 analysis of cryochamber includes the conduction heat transfer through a cold well, the gases conduction and gas outgassing, as well as radiation heat transfer. The transient cooling characteristics of an infrared detector cryochamber are investigated experimentally in the present study. The transient cooling load increases as the gas pressure is increased. Gas pressure becomes significant as the cooling process proceeds. Cool down time is also increased as the gas pressure is increased. It is also found that natural convection effects on cool down time become significant when the gas pressure is increased. 대한설비공학회 적외선 센서용 극저온 용기의 냉각특성에 관한 실험적 연구 An Experimental Study on the Cooling Characteristics of an Infrared Detector Cryochamber Article 2 설비공학 논문집, v.16, no.10, pp.889 - 894 설비공학 논문집 16 10 889 894 kci ART000929786 극저온 용기 적외선 센서 과도열전달 냉각시간 Cryochamber IR sensor Transient heat transfer Cool down time Cryochamber IR sensor Transient heat transfer Cool down time