Mixed-Refrigerant Joule-Thompson Cryocooler Driven By R22/R12 Compressor
A reliable and low-cost miniature cryocooler for cooling infrared detectors, superconducting devices and other cryoelectronic instruments is a very challenging research topic in the cryogenic engineering field. Among different cryocoolers, a miniature, Joule-Thompson cryocooler with special mixtures is now a possible candidate for the mentioned applications due to recent developments. In this paper, the performance of a miniature mixed-refrigerant Joule-Thompson cryocooler operating around 80K and working at supply pressures of 1.0MPa to 2.5MPa has been studied experimentally. Our experimental results show that our mixed-refrigerant Joule-Thompson cooler can achieve 80K within the normal working pressure of R22 compressors and even down to the normal working pressure of R12 compressors. Thus , a 80K Joule-Thompson cryocooler driven by a R12 compressor with lower weight, smaller size and lower input electrical power can possibly be developed for cooling infrared detectors in the near future.
KeywordsHeat Exchanger Infrared Detector Suction Pressure Throttle Valve Thermodynamic Performance
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- 1.V. M. Brodianski, V.M. Yagodin, V.A. Nikolsky, and A.V. Ivantsov. The Use of Mixtures as the Working Gas in Throttle “Joule-Thompson Cryogenic Refrigerator, The 13th international refrigeration conference, New York, 1973Google Scholar
- 2.V.N. Alfeev, V.M. Brodyanski, V.M. Yagodin, V.A. Nikolsky, and A.V. Ivantsov. “Refrigerant for a Cryogenic Throttling Unit”, UK Patent 1336892(1973)Google Scholar
- 3.W.A. Little. Recent Developments in Joule-Thompson Cooling: Gases, Coolers, and Compressor, Proceedings of 5th International Cryocooler Conference, Monterey(1989), p.3Google Scholar
- 4.E.C. Luo, J.T. Tiang, Y. Zhou, V.V. Yakuba, and M.P. Tobko. Experimental Investigation of an Efficient Closed-Cycle, Mixed-refrigerant J-T Cooler, in “Cryocooler 9”, ed R.G. Ross, New York(1997),p.553Google Scholar
- 5.R.C. Lonsworth, M.J. Boiarski, and T.A. Klusmier. 80K Closed Cycle Throttle Refrigerator, in: “Cryocooler 8”, R.G. Ross, ed., Plenum Press, New York(1995), p.553Google Scholar