80 K Closed-Cycle Throttle Refrigerator
A closed-cycle throttle refrigerator has been developed which uses unique refrigerant mixtures and a single stage, oil-lubricated compressor to produce refrigeration at 80 K. This relatively simple system has good efficiency and low levels of vibration and noise. It should find many applications in commercial and research devices because of the versatility of distributing the circulating cold stream. Reliability should be very good because the compressor is the only active mechanical component.
This paper describes the first commercial refrigerator of this type that has been developed and its performance characteristics.
KeywordsHeat Load Throttle Valve Enthalpy Difference Mixed Refrigerant Valve Setting
Unable to display preview. Download preview PDF.
- 2.Missmer. D. J., “Self-Balancing, Low Temperature Refrigeration System”, U.S. Patent 3,768,273 (October 1973).Google Scholar
- 3.Alfeev, V. N.; V. M. Brodyanski; V. ML Yagodin, V. A. Nikolsky, and A. V. Ivantsov, “Refrigerant for a Cryogenic Throttling Unit”, UK Patent 1,336,892 (November 1973).Google Scholar
- 4.Little, W. A., “Recent Developments in Joule-Thomson Cooling: Gases, Coolers and Compressors”, Proc. of the International Cryocoolers Conference / Monterey, CA (1988).Google Scholar
- 5.Kuo, D. T., “Linear Compressor for JT Cryocooler”, Proceedings of the 7th International Cryocooler Conference / Santa Fe. NM (1992).Google Scholar
- 6.Landa, Y. I., Kelarev, L. G., Dengin, V. G., and Abakumov, L. G., “The Self-Regulating Effect Used in Joule-Thomson Microcryogenic Systems”, Proceedings of ICEC 14/ Kiev, Ukraine (1992).Google Scholar
- 7.Longsworth, R. C. and Sloan, R. B, “Experience with Displex GM-Type Refrigerators on Magnetic Resonance Imaging Cryostats”, to be published in Cryogenics, Buttcrworth-Heinemann. Ltd / London (1994).Google Scholar