This paper present the development and testing of cascade refrigerator system for achieving super-low temperature condition. This experiment study effect of pressure in the second stage compressors inlet to the temperature distribution characteristics of the cascade refrigeration system. Compressor inlet pressure of low-pressure stage was tested in the vacuum condition and over-atmospheric pressure. Two different types of refrigerants are utilized for this system, R-22 is applied for the high stage, and R-23 for the low-pressure stage. The lowest temperature in the low-pressure evaporator, which can be achieved by this cascade refrigeration system, is down to −85 °C.
Method of Efficiency test, KS B 6366, 2002.6.20, Korea Standard Association, freezing chapter.
Proper form temperature condition of compressor for refrigerator, KS B 6266, 2001.9.15, Korea Standard Association
Method of Condensing unit examination, KS B 6333, 1992, Korea Standard Association
Guidance for Creation Pressure-Enthalpy about Various Refrigerants
Ohugyu, 1994, "Re-evaluation of Ammonia as a Refrigerant" air conditioning freezing engineering emperor 23 book No. 4, pp . 314~325 . (13) Namimu, 1995, "NON-CFC freezing machine development same native place" freezing mutual assistance technology August number, pp . 93~103 .
McLinden, M., 1998, NIST Thermodynamic Properties and Refrigerant Mixtures Database 23(REFPROP), Version 6.02, National Institute of Standards.
Chen,J.C., 1966, "A correlation for boiling heat transfer to saturated fluids in vertical flow", Heat Transfer Engineering, Vol.1, No.4, pp.32~37.
Shah,M.M., 1982, "Chart correlation for saturated boiling heattransfer equations and further study", ASHRAE Tran., Vol.88, pp. 185~196.
Gungor, K.E. and Winterton, H.S., 1986, "A general correlation for flow boiling in tubes and annuli", Int. J. Heat and Mass Transfer, Vol. 29, No. 3, pp. 351 ~ 358.
Jung, D.S, McLinden, M., Randermacher, R and Didion, D., 1989, "A study of flow boiling heat transfer with refrigerant mixtures", Int. J. Heat and Mass Transfer, Vol. 32, No. 9, pp. 1751 ~ 1764.
Kandlikar, S.G., 1990, "A general correlation for saturated two-phase flow boiling horizontal and vertical tubes", Trans. ASME, Vol. 112, pp. 219 ~ 228.
Oh, H-K, Katsuta, M. and Shibata, K. 1998, "Heat transfer characteristics of R-134a ina capillary tube heat exchanger", Proceedings of 11th IHTC. Vol. 6, pp. 131 ~ 136.
Dittus, F.W., and Boelter, L.M.K.,1930, University of California, Berkeley, Publications on Engineering, Vol. 2, pp. 443.
Lockhart, R.W. and Martnielli, R.C., 1945, "Proposed correlation of data for isothermal two-phase, two-component flow in pipes", Chem. Eng., Prog., 45-1, pp. 39 ~ 48.
Oh Hoo-Kyu, Park Ki-Won, Roh Geon-Sang, Hong Jin-Woo, Son Chang-Hyo, 2002, Evaporating heat transfer characteristics in small diameter tubes, Proceeding of Asian Conference on Refrigeration and Air Conditioning, Kobe, Japan, pp. 45 ~ 52.
How to cite this article
Kim, Y.G., Rahadiyan, L., Kim, B.H., Jeong, H.M. and Chung, H.S. (2005). 'Temperature Characteristics of Cascade Refrigeration System by Adjusting Compressor Inlet Pressure'. SET Proceedings, 4(1), pp. 455-459. https://doi.org/10.65582/set.2005.101