SET Proceedings 2978-4387 Caravel Press 10.65582/set.2005.101 2005.101 Temperature Characteristics of Cascade Refrigeration System by Adjusting Compressor Inlet Pressure KimYeong Geun RahadiyanLubi KimBo Han JeongHyo Min ChungHan Shik Graduate School, Dept. of Mechanical and Precision Engineering, Gyeongsang National University, Tongyeong, KOREA School of Mechanical and Aerospace Engineering, Gyeongsang National University, Tongyeong, KOREA 23092005 4 1 978-7-112-07718-2 455 459 23 September 2005 © 2005 Copyright WSSET 2005

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.

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