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http://dx.doi.org/10.5916/jkosme.2009.33.8.1123

Analysis of Performance Characteristics of a Cascade Refrigeration System with Internal Heat Exchanger using Natural Refrigerants  

Son, Chang-Hyo (부경대학교 기계공학부)
Oh, Hoo-Kyu (부경대학교 냉동공조공학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.33, no.8, 2009 , pp. 1123-1128 More about this Journal
Abstract
In this paper, the cycle performance characteristics of a cascade refrigeration system with internal heat exchanger using natural refrigerants is presented to offer the basic design data for the operating parameters of the system. This system considered in this study is consisted of a high temperature cycle using a carbon dioxide(R744) and low temperature cycle using refrigerants such as R290, R1270, R600a and Ethane. The main results were summarized as follows : The COP of the cascade refrigeration system of R600a with internal heat exchanger is the highest grade in low temperature cycle using refrigerants such as R290, R1270, R600a and Ethane. The COP of the cascade refrigeration system with internal heat exchanger only in high temperature cycle is the highest value among three type cycle, such as only low temperature cycle, only high temperature cycle and all the cycle.
Keywords
Cascade refrigeration system; Internal heat exchanger; Performance Characteristics; Natural Refrigerant;
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