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R-600a 및 R-134a를 공용으로 사용한 소형 냉동사이클의 성능 특성 최적화에 대한 실험적 연구An Experimental Study on the Optimization of the Performance Characteristics of a Refrigeration System Using R-600a and R-134a

Other Titles
An Experimental Study on the Optimization of the Performance Characteristics of a Refrigeration System Using R-600a and R-134a
Authors
장의성윤원재정현준정해원김용찬
Issue Date
2010
Publisher
대한설비공학회
Keywords
Household refrigerator(가정용 냉장고); R-600a(이소부탄); R-134a; COP(성능계수)
Citation
설비공학 논문집, v.22, no.5, pp.268 - 274
Indexed
KCI
Journal Title
설비공학 논문집
Volume
22
Number
5
Start Page
268
End Page
274
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/117713
ISSN
1229-6422
Abstract
ABSTRACT:Because both R-134a and R-600a are used as a refrigerant of a household refrigerator in the global market, the home-appliance industry needs an optimized cycle for both refrigerants. The objective of this study is to provide the design guideline on the optimization of a refrigeration system using both refrigerants. For both refrigerants, the performance characteristics of the refrigeration system were tested by varying refrigerant charge amount, capillary tube length, suction diameter and SLHX length. The tested refrigeration system was optimized at the refrigerant charge of 60g and the capillary tube length of 3600㎜ with R-134a, and the refrigerant charge of 34g and the capillary tube length of 3900㎜ with R-600a. The COP increased from 1.63 to 1.68 for R-134a and increased from 1.37 to 1.48 for R-600a, respectively, by applying the suction diameter expansion. In addition, the COP of the R-134a and R-600a system decreased by 2.3∼2.4% as the SLHX length decreased by 300㎜.
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