Browse > Article
http://dx.doi.org/10.7842/kigas.2012.16.3.042

Performance Analysis of 2-Stage Compression and 1-Stage Expansion Refrigeration System using Alternative Natural Refrigerants  

Roh, Geon-Sang (Dept. of Refrigeration & Air-Conditioning Engineering, Tongmyong University)
Publication Information
Journal of the Korean Institute of Gas / v.16, no.3, 2012 , pp. 42-47 More about this Journal
Abstract
In this paper, alternative natural refrigerant R290(Propane), R600(Butane), R717(Ammonia), R1270(Propylene) for freon refrigerant R22 were used working fluids for 2-stage compression and 1-stage expansion refrigeration system. The operating parameters considered in this study included evaporation temperature, condensation temperature, subcooling degree, superheating degree, mass flow rate ratio of inter-cooler. The main results were summarized as follows : The COP of 2-stage compression and 1-stage expansion refrigeration system increases with the increasing subcooling degree and mass flow rate ration of inter-cooler, but decreases with the increasing evaporating temperature, condensing temperature and superheating degree. Therefore, subcooling degree, mass flow rate ratio of inter-cooler of 2-stage compression and 1-stage expansion refrigeration system using natural refrigerants have an effect on COP of this system. The COP of natural refrigerants was higher than the COP of freon R22 in this study, so points to be considered are the security, the attached facilities for natural refrigerants than COP.
Keywords
2-stage compression and 1-stage expansion refrigeration system; Natural refrigerant; Ammonia; Propane; Butane; Propylene;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Bodinus, W. S.." The rise and fall of carbon dioxide systems". ASHRAE, pp. 29-34, (1999)
2 Donaldson, B. and Nagengast, B. " Heat and cold: mastering the great indoors". ASHRAE; (1994)
3 Kyoto protocol to the united nations framework convention on climate change, (2005)
4 Liao, S. and Jakobsen, A., " Optimal heat rejection pressure in transcritical carbon dioxide air conditioning and heat pump system", IIF-IIRSections B and E-Oslo, Norway-1998. pp. 301-310, (1998)
5 Neksa, P., Rekstad, H., Zakeri, G. R. and Schiefloe, P. A., "$CO_{2}$ heat pump water heater: characteristics, system design and experimental results", International Journal of refrigeration, Vol. 21, No. 3, pp.172-179, (1998)   DOI   ScienceOn
6 Hwang, Y. and Reinhard, R., "Experimental Investigation of the $CO_{2}$ Refrigeration cycle", ASHRAE Transacitions: simpogia, pp. 1219-1227, (1999)
7 Brown, S. J., Yana-Motta, F. S. and Domanski, A. P., "Comparative analysis of an auto motive air conditioning systems operating with $CO_{2}$ and R134a", International Journal of refrigeration, 25, pp. 19-32, (2002)   DOI   ScienceOn
8 손창효, "$NH_{3}$- $CO_{2}$를 사용하는 이원 냉동시스템의 성능 분석", 한국가스학회지, Vol.14, No.1, pp.1-7, (2010)
9 fChart Software Inc. Engineering Equation Solver, (2006)