Theoretical energy performance evaluation of different single stage vapour compression refrigeration configurations using R1234yf and R1234ze(E) as working fluids
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comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
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Title
Theoretical energy performance evaluation of different single stage vapour compression refrigeration configurations using R1234yf and R1234ze(E) as working fluidsAuthor (s)
Date
2014-05-10Publisher
ElsevierISSN
0140-7007Bibliographic citation
MOLÉS, Francisco, et al. Theoretical energy performance evaluation of different single stage vapour compression refrigeration configurations using R1234yf and R1234ze (E) as working fluids. International Journal of Refrigeration, 2014, vol. 44, p. 141-150.Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/acceptedVersionSubject
Abstract
R1234yf and R1234ze(E) have been proposed as alternatives for R134a in order to work with low GWP refrigerants, but this replacement results generally in a decrease of the performance. For this reason, it is interesting ... [+]
R1234yf and R1234ze(E) have been proposed as alternatives for R134a in order to work with low GWP refrigerants, but this replacement results generally in a decrease of the performance. For this reason, it is interesting to explore ways to improve the system performance using these refrigerants. In this paper, a comparative study in terms of energy performance of different single stage vapour compression configurations using R1234yf and R1234ze(E) as working fluids has been carried out. The most efficient configuration is the one which uses an expander or an ejector as expansion device. On the other hand, using an internal heat exchanger in a cycle which replaces the expansion valve by an expander or an ejector could produce a detrimental effect on the COP. However, for all the configurations the introduction of an internal heat exchanger produces a significant increment on the cooling capacity. [-]
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International Journal of Refrigeration Volume 44, August 2014, Pages 141-150Rights
0140-7007 © 2014 Elsevier Ltd and IIR. All rights reserved.
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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