Drop-in analysis of an internal heat exchanger in a vapour compression system using R1234ze(E) and R450A as alternatives for R134a

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comunitat-uji-handle:10234/9

comunitat-uji-handle2:10234/7035

comunitat-uji-handle3:10234/8617

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http://dx.doi.org/10.1016/j.energy.2015.06.133

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Title
Drop-in analysis of an internal heat exchanger in a vapour compression system using R1234ze(E) and R450A as alternatives for R134a
Author (s)
Mota-Babiloni, AdriánOrcidScopusResearcherIDMendeley;
Navarro Esbrí, Joaquín;
 Barragán Cervera, Ángel;
Molés, Francisco;
Peris, BernardoOrcid
Date
2015-10
URI
http://hdl.handle.net/10234/159558
Publisher version
http://www.sciencedirect.com/science/article/pii/S0360544215008890
DOI
http://dx.doi.org/10.1016/j.energy.2015.06.133
ISSN
0360-5442
Publisher
Elsevier
Abstract
The IHX (internal heat exchanger) is introduced in some refrigeration systems in order to achieve higher energy performances. Results obtained vary greatly depending on the refrigerant used and working conditions. ... [+]
The IHX (internal heat exchanger) is introduced in some refrigeration systems in order to achieve higher energy performances. Results obtained vary greatly depending on the refrigerant used and working conditions. This paper describes a drop-in analysis of IHX effects on the performance of a vapour compression system using R1234ze(E) and R450A (R134a/R1234ze(E) commercial mixture) as R134a low-GWP replacements. The tests were carried out in a completely monitored vapour compression system varying the condensing and evaporating temperature, with and without a counter-current flow tube-in-tube IHX. Because the cooling capacity rises and the power consumption remains similar, the conclusion is that the IHX has a positive influence on the energy efficiency for all refrigerants tested. The COP (coefficient of performance) gain using R1234ze(E) is the highest observed (overcomes the R134a COP for the same conditions). The R1234ze(E) and R450A discharge temperature increments are lower than those of R134a so does not reach dangerous values and the IHX pressure drops are also below than that of R134a. [-]
Subject
Type
info:eu-repo/semantics/article
Rights
Copyright © 2015 Elsevier Ltd. All rights reserved. Copyright © 2016 Elsevier B.V. or its licensors or contributors. ScienceDirect ® is a registered trademark of Elsevier B.V.
info:eu-repo/semantics/restrictedAccess
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