Experimental evaluation of refrigerants R290, R32 and R410a in a refrigeration system originally designed for R22

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dc.contributor.author Antunes, A.H.P.
dc.contributor.author Bandarra, Filho E.P.
dc.contributor.author Mendonza, O.S.H.
dc.contributor.author Souza, L.M.P.
dc.contributor.author Bertoni, M.A.R.
dc.date.accessioned 2015-04-23T11:43:56Z
dc.date.available 2015-04-23T11:43:56Z
dc.date.issued 2014
dc.description.abstract Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014. en_ZA
dc.description.abstract The present article focuses on the climate performance of three different refrigerants used to replace the hydrochlorofluorocarbon (HCFC), R22, for common refrigeration applications. The original system consists of a small commercial refrigeration system, which provides nominal refrigerating capacity of 15 kW. The condition of replacement of R22 by these alternative fluids (R290, R32 and R410A) represented a drop-in operation; there were no changes in the basic cycle components during the tests, with the exception of the lubricating oil. Experimental tests were carried out in steady state condition and throughout the tests the compressor had its entire speed range explored for different levels of modulation of the electronic expansion valve (EEV), thus enabling the realization of a complete thermodynamic analysis. The use of the hydrofluorocarbon (HFC), R32, which has a low global warming potential (GWP) and zero ozone-depleting potential (ODP) guaranteed good efficiency to the refrigeration system. The results showed regular conditions of efficiency of the experimental facility operating with the blend R410A. Finally, the use of the hydrocarbon (HC) resulted in the maximum values for the coefficient of performance, COP. en_ZA
dc.description.librarian dc2015 en_ZA
dc.format.extent 7 pages en_ZA
dc.format.medium PDF en_ZA
dc.identifier.citation Antunes, AHP, Bandarra, FEP, Mendonza, OSH, Souza, LMP & Bertoni, MAR 2014, 'Experimental evaluation of refrigerants R290, R32 and R410a in a refrigeration system originally designed for R22', Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014. en_ZA
dc.identifier.isbn 97817759206873
dc.identifier.uri http://hdl.handle.net/2263/44607
dc.publisher International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics en_ZA
dc.rights © 2014 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. en_ZA
dc.subject Climate performance en_ZA
dc.subject Hydrochlorofluorocarbon en_ZA
dc.subject HCFC en_ZA
dc.subject R22 en_ZA
dc.subject Commercial refrigeration system en_ZA
dc.subject R290 en_ZA
dc.subject R32 en_ZA
dc.subject R410A en_ZA
dc.subject Electronic expansion valve en_ZA
dc.subject EEV en_ZA
dc.subject Hydrofluorocarbon en_ZA
dc.subject HFC en_ZA
dc.subject Global warming potential en_ZA
dc.subject Ozone-depleting potential en_ZA
dc.title Experimental evaluation of refrigerants R290, R32 and R410a in a refrigeration system originally designed for R22 en_ZA
dc.type Presentation en_ZA


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