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dc.contributor.authorMakhnatch, Pavel
dc.contributor.authorMota-Babiloni, Adrián
dc.contributor.authorRogstam, Jörgen
dc.contributor.authorKhodabandeh, Rahmatollah
dc.date.accessioned2017-05-10T11:30:23Z
dc.date.available2017-05-10T11:30:23Z
dc.date.issued2017-04
dc.identifier.citationMAKHNATCH, Pavel, et al. Retrofit of lower GWP alternative R449A into an existing R404A indirect supermarket refrigeration system. International Journal of Refrigeration, 2017, vol. 76, p. 184-192.ca_CA
dc.identifier.urihttp://hdl.handle.net/10234/167527
dc.description.abstractR404A is going to be phased out from most of the commercial refrigeration systems due to its high GWP value of 3943. R449A (GWP of 1282) has been proposed to replace R404A with only minor system modifications in supermarkets. This paper presents the measurements of a light retrofit replacement of R404A using R449A in a medium temperature indirect refrigeration system (secondary fluid temperature at the evaporator outlet between −9 and −4 °C). It has been demonstrated that with a slight expansion device adjustment and 4% increase of refrigerant charge, R449A can be used in this refrigeration system designed for R404A because of its suitable thermodynamic properties and acceptable maximum discharge temperature. At a secondary fluid temperature at condenser inlet of 30 °C, the COP of R449A nearly matches that of R404A (both were between 1.9 and 2.2), despite having approximately 13% lower cooling capacity. As a conclusion, attending to the GWP reduction and similar energy performance, it was demonstrated using the TEWI methodology that the use of the recently developed refrigerant R449A in these applications can reduce the total CO2 equivalent emissions of an indirect supermarket refrigeration system designed for R404A refrigerant.ca_CA
dc.description.sponsorShipThis research is funded by the Swedish Refrigeration Cooperation Foundation, KYS (project “Utvärdering av en potentiell R404A-ersättare – fältprov med R449A”) and Swedish Energy Agency (EFFSYS Expand P08) with the support of Bosch Thermoteknik AB, Danfoss Värmepumpar AB, Nibe AB, Nowab, Energi & Kylanalys AB and Svenska Kyltekniska Föreningen.ca_CA
dc.format.extent8 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherElsevierca_CA
dc.relation.isPartOfInternational Journal of Refrigeration, 2017, vol. 76ca_CA
dc.rights© 2017 Elsevier Ltd and IIR. All rights reserved.ca_CA
dc.subjectSupermarket refrigerationca_CA
dc.subjectR404Aca_CA
dc.subjectR449Aca_CA
dc.subjectHFC HFO mixtureca_CA
dc.subjectLow GWPca_CA
dc.subjectAlternative refrigerantca_CA
dc.titleRetrofit of lower GWP alternative R449A into an existing R404A indirect supermarket refrigeration systemca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttps://doi.org/10.1016/j.ijrefrig.2017.02.009
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttp://www.sciencedirect.com/science/article/pii/S0140700717300610ca_CA


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