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Experimental comparison between R409A and R437A performance in a heat pump unit

2017Journal article Open access
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dc.contributor.authorDuarte, Miguel Vicente
dc.contributor.authorPires, Luís Carlos Carvalho
dc.contributor.authorSilva, Pedro Dinho da
dc.contributor.authorGaspar, Pedro Dinis
dc.date.accessioned2019-11-19T09:40:55Z
dc.date.available2019-11-19T09:40:55Z
dc.date.issued2017
dc.description.abstractThis paper reports an experimental comparison between the use of the refrigerants R409A and R437A in a heat pump unit designed and developed to work with R12. Although the use of both refrigerants in new equipments were abolished in EU and US according the new F-Gas Regulation of EU and SNAP, they still being used as options for R12 in old equipments, especially in developing countries. Both refrigerants were studied for the same test conditions, according to two groups of tests: group A (variation of the heat source temperature) and group B (variation of refrigerant flow rate). The results obtained showed that the R437A presents a higher discharge pressure and a lower discharge temperature. The heating and cooling capacities of both refrigerants were similar, as well as the exergetic efficiency. For the group A of tests the COP of both refrigerants was similar and for the group B of tests the R409A presented an average COP 15% higher. According to the results obtained it is recommended the use of R409A in old equipments (as transition refrigerant) until the acquisition of equipments operating with refrigerants with low-GWP becomes technically and economic feasible.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1515/eng-2017-0011pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/7585
dc.language.isoengpt_PT
dc.publisherOpen Engineeringpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectR409Apt_PT
dc.subjectR437Apt_PT
dc.subjectExergetic studypt_PT
dc.subjectEnergetic performancept_PT
dc.subjectHeat pumppt_PT
dc.titleExperimental comparison between R409A and R437A performance in a heat pump unitpt_PT
dc.typejournal article
dspace.entity.typePublication
person.familyNameDuarte
person.familyNamePires
person.familyNameSilva
person.familyNameGaspar
person.givenNameMiguel
person.givenNameLuís
person.givenNamePedro
person.givenNamePedro Dinis
person.identifier974218
person.identifier.ciencia-id7617-D1CB-5F80
person.identifier.ciencia-id3C14-B985-13A1
person.identifier.ciencia-id6111-9F05-2916
person.identifier.orcid0000-0002-1376-5403
person.identifier.orcid0000-0001-7964-4623
person.identifier.orcid0000-0003-2204-3397
person.identifier.orcid0000-0003-1691-1709
person.identifier.ridA-6638-2016
person.identifier.ridN-3016-2013
person.identifier.scopus-author-id7006556579
person.identifier.scopus-author-id7203088999
person.identifier.scopus-author-id57419570900
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationa6d780d4-8cd3-4592-82ca-a40410d291ee
relation.isAuthorOfPublicationb236d204-15b8-4013-927d-98133dd6ae25
relation.isAuthorOfPublication483bd890-f402-4ce4-b740-b37febcba37f
relation.isAuthorOfPublicationb69e2ba0-43af-4cf7-873e-090fd9fc6c94
relation.isAuthorOfPublication.latestForDiscoveryb69e2ba0-43af-4cf7-873e-090fd9fc6c94

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