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dc.contributor.authorMota-Babiloni, Adrián
dc.contributor.authorMateu-Royo, Carlos
dc.contributor.authorNavarro-Esbrí, Joaquín
dc.contributor.authorMoles, Fran
dc.contributor.authorAmat-Albuixech, Marta
dc.contributor.authorBarragán Cervera, Angel
dc.date.accessioned2018-12-04T13:29:27Z
dc.date.available2018-12-04T13:29:27Z
dc.date.issued2018-12-15
dc.identifier.citationMOTA-BABILONI, Adrián; MATEU-ROYO, Carlos; NAVARRO ESBRÍ, Joaquín; MOLÉS, Francisco; AMAT ALBUIXECH, Marta; BARRAGÁN CERVERA, Ángel (2018). Optimisation of high-temperature heat pump cascades with internal heat exchangers using refrigerants with low global warming potential. Energy, v. 165, Part B, p. 1248-1258ca_CA
dc.identifier.urihttp://hdl.handle.net/10234/177871
dc.description.abstractHigh-temperature heat pumps (HTHPs) based on vapour compression can be used for industrial low-grade waste heat valorisation, which can aid in mitigating climate change. Currently, the performance of HTHPs operating at high-temperatures lifts is limited; therefore, advanced configurations become an opportunity for their utilization. This paper presents an HTHP cascade with configurations of internal heat exchangers (IHXs) that uses low GWP refrigerants in both high-stage (HS) (HCFO-1233zd(E), HFO-1336mzz(Z), HCFO-1224yd(Z), and pentane) and low- stage (LS) (HFO-1234yf, HFO-1234ze(E), butane, isobutane, and propane) cycles. Prior to the analysis and presentation of results, an optimisation of the operating conditions is performed based on intermediate temperature and IHX effectiveness in both stage cycles. Results indicate that butane and isobutane appear to be the most convenient working LS fluids from the point of view of coefficient of performance (COP). The highest system performance is obtained using pentane and HFO-1336mzz(Z) in the HS cycle. Compared to third-generation refrigerants (HFC- 245fa/HFC-134a), a slight COP improvement is obtained using HCFO-1233zd(E), and HCFO- 1224yd(Z). A comparable or even lower volumetric flow rate at the HS compression suction is also observed. The use of pentane/butane achieved maximum COP (3.15), which is a 13% improvement compared to COP obtained when HFC-245fa/HFC-134a is employed.ca_CA
dc.format.extent24 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherElsevierca_CA
dc.relation.isPartOfEnergy (2018), v. 165, Part Bca_CA
dc.rights.urihttp://rightsstatements.org/vocab/CNE/1.0/*
dc.subjectLow-grade waste heat recoveryca_CA
dc.subjectHydrofluoroolefin (HFO)ca_CA
dc.subjectLiquid-to-suction heat exchangerca_CA
dc.subjectEnergy efficiencyca_CA
dc.subjectVapour compression systemca_CA
dc.subjectClimate change mitigationca_CA
dc.titleOptimisation of high-temperature heat pump cascades with internal heat exchangers using refrigerants with low global warming potentialca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttps://doi.org/10.1016/j.energy.2018.09.188
dc.relation.projectID1) Financial support of the Spanish Government under the ENE2015-70610-R and RTC-2015-4193-3 projects, and grant FJCI-2016-28324; 2) University Jaume I of Spain for their financial support under project P1-1B2015-38.ca_CA
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttps://www.sciencedirect.com/science/article/pii/S0360544218319601ca_CA
dc.type.versioninfo:eu-repo/semantics/publishedVersionca_CA


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