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Evaluation of optimal subcooling in subcritical heat pump systems

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Evaluation of optimal subcooling in subcritical heat pump systems

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dc.contributor.author Pitarch, Miquel es_ES
dc.contributor.author Hervas-Blasco, Estefanía es_ES
dc.contributor.author Navarro-Peris, Emilio es_ES
dc.contributor.author Gonzálvez-Maciá, José es_ES
dc.contributor.author Corberán, José M. es_ES
dc.date.accessioned 2018-09-17T08:21:23Z
dc.date.available 2018-09-17T08:21:23Z
dc.date.issued 2017 es_ES
dc.identifier.issn 0140-7007 es_ES
dc.identifier.uri http://hdl.handle.net/10251/107435
dc.description.abstract [EN] The performance of a transcritical cycle is highly dependent on the rejection pressure. The optimal rejection pressure depends mainly on the inlet and outlet temperatures at the heat sink (secondary fluid). For the subcritical cycles, recent studies have demonstrated that the performance of these systems depends significantly on the degree of subcooling and its optimal value varies depending on the application. This paper presents a general methodology to calculate the optimal subcooling depending on the boundary conditions. The refrigerants R290, R134a, R1234yf and R32 are analyzed. Exergy analysis is used in order to see the subcooling effect at condenser and expansion valve independently. The optimal subcooling strongly depends on the temperature lift at the secondary fluid, and it is found when two pinch points are given in the condenser, one at the condenser outlet and another one inside the condenser (at the refrigerant dew point). es_ES
dc.description.sponsorship Part of the results of this study were developed in the mainframe of the FP7 European project "Next Generation of Heat Pumps working with Natural fluids" (NxtHPG). Part of the work presented was carried by Miguel Pitarch-Mocholi with the financial support of the PhD scholarship from the Universitat Politecnica de Valencia. The authors would like to acknowledge the Spanish "MINISTERIO DE ECONOMIA Y COMPETITIVIDAD", through the project ref-ENE2014-53311-C2-1-P-AR "Aprovechamiento del calor residual a baja temperatura mediante bombas de calor para la produccion de agua caliente" for the given support. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof International Journal of Refrigeration es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Heat exchanger design es_ES
dc.subject Heat pump es_ES
dc.subject Natural refrigerants es_ES
dc.subject Optimal working point es_ES
dc.subject Subcooling es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Evaluation of optimal subcooling in subcritical heat pump systems es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.ijrefrig.2017.03.015 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//ENE2014-53311-C2-1-P/ES/APROVECHAMIENTO DEL CALOR RESIDUAL A BAJA TEMPERATURA MEDIANTE BOMBAS DE CALOR PARA LA PRODUCCION DE AGUA CALIENTE/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/307169/EU/Next Generation of Heat Pumps working with Natural fluids./
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Termodinámica Aplicada - Departament de Termodinàmica Aplicada es_ES
dc.description.bibliographicCitation Pitarch, M.; Hervas-Blasco, E.; Navarro-Peris, E.; Gonzálvez-Maciá, J.; Corberán, JM. (2017). Evaluation of optimal subcooling in subcritical heat pump systems. International Journal of Refrigeration. 78:18-31. https://doi.org/10.1016/j.ijrefrig.2017.03.015 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.ijrefrig.2017.03.015 es_ES
dc.description.upvformatpinicio 18 es_ES
dc.description.upvformatpfin 31 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 78 es_ES
dc.relation.pasarela S\354516 es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder European Commission


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