Vis enkel innførsel

dc.contributor.authorHaida, Michal
dc.contributor.authorSmolka, Jacek
dc.contributor.authorHafner, Armin
dc.contributor.authorMastrowski, Mikolaj
dc.contributor.authorPalacz, Michal
dc.contributor.authorMadsen, Kenneth B.
dc.contributor.authorNowak, Andrzej J.
dc.contributor.authorBanasiak, Krzysztof
dc.date.accessioned2018-11-02T13:21:07Z
dc.date.available2018-11-02T13:21:07Z
dc.date.created2018-08-28T15:25:18Z
dc.date.issued2018
dc.identifier.issn0360-5442
dc.identifier.urihttp://hdl.handle.net/11250/2570850
dc.description.abstractIn this paper, the influence of heat transfer in the walls of an R744 two-phase ejector on ejector performance was investigated. A numerical investigation was performed using a computational fluid dynamic (CFD) model of the R744 two-phase flow coupled with the heat transfer inside the ejector. An ejector equipped with thermocouple channels was designed and manufactured to investigate temperature distribution in the inner walls under boundary conditions typical for a refrigeration and air-conditioning application in a supermarket. The ejector was installed on the test rig to perform a test series that evaluated the outer walls of the ejector with and without insulation. The experimental results were used to validate the proposed CFD model, and a numerical investigation was performed to analyse the influence of heat transfer on ejector performance. The motive nozzle and suction nozzle mass flow rates accuracies were within ±7% and ±15%, respectively. In addition, the proposed CFD model predicted the wall temperatures with ±5 K accuracy for most of the validated points. The heat transfer coefficient of the R744 two-phase flow inside the ejector is presented. The non-adiabatic inner walls degraded ejector performance. The maximum reduction of the mass entrainment ratio reached approximately 13%. © 2018 Elsevier Ltd. All rights reservednb_NO
dc.description.abstractNumerical investigation of heat transfer in a CO2 two-phase ejectornb_NO
dc.language.isoengnb_NO
dc.rightsNavngivelse-Ikkekommersiell 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/deed.no*
dc.titleNumerical investigation of heat transfer in a CO2 two-phase ejectornb_NO
dc.title.alternativeNumerical investigation of heat transfer in a CO2 two-phase ejectornb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber682-698nb_NO
dc.source.volume163nb_NO
dc.source.journalEnergynb_NO
dc.identifier.doi10.1016/j.energy.2018.08.175
dc.identifier.cristin1605065
dc.relation.projectNorges forskningsråd: 244009nb_NO
cristin.unitcode7548,70,0,0
cristin.unitnameTermisk energi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode2


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Navngivelse-Ikkekommersiell 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Navngivelse-Ikkekommersiell 4.0 Internasjonal