Vis enkel innførsel

dc.contributor.authorSingh, Simarpreet
dc.contributor.authorReddy, Amshith
dc.contributor.authorParkash, Maiya M.
dc.contributor.authorBanasiak, Krzysztof
dc.contributor.authorHafner, Armin
dc.contributor.authorNekså, Petter
dc.date.accessioned2019-03-28T10:07:48Z
dc.date.available2019-03-28T10:07:48Z
dc.date.created2018-07-06T10:12:39Z
dc.date.issued2018
dc.identifier.isbn978-2-36215-026-5
dc.identifier.urihttp://hdl.handle.net/11250/2592146
dc.description.abstractIn recent years, there is a rapid increase in the cooling demand. Hence, not only the consumption of energy, but also the quantity of the refrigerants released into the air is increasing globally leading to planetary heating. Carbon dioxide (CO2, R744)is a natural refrigerant which is emerging as a potential replacement for HFCs and HCs nowadays because of its attractive properties. However, to avoid liquid entry into the compressor, conventional systems are designed and optimized to keep the exit part of the evaporator dry ensuring no liquid exits the evaporator. This requires superheating of the fluid which also contributes to internal irreversibility leading to lower COP. Hence, the liquid ejectors appeared as the potential option to improve the system COP, by facilitating complete use of the evaporator by avoiding superheating and securing a safe return of liquid refrigerant. This paper presents experimental results of a transcritical R744 system using a liquid ejector. Main aim of the present study is to use a liquid ejector to eliminate superheating of an evaporator and to made a comparison between its ON/OFF switching operation on the overall performance at high ambient temperature conditions (46°C) and its performance. It is observed that the increment in evaporator pressure and decrement in compressor power consumption are 4.5% and 5.5% respectively. Also, from the reduced superheat, it is evident that the proposed design can address the problem of uneven use of heat transfer area in the evaporator due to nonlinear refrigerant distribution and contribute to energy saving.nb_NO
dc.language.isoengnb_NO
dc.publisherInternational Institute of Refrigerationnb_NO
dc.relation.ispartofProceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018
dc.titleAnalysis of R744 refrigeration system with liquid ejectorsnb_NO
dc.typeChapternb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber891-898nb_NO
dc.identifier.doi10.18462.iir.gl.2018.1306
dc.identifier.cristin1596074
dc.relation.projectUtenriksdepartementet: IND15/0023nb_NO
dc.description.localcodeThis chapter will not be available due to copyright restrictions (c) 2018 by International Institute of Refrigerationnb_NO
cristin.unitcode194,64,25,0
cristin.unitnameInstitutt for energi- og prosessteknikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel