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dc.contributor.authorSingh, Simarpreet
dc.contributor.authorBanasiak, Krzysztof
dc.contributor.authorHafner, Armin
dc.contributor.authorMaiya, M.P.
dc.contributor.authorNekså, Petter
dc.date.accessioned2019-03-29T07:29:41Z
dc.date.available2019-03-29T07:29:41Z
dc.date.created2019-01-18T10:08:07Z
dc.date.issued2018
dc.identifier.isbn0-000-00001-9
dc.identifier.urihttp://hdl.handle.net/11250/2592308
dc.description.abstractEvolution in modifications for CO2 system configuration came across from the last two decades has proven to hold the potential in order to improve the overall performance of the CO2 cooling system for various applications. However, performance of the CO2 system at high ambient context is not promising and comparable with popular conventional refrigerants. Due to its unique properties, the CO2 system possesses substantial losses at high ambient temperature due to the throttling process. System configuration with parallel compressor is proven as the most popular and efficient configuration for high ambient temperature (up to 46 °C). In this study performance evaluation of a CO2 multi-ejector based supermarket cooling system of 33 kW cooling capacity with compressor configuration is experimentally evaluated at high ambient temperature (up to 46 °C). Test facility is equipped with two-phase multi-ejector resulting in pressure lift due to the expansion work recovery. Removed flashes in flash gas tank or separator after passing through two-phase ejector, are further compressed with the help of auxiliary compressor configured in parallel but with an additional possession of low compression ratio. High stability with high gascooler pressure and CO2 system consistency at high gascooler outlet temperature is observed. Maximum reduction in the AUX compressor energy consumption observed is 8% for 46 bar & 10.7% for 48 bar receiver pressure at 36 ºC gascooler outlet temperature. Also, the Exergy efficiency of the system observed is 0.315 corresponding to 3.2 PIR at 46 ºC gascooler outlet temperature.nb_NO
dc.language.isoengnb_NO
dc.publisherInternational Institute of Refrigerationnb_NO
dc.relation.ispartof17th International Refrigeration and Air Conditioning Conference 2018
dc.titlePerformance evaluation of CO2 ejector system with parallel compressor for supermarket applicationnb_NO
dc.typeChapternb_NO
dc.description.versionpublishedVersionnb_NO
dc.identifier.cristin1659969
cristin.unitcode194,64,25,0
cristin.unitnameInstitutt for energi- og prosessteknikk
cristin.ispublishedtrue
cristin.fulltextpostprint


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