INVESTIGATION OF EFFICIENCY OF R717 REFRIGERANT SINGLE STAGE COOLING SYSTEM AND R717/R744 REFRIGERANT CASCADE COOLING SYSTEM

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dc.contributor.authorÜnal, Fatih
dc.contributor.authorÖzkan, Derya
dc.contributor.authorAkan, Ahmet Erhan
dc.date.accessioned2023-04-20T08:08:34Z
dc.date.available2023-04-20T08:08:34Z
dc.date.issued2021
dc.departmentMeslek Yüksekokulları, Çorlu Meslek Yüksekokulu, Makine ve Metal Teknolojileri Bölümü
dc.description.abstractThis study is an adaptation of ammonia cascade cooling systems using carbon dioxide on ice cream production machinesand includes thermodynamic analysis of R717/R744 cascade refrigeration system with R717 refrigerant single-stagerefrigeration system and investigation of its efficiency. As a result of the analyses, the COP value of the single-stage systemwas 3.67, the Carnot efficiency was 0.57, the second law efficiency was 0.19 and the power required to operate thecompressor was 27.55 kW. In the cascade cooling system, the COP value was 4.46, the Carnot efficiency 0.59 and thecompressor power 22.7 kW in the high-temperature part, while the COP value was measured as 14.65, the Carnot efficiency0.58 and the compressor power 6.4 kW in the low-temperature part. For the whole cascade system, the COP 3.24 and thesecond law efficiency were found to be 0.43. When the results were compared, it was concluded that although the COPvalue of the cascade cooling system was 0.43 points lower than the single-stage ammonia system, when our country'sclimate conditions and the thermophysical properties carbon dioxide gas were considered together, one of the most suitabledesigns was the cascade cooling system.
dc.identifier.doi10.31127/tuje.672888
dc.identifier.endpage68
dc.identifier.issn2587-1366
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85167587202
dc.identifier.scopusqualityN/A
dc.identifier.startpage62
dc.identifier.urihttps://doi.org/10.31127/tuje.672888
dc.identifier.urihttps://search.trdizin.gov.tr/yayin/detay/523154
dc.identifier.urihttps://hdl.handle.net/20.500.11776/11358
dc.identifier.volume5
dc.indekslendigikaynakScopus
dc.institutionauthorAkan, Ahmet Erhan
dc.language.isoen
dc.relation.ispartofTurkish Journal of Engineering
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleINVESTIGATION OF EFFICIENCY OF R717 REFRIGERANT SINGLE STAGE COOLING SYSTEM AND R717/R744 REFRIGERANT CASCADE COOLING SYSTEM
dc.typeArticle

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