Performance and exergy analysis of cryogenic cycles

Basit Öğe Kaydı
dc.authorid0009-0003-4810-8571
dc.authorid0000-0002-8036-7659
dc.authorid0000-0003-0040-9167
dc.authorid0000-0002-2193-3411
dc.contributor.authorÇeker, Hüsniye
dc.contributor.authorÖztekin, Erman Kadir
dc.contributor.authorKeven, Arzu
dc.contributor.authorKaraali, Rabi
dc.date.accessioned2026-07-22T14:12:13Z
dc.date.available2026-07-22T14:12:13Z
dc.date.issued2026
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Mekatronik Mühendisliği Bölümü
dc.description.abstractThis study examines and demonstrates the concepts of thermodynamics, exergy, and exergy analysis, and shows how these principles are applied to cryogenic cycles using equations. Furthermore, an energy, exergy, and performance analyses of the two-stage vapor compression cascade cryogenic cycle for natural gas liquefaction is conducted, and optimum operating conditions are presented in tables. Based on the data obtained from these equations, exergy analysis of cryogenic cycles was performed, and performance analysis and curves were plotted. When the compressor outlet pressures of the first sub cycle is increased from 3300 kPa to 4590 kPa, the exergy loss of the devices decreases, the exergy efficiencies of the increases, and the COP values ​​increase. When the cooling amount in heat exchangers 1 and 2 is increased from 9 °C to 17 °C, i.e., when cooling is increased, it leads to a slight improvement in the performance of the system. The optimum total compressor consumption according to inlet/outlet temperature difference in heat exchangers 1 and 2 are obtained at about 14-15 °C. When these two improvement methods are applied together, optimum performance values ​​of the system are obtained. The COP value increases from 0.078 to 0.1164. The system is affected by the compressor outlet pressure of the first sub cycle. Increasing the cooling level from 9°C to 17°C in heat exchangers 1 and 2 has a minor impact on system performance.
dc.identifier.citationÇeker, H., Öztekin, E. K., Keven, A., & Karaali, R. (2026). Performance and exergy analysis of cryogenic cycles. International Journal of Computational and Experimental Science and Engineering, 12(2), pp. 451-457. https://doi.org/10.22399/ijcesen.5244
dc.identifier.doi10.22399/ijcesen.5244
dc.identifier.endpage457
dc.identifier.issn2149-9144
dc.identifier.issue2
dc.identifier.startpage451
dc.identifier.urihttps://doi.org/10.22399/ijcesen.5244
dc.identifier.urihttps://hdl.handle.net/20.500.13055/1549
dc.identifier.volume12
dc.indekslendigikaynakScopus
dc.indekslendigikaynakTR-Dizin
dc.institutionauthorKaraali, Rabi
dc.institutionauthorid0000-0002-2193-3411
dc.language.isoen
dc.publisherProf. Dr. İskender AKKURT
dc.relation.ispartofInternational Journal of Computational and Experimental Science and Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectExergy
dc.subjectRefrigeration
dc.subjectCryogenic Cycles
dc.subjectPerformance
dc.titlePerformance and exergy analysis of cryogenic cycles
dc.typeArticle
dspace.entity.typePublication

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