1921

Thermo-Economic Analysis of Transcritical Carbon Dioxide Refrigeration Cycle

The use of refrigerants such as CFC and HCFC will have been completely finalized in 2030 because of the damage to the ozone layerby the international protocols. For this reason, CO2 refrigerant cooling cycles, which are considered to be an alternative refrigerant andgive proper performance results, have begun to be used. In this study, thermo-economic analysis of transcritical carbon dioxiderefrigeration cycle was examined. The necessary thermodynamic data for analysis were obtained by CoolPack program. The coefficientof performance (COP) and the annual cost analysis of the cycle in the different working conditions were examined. Energy consumptioncost values required for the calculations were taken from Republic of Turkey Energy Market Regulatory Authority. The highest COPvalue of cycle for among all the working condition is found as 3.524 for 0 oC evaporator temperature, 30 oC gas cooler outputtemperature. The lowest annual cost values were found depending on the evaporator temperature change in transcritical carbon dioxiderefrigeration cycle as 3269.376 Turkish Lira (TL). Obtained results were compared.

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Kılıç, B. Exergy analysis of vapor compression refrigeration cycle with two-stage and intercooler, Heat Mass Transfer, vol. 48, pp.1207-1217, 2012.
Akdemir, Ö. and Güngör, A. CO2 soğutma çevrimlerinin maksimum performans analizi, Isı Bilimi ve Tekniği Dergisi, vol. 30, pp.37-43, 2010.
Llopi, R. Cabello, R. Sánchez, D. and Torrella, E. Energy improvements of CO2 transcritical refrigeration cycles using dedicated mechanical subcooling, International Journal of Refrigeration, DOI: 10.1016/j.ijrefrig.2015.03.016, 2015.
Bai, T. Yan, G. and Yu, J. Thermodynamics analysis of a modified dual-evaporator CO2 transcritical refrigeration cycle with two-stage ejector, Energy, vol. 84, pp.325-335, 2015.
Goodarzi, M. and Gheibi, A. Performance analysis of a modified trans-critical CO2 refrigeration cycle, Applied Thermal Engineering, vol. 75, pp.1118-1125, 2015.
Paride, G. Brian, E. and Giovanni, C. Advanced exergy analysis of a R744 booster refrigeration system with parallel compression, Energy, vol. 107, pp.562-571, 2016.
Haitao, H. Trygve, M. Petter, N. Armin, H. Guoliang, D. Qingnan, Huang. and Jingjing, Y. Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers, International Journal of Refrigeration, vol. 63, pp.72-86, 2016.
https://www.ohio.edu/mechanical/thermo/property_tables/C O2/index.html
http://www.epdk.org.tr/
Paul, M. Zhongjie, H. A review of carbon dioxide as a refrigerant in refrigeration technology, South African Journal of Science, pp.1-10, 2015.
Guptaa, D.K., Dasgupta, M.S. Performance of CO2 TransCritical Refrigeration System with Work Recovery Turbine in Indian Context, Energy Procedia, vol.109, pp.102-112, 2017.