Thermo-Economic Analysis of Transcritical Carbon Dioxide Refrigeration Cycle

Abstract

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.