COMPARATIVE ENERGETIC ANALYSIS OF A REFRIGERATION SYSTEM BY USING R123 AND ITS ALTERNATIVE R514A REFRIGERANTS

Abstract

In this study, the energy analysis of a single-stage vapor compression refrigeration system operating with R514A refrigerant, which is used as an alternative to R123 refrigerant, has been made and compared. Within the scope of energy analysis, the mass flow rates of refrigerants, compressor energy consumption, cooling capacities, cooling effects (evaporator enthalpy difference), COPs, and discharge temperatures have been examined. It has been observed that R123 refrigerant has a higher mass flow rate and compressor energy consumption than R514A. In addition, although R123 has a low cooling effect, it has a higher cooling capacity than R514A, and this is because R123 has a high mass flow rate. R514A is superior to R123 in terms of discharge temperature. Finally, it has been seen that the COPSM of R514A is almost the same (slightly lower) as R123. As a result, the use of R514A in the cooling system will reduce direct emissions. However, the operating life of the system should be considered. In other words, indirect emissions (especially due to energy consumption) should not be neglected in the selection of refrigerants.

Keywords

• R123
• R514A
• lower GWP refrigerants
• Cooling system
• Greenhouse emissions

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