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

Year 2022, Volume: 5 Issue: 2, 45 - 50, 31.12.2022

Ragıp Yıldırım Kazım Kumaş Ali Özhan Akyüz

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

References

• [1]. Kharseh, M., Altorkmany, L., Al-Khawaj, M., Hassani, F. (2014). Warming impact on the energy use of HVAC system in buildings of different thermal qualities and different climates. Energy Convers Manag., vol. 81, p 106–11, doi:10.1016/j.enconman.2014.02.001.
• [2] Yang, C., Seo, S., Takata, N., Thu, K., Miyazaki, T. (2020). The life cycle climate performance evaluation of low-GWP refrigerants for domestic heat pumps. Int J Refrig., doi:10.1016/j.ijrefrig.2020.09.020.
• [3] López-Belchí, A. (2019). Assessment of a mini-channel condenser at high ambient temperatures based on experimental measurements working with R134a, R513A, and R1234yf. Appl Therm Eng., vol. 155 p. 341–53, doi:10.1016/j.applthermaleng.2019.04.003.
• [4] Choi, S., Oh, J., Hwang, Y., Lee, H. (2017). Life cycle climate performance evaluation (LCCP) on cooling and heating systems in South Korea. Appl Therm Eng, vol.120, p. 88–98, doi:10.1016/j.applthermaleng.2017.03.105.
• [5] Yıldız, A., Yıldırım, R. (2021). Investigation of using R134a, R1234yf and R513A as refrigerant in a heat pump. Int J Environ Sci Technol., vol.18 p.1201–10, doi:10.1007/s13762-020-02857-z.
• [6] Aprea, C., Greco, A., Maiorino, A. (2018). HFOs and their binary mixtures with HFC134a working as drop-in refrigerant in a household refrigerator: Energy analysis and environmental impact assessment. Appl Therm Eng., vol. 141 p. 226–33, doi:10.1016/j.applthermaleng.2018.02.072.
• [7] Martin, A., Romy, R., Agustina, D., Ibra, A.M. (2019). Design and manufacturing of organic rankine cycle (orc) system using working fluid r-134a with helical evaporator and condenser. IOP Conf Ser Mater Sci Eng., vol.539 p. 012027, doi:10.1088/1757-899X/539/1/012027.
• [8] Yang, Z., Feng, B., Ma, H., Zhang, L., Duan, C., Liu, B., et al. (2021). Analysis of lower GWP and flammable alternative refrigerants. Int J Refrig., vol. 126 p. 12–22, doi:10.1016/J.IJREFRIG.2021.01.022.
• [9] Li, G. (2022). Evaluation of Multistage Centrifugal Chiller Performance Metrics with Different Low Global Warming Potential Refrigerants. J Eng Thermophys, vol. 31 p. 340–74, doi:10.1134/S181023282202014X/FIGURES/11. [10] Dincer İ, Kanoğlu M. Refrigeration systems and applications. Second. United Kingdom: Wiley; 2010.
• [11] Chiasson AD. Geothermal Heat Pump and Heat Engine Systems. Chichester, UK: John Wiley & Sons, Ltd; 2016.
• [12] Refrigerants Technical Service. Genetron Refrigerants Modeling Software 2022.