Energy, Exergy, and Life Cycle Climate Performance Analyses of Vapor Compression Refrigeration System Used C-Pentane as Refrigerant

Year 2026, Volume: 30 Issue: 1 , 43 - 50 , 24.04.2026

Bayram Kılıç

https://doi.org/10.19113/sdufenbed.1723572

https://izlik.org/JA48AS92RZ

Abstract

This work examined the effects of using C-Pentane refrigerant in vapor compression refrigeration systems on energy, exergy, and Life Cycle Climate Performance (LCCP). System performance was evaluated depending on the changes in evaporator and condenser temperatures, and environmental and thermodynamic effects were analyzed at different temperature ranges. The results clearly show the effects of evaporator and condenser temperatures on the system COP. At a constant condenser temperature of 20°C, it is observed that the COP increases significantly as the evaporator temperature increases from -20°C to 0°C. Under these operating conditions, the COP increased from 3.58 to 8.24. However, raising the condenser temperature reduced the COP. When the condenser temperature was raised to 45°C, the COP decreased to 3.22. The exergy efficiency also generally increased with increasing evaporator temperature. When the condenser temperature was kept constant and the evaporator temperature increased, the exergy efficiency increased from 12.82% to 67.37%. However, increasing the condenser temperature raised exergy losses and decreased the efficiency. Especially when the condenser temperature was 45°C, the exergy efficiency decreased to 14.09%. The low GWP of C-Pentane ensured that direct emissions were minimal. Indirect emissions accounted for a significant portion of the system's electricity consumption. The results show that low condenser and high evaporator temperatures minimize the system's environmental impact by reducing the LCCP values.

Keywords

Refrigeration system , C-Pentane , COP , Exergy , LCCP analysis

References

• [1] Zhang, H., Pan, X., Chen, J., Xie, J. 2023. Energy, exergy, economic, and environmental analyses of a cascade absorption-compression refrigeration system using two-stage compression with complete intercooling. Applied Thermal Engineering, 225, 120185.
• [2] Yılmaz, M., Cimşit, C., Keven, A., Karaali, A. R. 2024. Analysis of cascade vapor compression refrigeration system using nanorefrigerants: Energy, exergy, and environmental (3E). Case Studies in Thermal Engineering, 57, 104373.
• [3] Dai, Z., Chen, X., Zhang, X., Zhang, H., Nawaz, K. 2025. Advanced exergy analysis on an ejector using a zeotropic mixture in a refrigeration system. International Journal of Refrigeration, 172, 266-283.
• [4] Zhang, C., Xin, G., Yan, Zhao, G. H., Han, J., Li, Z., Ju, C. 2024. Research on the performance of ultra-low temperature cascade refrigeration systems based on low GWP refrigerants. International Communication in Heat and Mass Transfer, 159, 108232.
• [5] Mendes, T., Orozco, D. J. R., Guzella, M. S., Ferreira-Oliveira, J. R., Venturini, O. J. 2024. Thermoeconomic model for diagnostic techniques to evaluate vapor compression refrigeration system performance. International Journal of Refrigeration, 167, 166-176.
• [6] Yıldırım, R., Şencan Şahin, A. 2023. Prediction of energy and exergy performance for subcooled and superheated vapor compression refrigeration systems using new generation refrigerants. Sustainable Energy Technologies and Assessments, 57, 103177.
• [7] http://www.solvaychemicals.com [Accessed: March. 04, 2025].
• [8] Çengel, A. Y., Boles, A. M. 1994. Thermodynamics: An Engineering Approach. New York: McGraw-Hill.
• [9] Subhedar, D. G., Patel, J. Z., Ramani, B. M. 2022. Experimental studies on vapour compression refrigeration system using Al2O3/mineral oil nano-lubricant. Australian Journal of Mechanical Engineering, 20(4), 1136-1141.
• [10] Kılıç, B. 2022. Exergy analysis of vapor compression refrigeration cycle with two-stage and intercooler. Heat Mass Transfer, 48, 1207-1217.
• [11] Kılıç, B. 2022. Energy and exergy analysis of transcritical carbon dioxide refrigeration cycle for different working conditions. El-Cezerî Journal of Science and Engineering, 9(1), 290-299.
• [12] Kılıç, B., Arabacı, E., Öz, S. 2024. Comparative Thermodynamic and Environmental Analysis of Vapor Compression Refrigeration System Using C-Pentane as Refrigerant. Scientific Journal of Mehmet Akif Ersoy University, 7(1), 36-43.
• [13] Atılgan, B., Azapagic, A. 2016. Assessing the Environmental Sustainability of Electricity Generation in Turkey on a Life Cycle Basis. Energies, 9(1), 31.
• [14] Gebreslassie, B.H., Guillen-Gosalbez, G., Jimenez, L., Boer, D. 2009. Design of environmentally conscious absorption cooling systems via multi-objective optimization and life cycle assessment. Applied Energy, 86(9), 1712-1722.
• [15] Yıldırım, R., Kumaş, K., Akyüz, A.Ö. 2021. Investigation of Using R454C Refrigerant Instead of R404A in a Refrigeration System: Energy and Environmental Analysis. Journal of Technical Sciences, 11(2), 47-51.