Evaluation of The Use R450A as an Alternative to R134a in Low and Medium Temperature Heat Pump Systems: 4-E (Energy, Exergy, Environmental and Enviro-Economic) Analysis

Year 2021, Volume: 7 Issue: 4, 556 - 569, 15.12.2021

Ragıp Yıldırım

https://doi.org/10.28979/jarnas.939582

Cited By: 2

Abstract

This investigation presents a theoretical evaluation of the use R450A replace to R134a in the low and medium temperature heat pump systems. The energy, exergy, environmental and enviro-economic analyzes of heat pumps have been performed for two refrigerants (R134a and its alternative R450A). The thermodynamic and environmental analyses have been made for two heat source temperatures (10 oC and 20 oC) and six heat sink temperatures (from 30 oC to 55 oC). It has been observed that R450A's mass flow rate is lower than R134a. Because the density of R450A in the heat pump suction line is lower than R134a. Although the heating capacity of R134a is more than R450A, the reason why R134a has a similar COP value with R450A is that R450A's compressor energy consumption is lower than R134a. Exergy destruction occurred mostly in the compressor under all operating conditions for both refrigerants. At low heat sink temperatures, minimum exergy destruction occurs in the expansion valve, as the minimum exergy destruction occurs in the evaporator at high heat sink temperatures. The exergy results show that R450A behaves similarly to R134a. In conclusion, as alternative refrigerant R450A can be used in heat pumps replace to R134a according to energy, exergy, environmental and environmental-economic analysis results.

Keywords

Climate change, Energy and exergy, Global warming, Heat pump, New generating refrigerants

References

• Arora, P., Seshadri, G., & Tyagi, A. K. (2018). Fourth-generation refrigerant: HFO 1234yf. Current Science, 115(8), 1497–1503. https://doi.org/10.18520/cs/v115/i8/1497-1503
• Atilgan, B., & Azapagic, A. (2016). Assessing the Environmental Sustainability of Electricity Generation in Turkey on a Life Cycle Basis. Energies, 9(1), 31. https://doi.org/10.3390/en9010031
• Caliskan, H. (2017). Energy, exergy, environmental, enviroeconomic, exergoenvironmental (EXEN) and exergoenviroeconomic (EXENEC) analyses of solar collectors. In Renewable and Sustainable Energy Reviews (Vol. 69, pp. 488–492). Elsevier Ltd. https://doi.org/10.1016/j.rser.2016.11.203
• Calm, J. M. (2008). The next generation of refrigerants - Historical review, considerations, and outlook. In International Journal of Refrigeration (Vol. 31, Issue 7, pp. 1123–1133). Elsevier. https://doi.org/10.1016/j.ijrefrig.2008.01.013
• Çengel, Y. A., & Boles M. A. (2008). Termodinamik: mühendislik yaklaşımıyla (A. Pınarbaşı (ed.)). İzmir Güven Kitabevi.
• Chiasson, A. D. (2016). Geothermal Heat Pump and Heat Engine Systems. In Geothermal Heat Pump and Heat Engine Systems. John Wiley & Sons, Ltd. https://doi.org/10.1002/9781118961957
• Ciconkov, R. (2018). Refrigerants: There is still no vision for sustainable solutions. In International Journal of Refrigeration (Vol. 86, pp. 441–448). Elsevier Ltd. https://doi.org/10.1016/j.ijrefrig.2017.12.006
• Deveci̇oğlu, A. G., & Oruç, V. (2018). A comparative energetic analysis for some low-GWP refrigerants as R134a replacements in various vapor compression refrigeration systems. J. of Thermal Science and Technology, 38(2), 51–61. https://dergipark.org.tr/en/pub/isibted/780446
• Dincer, İ., & Kanoğlu, M. (2010). Refrigeration systems and applications (Second). Wiley.
• Gatarić, P., & Lorbek, L. (2021). Evaluating R450A as a drop-in replacement for R134a in household heat pump tumble dryers. International Journal of Refrigeration. https://doi.org/10.1016/j.ijrefrig.2021.03.020
• Gill, J., Singh, J., Ohunakin, O. S., & Adelekan, D. S. (2019). Exergy analysis of vapor compression refrigeration system using R450A as a replacement of R134a. Journal of Thermal Analysis and Calorimetry, 136(2), 857–872. https://doi.org/10.1007/s10973-018-7675-z
• Heredia-Aricapa, Y., Belman-Flores, J. M., Mota-Babiloni, A., Serrano-Arellano, J., & García-Pabón, J. J. (2020). Overview of low GWP mixtures for the replacement of HFC refrigerants: R134a, R404A and R410A. In International Journal of Refrigeration (Vol. 111, pp. 113–123). Elsevier Ltd. https://doi.org/10.1016/j.ijrefrig.2019.11.012
• Jiang, J., Hu, B., Wang, R. Z., Liu, H., Zhang, Z., & Li, H. (2021). Theoretical Performance Assessment of Low-GWP Refrigerant R1233zd(E) Applied in High Temperature Heat Pump System. International Journal of Refrigeration. https://doi.org/10.1016/j.ijrefrig.2021.03.026
• Llopis, R., Sánchez, D., Cabello, R., Catalán-Gil, J., & Nebot-Andrés, L. (2017). Experimental analysis of R-450A and R-513A as replacements of R-134a and R-507A in a medium temperature commercial refrigeration system. International Journal of Refrigeration, 84, 52–66. https://doi.org/10.1016/j.ijrefrig.2017.08.022
• Mateu-Royo, C., Arpagaus, C., Mota-Babiloni, A., Navarro-Esbrí, J., & Bertsch, S. S. (2021). Advanced high temperature heat pump configurations using low GWP refrigerants for industrial waste heat recovery: A comprehensive study. Energy Conversion and Management, 229, 113752. https://doi.org/10.1016/j.enconman.2020.113752
• Velasco, F. J. S., Illán-Gómez, F., & García-Cascales, J. R. (2021). Energy efficiency evaluation of the use of R513A as a drop-in replacement for R134a in a water chiller with a minichannel condenser for air-conditioning applications. Applied Thermal Engineering, 182, 115915. https://doi.org/10.1016/j.applthermaleng.2020.115915
• Yang, Z., Feng, B., Ma, H., Zhang, L., Duan, C., Liu, B., Zhang, Y., Chen, S., & Yang, Z. (2021). Analysis of lower GWP and flammable alternative refrigerants. International Journal of Refrigeration, 126, 12–22. https://doi.org/10.1016/j.ijrefrig.2021.01.022
• Yildirim, R., & Yildiz, A. (2020a). Evaluation of performance of hfc-r134a/hfo-1234yf binary mixtures used as refrigerant in a heat pump system. El-Cezeri Journal of Science and Engineering, 7(3), 1440–1449. https://doi.org/10.31202/ecjse.734445
• Yildirim, R., & Yildiz, A. (2020b). Energy, environmental and enviroeconomic analysis of the use R134a/R1234yf (10/90) as replace to R134a in a vapor compression cooling system. International Journal of Energy Applications and Technologies, 7(4), 101–106. https://doi.org/10.31593/ijeat.769962
• Zhang, J., Zhang, H. H., He, Y. L., & Tao, W. Q. (2016). A comprehensive review on advances and applications of industrial heat pumps based on the practices in China. In Applied Energy (Vol. 178, pp. 800–825). Elsevier Ltd. https://doi.org/10.1016/j.apenergy.2016.06.049
• Zilio, C., Brown, J. S., Schiochet, G., & Cavallini, A. (2011). The refrigerant R1234yf in air conditioning systems. Energy, 36(10), 6110–6120. https://doi.org/10.1016/j.energy.2011.08.002