Energy, environmental and enviroeconomic analysis of the use R134a/R1234yf (10/90) as replace to R134a in a vapor compression cooling system

Yıl 2020, , 101 - 106, 31.12.2020

Ragıp Yıldırım , Abdullah Yıldız

https://doi.org/10.31593/ijeat.769962

Cited By: 2

Öz

In this study, the use of R134a and R134a/R1234yf (10/90) refrigerants in a cooling system have been investigated theoretically. The energy, environmental and enviroeconomic analyzes of refrigerants have been performed for a cooling system. The energy performances of refrigerants have been made for different evaporator (between -10 oC and 5 oC) temperatures and a constant condenser (35 oC) temperature. The R134a/R1234yf (10/90) has a higher mass flow rate (26.50%) than R134a. Because R134a/R1234yf (10/90) has a lower refrigerating effect (evaporator enthalpy difference) than R134a. The R134a/R1234yf (10/90) has slightly higher compressor energy consumption (nearly 2.94%) than R134a, and so the COP of R134a has slightly (nearly 2.85%) higher than R134a/R1234yf (10/90). When compared to R134a, it is seen that the R134a/R1234yf (10/90) significantly reduces discharge temperature (about 16%). The environmental and enviroeconomic result values of R134a/R1234yf (10/90) are slightly higher than R134a. However, even the slight differences are significant to the evaluation of the environmental impact of refrigerants. It is seen that the wind energy source has the lowest environmental and enviroeconomic value and so the wind energy is the best environmentally friendly energy source according to the other energy sources.

Anahtar Kelimeler

Energy, Environmental, Enviroeconomic, Global Warming, R134a/R1234yf mixture

Kaynakça

• Akyüz A.Ö., Kumaş, K., İnan, O. and Güngör, A. 2019. Determination of carbon footprint from airplanes:Muğla province airports. Academic Platform Journal of Engineering and Science, 7(2), 291-297.
• Kumaş, K, Akyüz, A. Ö, Zaman, M. and Güngör A. 2019. Carbon footprint determination for a sustainable environment: MAKÜ Bucak school of health example. El-Cezerî Journal of Science and Engineering, 6(1),108-117.
• Pabon, J. J. G., Khosravi, A., Belman-Flores, J. M., Machado, L. and Revellin, R. 2020. Applications of refrigerant R1234yf in heating, air conditioning and refrigeration systems: A decade of researches. International Journal of Refrigeration, 118, 104-113.
• Zhang, L., Zhao, J., Yue, L., Zhou, H. and Ren, C. 2019. Cycle performance evaluation of various R134a/hydrocarbon blend refrigerants applied in vapor-compression heat pumps. Advances in Mechanical Engineering, 11, 1-14.
• Feng, B., Yang, Z. and Zhai, R. 2018. Experimental study on the influence of the flame retardants on the flammability of R1234yf. Energy, 143, 212-218.
• Sethi, A., Vera Becerra, E. and Yana Motta, S. 2016. Low GWP R134a replacements for small refrigeration (plug-in) applications. International Journal of Refrigeration, 66, 64-72.
• Mota-Babiloni, A., Navarro-Esbrí, J., Barragán, Á., Molés, F. and Peris, B. 2014. Drop-in energy performance evaluation of R1234yf and R1234ze(E) in a vapor compression system as R134a replacements. Applied Thermal Engineering, 71, 259-265.
• Mota-Babiloni, A., Belman-Flores, J. M., Makhnatch, P., Navarro-Esbrí, J. and Barroso-Maldonado, J. M. 2018. Experimental exergy analysis of R513A to replace R134a in a small capacity refrigeration system. Energy, 162, 99-110.
• Meng, Z., Zhang, H., Lei, M., Qin, Y. and Qiu, J. 2018. Performance of low GWP R1234yf/R134a mixture as a replacement for R134a in automotive air conditioning systems. International Journal of Heat and Mass Transfer, 116, 362-70.
• Aprea, C., Greco, A. and Maiorino, A. 2017. An experimental investigation of the energetic performances of HFO1234yf and its binary mixtures with HFC134a in a household refrigerator. International Journal of Refrigeration, 76, 109-117.
• Lee, Y., Kang, D. G. and Jung, D. 2013. Performance of virtually non-flammable azeotropic HFO1234yf/HFC134a mixture for HFC134a applications. International Journal of Refrigeration, 36, 1203-1207.
• Caliskan H. 2017. Energy, exergy, environmental, enviroeconomic, exergoenvironmental (EXEN) and exergoenviroeconomic (EXENEC) analyses of solar collectors. Renewable and Sustainable Energy Reviews, 69, 488-492.
• Kumaş, K., Akyüz, A. Ö. and Güngör, A. 2019. The determinatıon of carbon footprint for higher education units of Burdur Mehmet Akif Ersoy University in Bucak campus. Nigde Omer Halisdemir University Journal of Engineering Sciences, 8(2), 1277-1291.
• Goel, V., Bhat, I. K. and Prakash, R. 2009. LCA of renewable energy for electricity generation systems - a review. Renewable and Sustainable Energy Reviews, 13(5), 1067-1073.