Selçuk SELİMLİ, Ziyaddin RECEBLİ, Mehmet GÖRKEN

EVALUATION THE EFFECTS OF USED REFRIGERANTS R134a AND R600a IN COOLING SYSTEMS ON THE SYSTEM PERFORMANCE

Known as R134a refrigerant is in the class of refrigerants as uneconomic and having global warming potential. In the scope of study, determination the effect of R600a refrigerant which is known more environment friendly and economic alternative of R134a refrigerant on the cooling performance of the cooling machine was aimed. In this reason, effect of R134a and R600a refrigerants on the cooling performance of the cooling machine was experimentally studied. Experimentation setup was established with 70x70x50 cm dimensions cooling room and cooling unit. 100 gr refrigerant filled experimentation setup was operated at 28⁰C and 35⁰C ambient temperature in a period of time and according to the taken measurements cooling systems COP value was compared. As a result, using R600a refrigerant instead of R134a refrigerant, the cooling machine average COP value was increased 4%. This case demonstrates that R600a using cooling machine performs higher performance than R134a using cooling machine. Also, it was seen that a using coolant R134a cooled the space faster than a using coolant R600a in cooling machine.

Keywords:

Cooling machine, refrigerant R134a, R600a, COP,

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[1] B.O. Bolaji and Z. Huan. Thermodynamic analyses of hydrocarbon refrigerants in a subcooling refrigeration system. J. Eng. Res, 1: 317-333, 2013.
[2] A. Baskaran and P.K. Mathews. A performance comparison of vapour compression refrigeration system using eco-friendly refrigerants of low global warming potential. Int. J. Sci. R Pub., 2: 1-8, 2012.
[3] N. Bilir, H.K. Ersoy, A. Hepbaşlı, Farklı soğutucu akışkanlar için genleştirici olarak ejektör kullanan kompresörlü soğutucunun performans analizi, X. Ulusal Tesisat Mühendisliği Kongresi, (İzmir, April 2011), p. 1317-1325.
[4] I.L. Maclaine-cross and E. Leonardi, Comparative performance of hydrocarbon refrigerants, I.I.F. - I.I.R. – Commissions Report, (Melbourne, 1996), p. 1-11.
[5] M.Y. Lee, D.Y. Lee and Y. Kim. Performance characteristics of a small-capacity directly cooled refrigerator using R290/R600a (55/45). Int. J. Refrıg., 31: 734-741, 2008.
[6] S. Gürler. R 134a ve R 600a Soğutucu akışkanlı ev tipi buzdolaplarında ekserji analizi. YL tezi, Ege Üniversitesi Fen Bilimleri Enstitüsü, İzmir, 2006.
[7] D.Ö. Esen ve M. Hoşöz. R12 ve R134a soğutucu akışkanları kullanan otomobil iklimlendirme sisteminin deneysel performans analizi. Gazi Üniv. Müh. Mim. Fak. Der., 21: 703-709, 2006.
[8] A.E. Özgür ve H.C. Bayrakçı. Farklı buharlaşma ve yoğuşma sıcaklıklarına göre R134a ve R600a akışkanlarının karşılaştırılması. SDÜ Fen Bil. E. Der., 12: 223-226, 2008.
[9] M. Mohanraj, S. Jayaraj, C. Muraleedharan and P. Chandrasekar. Experimental investigation of R290/R600a mixture as an alternative to R134a in a domestic refrigerator. Int. J. Therm. Sci., 48: 1036-1042, 2009.
[10] S. Wongwises and N. Chimres. Experimental study of hydrocarbon mixtures to replace HFC-134a in a domestic refrigerator. Energ. Convers. Manage., 46: 85-100, 2005.
[11] C.S. Jwo, L.Y. Jeng and T.P. Teng. Performance assessment of an R134A domestic dehumidifier retrofitted with a hydrocarbon mixture. Int. J. Green Energy, 7: 485-497, 2010.
[12] I.M.G. Almeida, C.R.F. Barbosa and F.A.O. Fontes. Thermodynamic and thermophysical assessment of hydrocarbons application in household refrigerator. Tech., 9: 19-27, 2010.
[13] K. Mani, V. Selladurai and N. Murugan. Experimental investigations with eco-friendly refrigerants using design of experiments technique–mathematical modelling and experimental validation. Therm. Sci., Online 00: 114-130, 2013.
[14] J.U. Ahamed, R. Saidur and H.H. Masjuki. Thermodynamic performance analysis of R-600 and R600a as refrigerant. Eng. e- Trans., 5: 11-18, 2010.
[15] M.A. Sattar, R. Saidur and H.H. Masjuki. Performance ınvestigation of domestic refrigerator using pure hydrocarbons and blends of hydrocarbons as refrigerants. Int. J. Mech. Ind. Sci. Eng., 1: 32-37, 2007.

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ISSN: 1304-7191
Yayın Aralığı: Yılda 4 Sayı
Yayıncı: Yıldız Teknik Üniversitesi

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