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ECO- EFFICIENT AND NATURAL REFRIGERANTS -THEORETICAL STUDY CASE
Abstract
To implement the International Legislation, in the future it is necessary to retrofit HFC refrigerants with ecological ones. Minimizing the presence of F-gases deriving from activities in the field of refrigeration in the atmosphere, air-conditioning systems and heat pumps can only be carried out by observing the F-Gas Regulations, namely the (CE) 517/2014 Regulation and its relevant Subsidiaries, along with the European (and Romanian) refrigeration safety standard SR EN 378. Demonstrating a strong commitment to protect the environment through the use of natural refrigerants and most advanced refrigeration solutions, the authors group decided to use green technology for NH3 and CO2 for commercial applications. The comparative study analyses the coefficient of performance of the refrigeration systems and also the TEWI factor (Total Equivalent Warming Impact). In the paper theoretical simulations with EES, Refprop and Pack Calculation Pro software are made. Also, an experimental setup R- 404A one stage refrigeration system, realized in the TUCEB Laboratory is presented. From the environmental perspective, R717 and R744 have the advantage of a lower Global Warming Potential than R-404A. From the energy efficiency and yearly consumptions point of view, the R717 is the best alternative and has a higher EER than R744 and R404A.
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References7
Tarlea G. M.,Vinceriuc M., Zabet I., Tarlea A., Theoretical study regarding the ecological alternatives for R404A refrigerant, published at the 23rd IIR International Congress of Refrigeration, Prague, Czech Republic, August 2011,pp 21-26.
Tarlea G. M.,Vinceriuc M., Zabet I., Tarlea A., Theoretically study of ecological alternative for R404A, R507A and R22, published at the 42nd International Congress and Exhibition Heating, Refrigeration and Air-Conditioning Belgrade, 30th November 2nd December, 2011, pp 279- 286.
Tarlea, G.M., Vinceriuc, M., Zabet, I., Tarlea,A., R404A Refrigerant Retrofit Study, Clima, Prague, Czech Republic, 2013, pp 188-194.
Tarlea G.M., ROMANIA R717 and 744 Refrigeration Users, Ohrid, 2015 7p.
Tarlea, G.M., Vinceriuc, M., Zabet, I., Tarlea,A., Natural Refrigerant Mixture Alternatives Retrofit Eco Efficiency Comparative Study Case, IIR International Congress of Refrigeration, Yokohama Japan, 2015.
Tarlea, G.M., Vinceriuc, M., Zabet, I., Tarlea A., Romania Natural Refrigerants User; The 12th IIR Gustav Lorentzen Natural Working Fluids Conference, Edinburgh, UK, 2016.
Zabet, I., Tarlea, G.M., Refrigeration Systems with Scroll Compressors, Ed. MATRIX, Bucharest , Romania, 2016, 197 p.
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