BSEE IASI-RO DOI: 10.2478/9788395720413-004 44 NUMERICAL AND EXPERIMENTAL ANALYSIS OF THE MV3T REFRIGERANT Mioara VINCERIUC 1,2 and Gratiela TARLEA 1,2 1 TUCE Bucharest Romania 2 RGAR, Bucharest Romania Abstract. This paper shows a modelling study for mixture MV3T used in an air- water heat pump refrigeration system. The paper has focused on theoretical and experimental data for validation purposes, using ClimaCheck software. Mathematical simulations were done with the EES software. After experimental and mathematical analysis, very good results were obtained for this mixture and thus we validated the cooling capacity and COP. Regarding F-Gas Regulation the optimum alternative for this application is MV3T. Keywords: refrigerant mixture, heat pump, ecological, COP, GWP. 1. Introduction At an international level, according to the new legislative Regulations [1], ecological alternatives for refrigerants must be found in order to decrease the global warming potential (GWP). The refrigerant mixture MV3T is proposed in this validation of mathematical and experimental modelling. The paper also shows a possible retrofit solution for R134a currently used in heat-pump refrigeration systems [5,7] with low GWP in accordance with EU Regulations. In table 1 some properties of the new refrigerant mixture are presented [6]. Table 1 Properties of refrigerant mixture retrofit [2] Refrigerant MV3T Critical temperature [ºC] 98.06 Critical density [kg/m 3 ] 493,06 Molar mass [kg/kmol] 108 It is necessary to replace HFC [1] with zero ODP and low GWP refrigerant and such an example is MV3T.