| 摘要 |
The invention concerns a mixture in specific proportions enabling to obtain thermodynamic properties close to those of R22 (chlorodifluoromethane) while exhibiting a lower GWP (Global Warming Potential). Said novel mixture consists of three refrigerant fluids: CO2, R32 (difluorodihydromethane-CH2F2) and R134a (tetrafluorodihydromethane-CHF2CHF2). Its composition, expressed in volume fraction (kg/kg), is between the following ranges: CO2 0.05 +/- 0.02; R32 0.20 +/- 0.05; R134a 0.70 +/- 0.05.
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