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This refrigerant is intended as a replacement for R-22. R-22 production will be phased out by 2020 as per the Montreal ... While R407C has a lower GWP than R22, ...
The car lost its original number plates and now bears number plates from other retired R22 subway cars (7370, 7373, 7435, and 7460). 7422 – converted to R95 revenue collection car 1R714. The car was retired in 2006 and is now preserved by the New York Transit Museum. [3] A handful of R22 cars are currently in work service:
R-407A is a mixture of gasses used as a refrigerant.It is a zeotropic blend of difluoromethane (HFC-32), pentafluoroethane (HFC-125) and 1,1,1,2-tetrafluoroethane (HFC-134a). [1]
The phase-down mandated by the AIM Act will lead to R-410A's replacement by other refrigerants beginning in 2022. Alternative refrigerants are available, including hydrofluoroolefins , R-454B (a zeotropic blend of R-32 and R-1234yf ), hydrocarbons (such as propane R-290 and isobutane R-600A ), and even carbon dioxide ( R-744 , GWP = 1).
R22 - Chlorodifluoromethane Cylinder. Production and current applications ... Prandtl Number Bulk modulus (K^-1) 230 1416 1.087 3.56E-04 2.51E-07 0.1145 7.44E-08
A special numbering system is to be used for fluorinated alkanes, prefixed with Freon-, R-, CFC- and HCFC-, where the rightmost value indicates the number of fluorine atoms, the next value to the left is the number of hydrogen atoms plus 1, and the next value to the left is the number of carbon atoms less one (zeroes are not stated), and the ...
R22 Harmful if swallowed R23 Toxic by inhalation R24 Toxic in contact with skin R25 Toxic if swallowed R26 Very toxic by inhalation R27 Very toxic in contact with skin R28 Very toxic if swallowed R29 Contact with water liberates toxic gas. R30 Can become highly flammable in use R31 Contact with acids liberates toxic gas R32
The first version was produced as the R22, followed by the R22 HP, R22 Alpha, R22 Beta, and R22 Beta II. Superficially, the aircraft appear similar. The R22 HP was fitted with a 160 bhp Lycoming O-320-B2C engine, an increase of 10 bhp (7.5 kW) over the original R22.