R-407C is a mixture of hydrofluorocarbons used as a refrigerant. It is a zeotropic blend of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a). Difluoromethane serves to provide the heat capacity, pentafluoroethane decreases flammability, tetrafluoroethane reduces pressure.[1] R-407C cylinders are colored burnt orange.
![](http://up.wiki.x.io/wikipedia/commons/thumb/e/ec/R407C_container.png/89px-R407C_container.png)
This refrigerant is intended as a replacement for R-22. R-22 production will be phased out by 2020 as per the Montreal Protocol.[2]
Physical properties
editProperty | Value | ||||||
---|---|---|---|---|---|---|---|
Formula |
| ||||||
Molecular Weight (kg/kmol) | 86.2 | ||||||
Boiling point (°C) | −43.8 | ||||||
Saturated liquid density (25°C), kg/m3 | 1138 | ||||||
Saturated vapour density (25°C), kg/m3 | 43.8 | ||||||
Critical temperature (°C) | 86.4 | ||||||
Critical pressure, bar | 46.3 | ||||||
Liquid heat capacity @ 25°C, (kJ/(kg·K)) | 1.533 | ||||||
Vapour heat capacity @ 1.013 bar (kJ/(kg·K)) | 1.107 |
References
edit- ^ A brief history of refrigerant Archived 2011-07-18 at the Wayback Machine
- ^ "Unwrapping The Mystery Of R-407C". www.achrnews.com. Retrieved 27 June 2016.