For any refrigerant, there is a unique relationship between saturation pressure and temperature. This relationship is typically represented by a pressure-temperature chart or a thermodynamic property table.
R-12 (Dichlorodifluoromethane) is a chlorofluorocarbon (CFC) refrigerant historically widely used in automotive air conditioning, commercial refrigeration, and domestic refrigerators. Although its production was phased out under the Montreal Protocol due to ozone depletion potential (ODP), understanding its thermodynamic properties remains crucial for maintaining legacy systems, retrofitting calculations, and educational purposes. r-12 saturation pressure at -10 c
In a standard vapor-compression cycle, the evaporator is where the refrigerant absorbs heat and boils. If a walk-in freezer is designed to maintain an air temperature of roughly -5°C to -10°C, the coil temperature must be lower than the box temperature to facilitate heat transfer. For any refrigerant, there is a unique relationship
The saturation pressure of R-12 at -10°C is approximately 201.7 kPa (or 2.017 bar). Although its production was phased out under the
At a saturation temperature of -10°C, the (2.191 bar) , which translates to approximately 25.1 psig (pounds per square inch gauge).
For context, at -10°C:
Saturation Temperature and Pressure Explained | PDF - Scribd