Which hydrocarbon refrigerant is often used as a substitute for CFCs?

The choice of propane (R-290) as a substitute for CFCs is due to its effective thermodynamic properties and environmental friendliness. Propane is a hydrocarbon refrigerant that has a low global warming potential (GWP) and ozone depletion potential (ODP), making it a more sustainable alternative compared to the chlorofluorocarbons (CFCs) that have been phased out due to their harmful effects on the ozone layer.

Propane has efficient cooling characteristics, which makes it suitable for various refrigeration and air conditioning applications. Its flammability is a consideration, but when handled properly in systems designed for its use, it can be a safe and efficient choice.

Although isobutane, butane, and ethylene also serve as alternatives to CFCs, propane stands out for its widespread application in commercial and domestic refrigeration systems, largely due to its reliable performance, efficiency, and lower environmental impact. This makes propane the more recognized and utilized substitute in the context of phasing out CFC refrigerants.