R**4a is also known as Tetrafluoroethane (CF3CH2F) from the family
of HFC refrigerant. With the discovery of the damaging effect of
CFCs and HCFCs refrigerants to the ozone layer, the HFC family of
refrigerant has been widely used as their replacement.�
It is now being used as a replacement for R**2 CFC refrigerant in
the area of centrifugal, rotary screw, scroll and reciprocating
compresssors. It is safe for normal handling as it is non-toxic,
non-flammable and non-corrosive. Currently it is also being widely
used in the air conditioning system in newer automotive vehicles.
The manufacturing industry use it in plastic foam blowing.
Pharmaceuticals industry use it as a propellant.�
It exists in gas form when expose to the environment as the boiling
temperature is **4.9�F or **6.1�C.�
This refrigerant is not **0% compatible with the lubricants and
mineral-based refrigerant currently used in R**2. Design changes to
the condenser and evaporator need to be done to use this
refrigerant. The use of smaller hoses and *0% increase in control
pressure regulations also have to be done to the system.
