Is R744 the same as CO2?
R744 (CO2) is refrigerant grade CO2, used as a replacement for R134a and R404A in ultra-low, low, and medium temperature refrigeration applications. R744 (CO2) is becoming increasingly popular due to its excellent properties.
Does R744 deplete the ozone layer?
Unfortunately when the refrigerant does ultimately leak and make its way up to the ozone layer the ultraviolet radiation breaks up the molecule releasing the highly active chlorine radicals, which help to deplete the ozone layer.
Is R744 flammable?
R744 has a global warming potential (GWP) of 1 and is non-flammable.
Is R744 high pressure refrigerant?
This is post number five of a series, and continues our overview of CO2 as a refrigerant by touching on the potential hazards associated with handling systems where R744 is present. R744 Hazards R744 is not flammable, but its high pressures, toxicity at high concentration, and potential for dry ice…
Why don’t we use CO2 as a refrigerant?
The main drawback of carbon dioxide as a refrigerant is its inherent high working pressure. This pressure is much higher than that of the other natural and synthetic refrigerants mentioned. On one hand, this means that for CO2 cycles, components must be redesigned.
Which is the advantage of CO2 R 744 as refrigerant in Transcritical cycle?
Properties of CO2 (R-744) compared with those of R-134a and R-404A. Other principal benefits of CO2 are that it is a natural substance, it is cheap, readily available, not poisonous in any common concentration, and nonflammable. At prices a bit over $1 per pound, it is truly an inexpensive refrigerant.
Is R22 still available?
When the phase-out is complete in 2020, R22 refrigerant will no longer be available. R22 refrigerant, sometimes known as R22 Freon or HCFC-22 Freon, is an environmental danger because it contributes to the depletion of the ozone layer.