Compositions containing difluoromethane and fluorine substituted olefins
Compositions comprising multi-fluorinated olefins and HFC-32 are disclosed. Such compositions are useful particularly for in stationary refrigeration and air conditioning equipment.
1. A refrigerant for replacing R-404A in a medium temperature or low temperature refrigeration system or for an air conditioning system, said refrigerant consisting of:
(a) from 70% to 80% by weight of 1234yf; and
(b) from 20% to 30% by weight of R-32.
2. An air conditioning system comprising the refrigerant of claim 1 .
3. A stationary air conditioning system comprising the refrigerant of claim 1 .
4. A medium temperature refrigeration system comprising the refrigerant of claim 1 .
5. The medium temperature or a low temperature refrigeration system according to claim 4 wherein said system was a system for use with R-404A.
6. A refrigerant for replacing R-404A in a low temperature or a medium temperature refrigeration system or for an air conditioning system, said refrigerant consisting of:
(a) about 80% by weight of 1234yf; and
(b) about 20% by weight of R-32.
7. An air conditioning system comprising the refrigerant of claim 6 .
8. A stationary air conditioning system comprising the refrigerant of claim 6 .
9. A medium temperature refrigeration system comprising the refrigerant of claim 6 .
10. The medium temperature or the low temperature refrigeration system according to claim 9 wherein said system was a system for use with R-404A.