Substitute refrigerant for dichlorodifluoromethane refrigeration systems
AssigneeAPD Cryogenics, Inc.
InventorsBoris V. Yudin, Richard Stevenson, Mikhail Boyarsky, Oleg N. Podcherniev
Life of this patent
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Abstract
A mixed gas refrigerant for use as a replacement for CFC refrigerants, and specifically, for R-12, which includes at least three components including R-134a, R-124, and n-butane.
Claims4
A refrigerant composition for use as a substitute for R-12 in R-12 refrigeration apparatus, comprising a mixture of:
- (i) 61-65 molar % of R-134a;
- (ii) 28-32 molar % of R-124;
- and
- (iii) 4-9 molar % of n-butane.
A refrigerant composition for use as a substitute for R-12 in R-12 refrigeration apparatus, comprising a mixture of:
- (i) 53-57 molar % of R-134a;
- (ii) 35-39 molar % of R-124;
- and
- (iii) 6-10 molar % of n-butane.
A refrigerant composition for use as a substitute for R-12 in R-12 refrigeration apparatus, consisting of a mixture of:
- (i) 61-65 molar % of R-134a;
- (ii) 28-32 molar % of R-124;
- and
- (iii) 5-9 molar % n-butane.
A refrigerant composition for use as a substitute for R-12 in R-12 refrigeration apparatus, consisting of a mixture of:
- (i) 53-57 molar % of R-134a;
- (ii) 35-39 molar % of R-124;
- and
- (iii) 6-10 molar % n-butane.
Dependencies are inferred from the claim text.