Refrigerant blend free of R-22 for use in ultralow temperature refrigeration
AssigneeIntermagnetics General Corporation-Polycold Systems, Inc.
InventorsKevin P. Flynn, Mikhail Boiarski, Tamirisa V.V.R. Apparao, Oleg Podtcherniaev, Vladimir Mogorichny
Life of this patent
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Abstract
Refrigerants containing R-22 are replaced with new blends by using R-125, or R-125 with R-124, or R-218, or R-218 with R-124, in place of R-22. No hardware or oil composition changes are required to maintain temperatures, pressures and capacity substantially unchanged in a refrigeration system.
Claims21
Refrigerant blends not containing R-22 for use in a refrigeration system, said refrigerant blends comprising:
- 1 Component Range in mol fraction A 0.01 to 0.45 B 0.00 to 0.40 C 0.00 to 0.30 D 0.10 to 0.35 E 0.00 to 0.35 F 0.00 to 0.25 G 0.00 to 0.25
- where A is R-123;
- B is R-23;
- C is R-170;
- D is R-14;
- E is Argon;
- F is R-124;
- G is R-125.
Refrigerant blends not containing R-22, for use in a refrigeration system, said refrigerant blends comprising:
- 2 Component Range in mol fraction A 0.01 to 0.45 B 0.00 to 0.40 C 0.00 to 0.30 D 0.10 to 0.35 E 0.00 to 0.35 F 0.00 to 0.25 H 0.00 to 0.20
- where A is R-123;
- B is R-23;
- C is R-170;
- D is R-14;
- E is Argon;
- F is R-124;
- H is R-218.
A refrigerant blend free of R-22 and replacing R-22 in refrigeration cycles where R-22 has been conventionally used, comprising:
- at least five components taken from the group consisting of R-123, R-124, R-218, R-23, R-170, R-12 and Argon.
Dependencies are inferred from the claim text.