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US 6,438,994 B1Granted
Method for providing refrigeration using a turboexpander cycle
AssigneePraxair Technology, Inc.
InventorsMohammad Abdul-Aziz Rashad, Kenneth Kai Wong, Henry Edward Howard, Dante Patrick Bonaquist, Bayram Arman
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Abstract
A method for generating refrigeration using a turboexpander or reverse Brayton cycle which can more efficiently generate refrigeration especially to cryogenic temperatures using a defined refrigerant mixture containing argon and/or nitrogen.
Claims18
A method for producing refrigeration employing a turboexpander cycle comprising:
- (A) compressing a refrigerant mixture comprising at least one component from the group consisting of argon and nitrogen, and at least one component having a normal boiling point within the range of from −100 F. to −260 F.;
- (B) cooling the compressed refrigerant mixture;
- (C) turboexpanding the cooled compressed refrigerant mixture to provide a two phase turboexpanded refrigerant mixture;
- and
- (D) warming the turboexpanded refrigerant mixture to provide refrigeration to a heat load.
2 more elements
A method for producing refrigeration employing a turboexpander cycle comprising:
- (A) compressing a refrigerant mixture comprising at least one component from the group consisting of argon and nitrogen, and at least one component from the group consisting of helium and neon;
- (B) cooling the compressed refrigerant mixture;
- (C) turboexpanding the cooled compressed refrigerant mixture to provide a two phase turboexpanded refrigerant mixture;
- and
- (D) warming the turboexpanded refrigerant mixture to provide refrigeration to a heat load.
2 more elements
Dependencies are inferred from the claim text.