Claims
- 1. A method of charging a refrigeration system comprising the steps of:(a) providing a refrigeration system comprising a chamber having a hydrocarbon-based lubricant and substantially no chlorofluorocarbon refrigerant; and (b) introducing to said chamber a composition comprising: (i) a non-chlorine-containing refrigerant; (ii) a surfactant; and (iii) a polyalkylene glycol lubricant.
- 2. The method of claim 1 wherein said non-chlorine-containing refrigerant comprises an HFC.
- 3. The method of claim 1 wherein said non-chlorine-containing refrigerant is a mixture of two or more HFC compounds.
- 4. The method of claim 1 wherein said non-chlorine-containing refrigerant is R-407C.
- 5. The method of claim 1 wherein said surfactant enhances the solubility of said non-chlorine-containing refrigerant in said hydrocarbon-based lubricant by at least about 2 weight %.
- 6. The method of claim 1 wherein said surfactant enhances the solubility of said non-chlorine-containing refrigerant in said hydrocarbon-based lubricant by at least about 5 weight %.
- 7. The method of claim 1 wherein said surfactant enhances the solubility of said hydrocarbon-based lubricant in said non-chlorine-containing refrigerant by at least about 2 weight %.
- 8. The method of claim 1 wherein said surfactant comprises a polyoxyethylene-type nonionic surfactant.
- 9. The method of claim 4 wherein said surfactant comprises a polyoxyethylene-type nonionic surfactant.
- 10. The method of claim 9 wherein said surfactant is a polyoxyethylene alkyl ether.
- 11. The method of claim 1 wherein said surfactant is soluble in said solubilizing agent.
- 12. The method of claim 1 wherein said solubilizing agent comprises a polyalkylene glycol.
- 13. The method of claim 12 wherein said polyalkylene glycol comprises a polybutylene glycol compound.
- 14. The method of claim 13 wherein said polybutylene glycol compound has a viscosity of between about 1 and 20 centistokes at 100° C.
- 15. The method of claim 14 wherein said polybutylene glycol compound has a viscosity of between about 1 and 10 centistokes at 100° C.
- 16. The method of claim 15 wherein said polybutylene glycol compound has a viscosity of between about 1 and 5 centistokes at 100° C.
- 17. The method of claim 4 wherein said solubilizing agent is an ester or polyvinyl ether.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a divisional of U.S. patent application Ser. No. 09/943,063 now U.S. Pat. No. 6,516,837 which was filed on Aug. 30, 2001 and which claims the benefit of U.S. Provisional Application No. 60/235,746 filed Sep. 27, 2000.
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Provisional Applications (1)
|
Number |
Date |
Country |
|
60/235746 |
Sep 2000 |
US |