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US 6,640,841 B2Granted
Method of introducing refrigerants into refrigeration systems
AssigneeHoneywell International Inc.
InventorsRaymond H. P. Thomas, Roy P. Robinson, Rajiv R. Singh, David P. Wilson
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Abstract
Provided are methods of charging refrigerants into refrigeration systems. The present methods involve recharging a refrigerant system that contains a chlorine-containing refrigerant and a lubricant 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 the system a composition comprising: (i) a refrigerant; (ii) a surfactant; and (iii) a solubilizing agent.
Claims17
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.
4 more elements
Dependencies are inferred from the claim text.