System and method for retrofitting a refrigeration system from HCFC to HFC refrigerant
AssigneeHudson Technologies, Inc.
InventorCharles Harkins
Life of this patent
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Abstract
A system and method for retrofitting a refrigeration system containing an HCFC refrigerant and a compatible lubricant, with an HFC refrigerant, comprising providing a transport container containing a mixture of about 5-15% by weight of a miscible lubricant and the HFC refrigerant, removing the HCFC refrigerant from the refrigeration system while maintaining at least a portion of a lubricant immiscible with the HFC refrigerant, and charging the refrigeration system with the mixture.
Claims20
A kit for retrofitting a refrigeration system from an HCFC refrigerant mixed with a compressor lubricant consisting of a mineral oil or alkyl benzene lubricant, to an HFC refrigerant compatible with a polyol ester lubricant, comprising:
- a U.S. Department of Transportation compliant refrigerant transport container;
- and
- an HFC refrigerant mixed with a compatible hygroscopic polyol ester compressor lubricant, in an amount of 5-20% by weight of the HFC refrigerant, within the U.S. Department of Transportation compliant transport container.
A U.S. Department of Transportation compliant transport container containing a mixture of an HFC refrigerant mixed with a compatible polyol ester compressor lubricant, in an amount of 5-20% by weight of the HFC refrigerant.
A method for retrofitting a refrigeration system from an HCFC refrigerant mixed with a mineral oil or alkyl benzene lubricant to an HFC refrigerant, comprising:
- withdrawing all of the HCFC refrigerant from the refrigeration system and removing a portion of the mineral oil or alkyl benzene lubricant through a charge port of the refrigeration system, while leaving a portion of the mineral oil or alkyl benzene lubricant within the refrigeration system in an amount of at least 5% by weight of the HCFC refrigerant;
- providing a U.S. Department of Transportation compliant transport container containing an HFC refrigerant mixed with a compatible hygroscopic polyol ester compressor lubricant, in an amount of 5-20% by weight of the HFC refrigerant;
- and
- charging the refrigeration system through the charge port with the HFC refrigerant mixed with the compatible hygroscopic polyol ester compressor lubricant, in the amount of 5-20% by weight of the HFC refrigerant.
Dependencies are inferred from the claim text.