Low global warming potential refrigerants in liquid chillers
AssigneeTrane International Inc.
InventorsStephen A. Kujak, Kenneth J. Schultz
Life of this patent
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Abstract
A refrigeration system is disclosed. The system includes a compressor, a condenser, an expansion device, and an evaporator fluidly connected to form a refrigeration circuit. A refrigerant composition including an environmentally-suitable chiller refrigerant that has a 100 year direct global warming potential (GWP) of less than 150 is included. The refrigerant composition includes a mixture including R-1336mzz-(Z) and R-1130-(E), wherein an amount of R-1336mzz-(Z) in the mixture is in a range from at or about 69% by weight to at or about 81% by weight, and an amount of R-1130-(E) in the mixture is in a range from at or about 31% by weight to at or about 19% by weight.
Claims17
A refrigeration system, comprising:
- a negative pressure liquid chiller, including a compressor, a condenser, an expansion device, and an evaporator fluidly connected to form a refrigeration circuit, and further including a purge;
- and
- a refrigerant composition configured as a low pressure refrigerant and including an environmentally-suitable chiller refrigerant that has a 100 year direct global warming potential (GWP) of less than 150, the refrigerant composition including a mixture including R-1336mzz-(Z) and R-1130-(E), wherein an amount of R-1336mzz-(Z) in the mixture is in a range from at or about 69% to at or about 81%, and an amount of R-1130-(E) in the mixture is in a range from at or about 31% to at or about 19%.
A method of charging a chiller system, comprising:
- removing an existing refrigerant from the chiller system, wherein the chiller system is a negative pressure liquid chiller including a purge;
- replacing the existing refrigerant with an environmentally friendly refrigerant composition that includes a mixture of R-1336mzz-(Z) and R-1130-(E) the environmentally friendly refrigerant composition configured as a low pressure refrigerant.
Dependencies are inferred from the claim text.