Composition of refrigerant mixtures for high back pressure condition
AssigneeACM Tech
InventorSeung-Yon Cho
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Abstract
There is provided a composition of refrigerant mixtures for high back pressure condition, comprising propane, propylene or 1,1-difluoroethane and, optionally, additive selected from the group consisting of carbon dioxide, trifluoromethyl iodide and mixture thereof. The composition according to the present invention is environment-friendly and can be directly drop in the conventional refrigerator system adopting HCFC-22 refrigerant without any systemic change.
Claims4
A refrigerant composition for use in high back pressure condition, containing a refrigerant and an additive, wherein a) the refrigerant is mixture of propane and propylene, the content of the propane is in an amount of 20˜45 wt %, the content of the propylene is in an amount of 55˜80 wt % and the sum of the propane and the propylene is 100 wt % based on the total weight of the refrigerant, b) the additive is selected from the group consisting carbon dioxide (CO2), trifluoromethyl iodide (CF3I) and mixture thereof, the content of the additive is in an amount of less than 5 wt % based on the refrigerant, and c) the refrigerant composition shows an azeotropic behavior.
A refrigerant composition for use in high back pressure condition, containing a refrigerant and an additive, wherein a) the refrigerant is a mixture of propane and 1,1-difluoroethane, the content of the propane is in amount of 50˜70 wt %, the content of the 1,1-difluoroethane is in an amount of 30˜50 wt % and the sum of the propane and the 1,1-difluoroethane is 100% based on the total weight of the refrigerant, b) the additive is selected from the group consisting of carbon dioxide (CO2), trifluoromethyl iodide (CF3I) an mixture thereof, the content of the additive is in an amount of less than 5 wt % based on the refrigerant, and c) the refrigerant composition shows an azeotropic behavior.
Dependencies are inferred from the claim text.