Lower GWP refrigerant compositions

Patent metadata

Field	Value
Publication number	US-10655039-B2
Application number	US-201715859159-A
Country	US
Kind code	B2
Filing date	Dec 29, 2017
Priority date	Dec 29, 2017
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

A refrigerant composition for an HVACR system that includes R1123 refrigerant, R32 refrigerant, and CF3I. The refrigerant composition having a capacity greater than 85% of a capacity of R410 or a capacity of R32. A method of making a refrigerant composition for a HVACR system is also disclosed. The method includes mixing an amount of R1123, an amount of R32, and an amount of CF3I. A method of retrofitting a refrigerant composition that results in the refrigerant composition is disclosed.

First claim

What is claimed is:

1. A refrigerant composition for an HVACR system having a refrigerant portion consisting of:
R1123 refrigerant;
R32 refrigerant; and
from at or about 32 wt % to at or about 65 wt % of CF 3 I, wherein the refrigerant portion is nonflammable, has a capacity that is about or greater than 85% of a capacity of R410A refrigerant, and has a GWP of about or less than 300, and
the refrigerant composition optionally includes one or more impurities, lubricants, refrigeration systems additives, tracers, ultraviolet dyes, and solubilizing agents.

2. The refrigerant composition of claim 1 , wherein the refrigerant portion has a capacity that is about or greater than 90% of the capacity of R410A refrigerant.

3. The refrigerant composition of claim 1 , wherein the refrigerant portion has a temperature glide of about or less than 10° F.

4. The refrigerant composition of claim 1 , wherein a ratio of the R1123 refrigerant to the R32 refrigerant (R1123:R32) by weight in the refrigerant portion is from at or about 60:40 to at or about 40:60.

5. The refrigerant composition of claim 1 , wherein the refrigerant portion has a capacity that is about or greater than 85% of a capacity of R32 refrigerant alone.

6. The refrigerant composition of claim 5 , wherein the refrigerant portion has a capacity that is about or greater than 90% of the capacity of R32 refrigerant alone.

7. The refrigerant composition of claim 5 , wherein the refrigerant portion has a temperature glide of about or less than 10° F.

8. A method of making a refrigerant composition for a HVACR system, the method including:
mixing an amount of R1123 refrigerant, an amount of R32 refrigerant, and an amount of CF 3 I, wherein
the refrigerant composition has a refrigerant portion consisting of the R1123 refrigerant, the R32 refrigerant, and from at or about 32 wt % to at or about 65 wt % of the CF 3 I,
the refrigerant portion is nonflammable, has a capacity that is about or greater than 85% of a capacity of R410A refrigerant, and has a GWP of about or less than 300, and
the refrigerant composition optionally includes one or more impurities, lubricants, refrigeration systems additives, tracers, ultraviolet dyes, and solubilizing agents.

9. The method of claim 8 , wherein the refrigerant portion has a capacity that is about or greater than 85% of a capacity of R32 refrigerant alone.

10. The method of claim 8 , wherein the refrigerant portion has a temperature glide of about or less than 10° F.

11. A method of retrofitting a refrigerant composition in an HVACR system, comprising:
adding one or more of an amount of R1123 refrigerant, an amount of R32 refrigerant, and an amount of CF 3 I to an existing refrigerant composition to produce a retrofitted refrigerant composition, the retrofitted refrigerant having a refrigerant portion consisting of the R1123 refrigerant, the R32 refrigerant, and from at or about 32 wt % to at or about 65 wt % of the CF 3 I, wherein
the existing refrigerant composition comprises at least one of R32 refrigerant and R1123 refrigerant,
the refrigerant portion is nonflammable, has a capacity that is about or greater than 85% of a capacity of R410A, and has a GWP of about or less than 300, and
the retrofitted refrigerant composition optionally includes one or more impurities, lubricants, refrigeration systems additives, tracers, ultraviolet dyes, and solubilizing agents.

12. The method of claim 11 , wherein the refrigerant portion has a temperature glide of about or less than 10° F.

Assignees

• Trane Int Inc

Inventors

• Schultz Kenneth J
• Kujak Stephen A

Classifications

• C09K5/044 Primary

  comprising halogenated compounds · CPC title

• C09K2205/22

  All components of a mixture being fluoro compounds · CPC title

• C09K2205/126

  Unsaturated fluorinated hydrocarbons · CPC title

• C09K5/045

  containing only fluorine as halogen · CPC title

• C09K2205/122

  Halogenated hydrocarbons · CPC title