Lower GWP refrigerant compositions

Patent metadata

Field	Value
Publication number	US-11220620-B2
Application number	US-202016891900-A
Country	US
Kind code	B2
Filing date	Jun 3, 2020
Priority date	Dec 29, 2017
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

Refrigerant compositions for an HVACR system that includes R1123, R32 and at least one more refrigerant. The refrigerant composition has a reduced GWP of about or less than 1500. Some of the refrigerant composition may be suitable for replacing R410A, R32, and/or R22. Methods for making the refrigerant composition including mixing an amount of R1123, and amount of R32, and an amount of at least one more refrigerant. Methods of retrofitting an existing refrigerant composition include adding an amount of at least one refrigerant to an existing refrigerant composition to produce a retrofitted refrigerant composition. The retrofitted refrigerant composition includes at least R1123 and R32.

First claim

What is claimed is:

1. A refrigerant composition for an HVACR system comprising:
from about 8 wt % to about 80 wt % of R1123 refrigerant;
from about 10 wt % to about 80 wt % of R32 refrigerant;
at or about 49 wt %, or less than 49 wt % and greater than 0 wt % of R1234yf refrigerant; and
at or about 62 wt %, or less than 62 wt % and greater than 0 wt % of CF 3 I, wherein
the refrigerant composition has a capacity that is greater than 85% of the capacity of R410A refrigerant alone.

2. The refrigerant composition of claim 1 , wherein the CF 3 I is from about 30 wt % to about 62 wt % of the refrigerant composition, the refrigerant composition being nonflammable.

3. The refrigerant composition of claim 1 , wherein
the R32 refrigerant is from about 10 wt % to about 54 wt % of the refrigerant composition,
the R1123 refrigerant is from about 8 wt % to about 54 wt % of the refrigerant composition,
the R1234yf refrigerant is at or about 27 wt %, or greater than 0 wt % and less than 27 wt % of the refrigerant composition,
the CF 3 I is from about 30 wt % to about 62 wt % of the refrigerant composition, and
the refrigerant composition being nonflammable, the GWP of the refrigerant composition being less than 400.

4. The refrigerant composition of claim 1 , wherein
the R32 refrigerant is from about 12 wt % to about 80 wt % of the refrigerant composition,
the R1123 refrigerant is from about 9 wt % to about 80 wt % of the refrigerant composition,
the R1234yf refrigerant is at or about 32 wt %, or greater than 0 wt % and less than 32 wt % of the refrigerant composition,
the CF 3 I is at or about 39 wt %, or greater than 0 wt % and less than 39 wt % of the refrigerant composition, and
the refrigerant composition having a capacity that is greater than 85% of the capacity of R32 refrigerant alone.

5. The refrigerant composition of claim 4 , wherein
the R32 refrigerant is from about 12 wt % to about 54 wt % of the refrigerant composition,
the R1123 refrigerant is from about 9 wt % to about 54 wt % of the refrigerant composition,
the R1234yf refrigerant is at or about 17 wt %, or greater than 0 wt % and less than 17 wt % of the refrigerant composition,
the CF 3 I is from about 31 wt % to about 53 wt % of the refrigerant composition, and
the refrigerant composition being nonflammable.

6. The refrigerant composition of claim 1 , wherein the refrigerant portion of the refrigerant composition consists of the R32 refrigerant, the R1123 refrigerant, the R1234yf refrigerant, and the CF 3 I.

7. A method of making a refrigerant composition for a HVACR system, the method including:
mixing at least an amount of R1123 refrigerant, an amount of R32 refrigerant, an amount of R1234yf refrigerant, and an amount of CF 3 I to obtain a refrigerant composition, wherein
the R1123 refrigerant is from 8 wt % to about 80 wt % of the refrigerant composition,
the R32 refrigerant is from about 10 wt % to about 80 wt % of the refrigerant composition,
the R1234yf refrigerant is at or about 49 wt %, or less than 49 wt % and greater than 0 wt % of the refrigerant composition,
the CF 3 I is at or about 62 wt %, or less than 62 wt % and greater than 0 wt % of the refrigerant composition, and
the refrigerant composition has a GWP that is about 1500 or less than 1500 and has a capacity that is greater than 85% of the capacity of R410A refrigerant alone.

8. The method of claim 7 , wherein the CF 3 I is from about 30 wt % to about 62 wt % of the refrigerant composition, the refrigerant composition being nonflammable.

9. The method of claim 7 , wherein
the R32 refrigerant is from about 10 wt % to about 54 wt % of the refrigerant composition,
the R1123 refrigerant is from about 8 wt % to about 54 wt % of the refrigerant composition,
the R1234yf refrigerant is at or about 27 wt %, or greater than 0 wt % and less than 27 wt % of the refrigerant composition,
the CF 3 I is from about 30 wt % to about 62 wt % of the refrigerant composition, and
the refrigerant composition being nonflammable, the GWP of the refrigerant composition being less than 400.

10. The method of claim 7 , wherein
the R32 refrigerant is from about 12 wt % to about 80 wt % of the refrigerant composition,
the R1123 refrigerant is from about 9 wt % to about 80 wt % of the refrigerant composition,
the R1234yf refrigerant is at or about 32 wt %, or greater than 0 wt % and less than 32 wt % of the refrigerant composition,
the CF 3 I is at or about 39 wt %, or greater than 0 wt % and less than 39 wt % of the refrigerant composition, and
the refrigerant composition having a capacity that is greater than 85% of the capacity of R32 refrigerant alone.

11. The method of claim 10 , wherein
the R32 refrigerant is from about 12 wt % to about 54 wt % of the refrigerant composition,
the R1123 refrigerant is from about 9 wt % to about 54 wt % of the refrigerant composition,
the R1234yf refrigerant is at or about 17 wt %, or greater than 0 wt % and less than 17 wt % of the refrigerant composition,
the CF 3 I is from about 31 wt % to about 53 wt % of the refrigerant composition, and
the refrigerant composition being nonflammable.

12. The method of claim 7 , wherein the refrigerant portion of the refrigerant composition consists of the R32 refrigerant, the R1123 refrigerant, the R1234yf refrigerant, and the CF 3 I.

13. A method of retrofitting a refrigerant composition in an HVACR system, comprising:
adding an amount of at least one refrigerant to an existing refrigerant composition to produce a retrofitted refrigerant composition, the retrofitted refrigerant composition including R1123 refrigerant, R32 refrigerant, R1234yf refrigerant, and CF 3 I, wherein
the existing refrigerant composition includes at least one of R32 refrigerant, R1123 refrigerant, and R1234yf refrigerant,
the R32 refrigerant is from about 10 wt % to about 80 wt % of the retrofitted refrigerant composition,
the R1123 refrigerant is from about 8 wt % to about 80 wt % of the retrofitted refrigerant composition,
the R1234yf refrigerant is at or about 49 wt %, or greater than 0 wt % and less than 49 wt % of the retrofitted refrigerant composition,
the CF 3 I is at or about 62 wt %, or less than 62 wt % and greater than 0 wt % of the retrofitted refrigerant composition, and
the retrofitted refrigerant composition has a GWP that is about 1500 or less than 1500 and having a capacity that is greater than 85% of the capacity of R410A refrigerant alone.

14. The method of claim 13 , wherein the CF 3 I is from about 30 wt % to about 62 wt % of the retrofitted refrigerant composition, the retrofitted refrigerant composition being nonflammable.

15. The method of claim 13 , wherein
the R32 refrigerant is from about 10 wt % to about 54 wt % of the retrofitted refrigerant composition,
the R1123 refrigerant is from about 8 wt % to about 54 wt % of the retrofitted refrigerant composition,
the R1234yf refrigerant is at or about 27 wt %, or greater than 0 wt % and less than 27 wt % of the retrofitted refrigerant composition,
the CF 3 I is from about 30 wt % to about 62 wt % of the retrofitted refrigerant composition,
the retrofitted refrigerant composition being nonflammable, and
the GWP of the retrofitted refrigerant composition being less than 400.

16. The method of claim 13 , wherein
the R32 refrigerant is from about 12 wt % to about 80 wt % of the retrofitted refrigerant composition,
the R1123 refrigerant is from about 9 wt % to about 80 wt % of the retrofitted refrigerant composition,
the R1234yf refrigerant is at or about 32 wt %, or greater than 0 wt % and less t

Assignees

• Trane Int Inc

Inventors

• Schultz Kenneth J
• Kujak Stephen A

Classifications

• C09K2205/22

  All components of a mixture being fluoro compounds · CPC title

• C09K2205/40

  Replacement mixtures · CPC title

• F25B45/00

  Arrangements for charging or discharging refrigerant · CPC title

• C09K2205/122

  Halogenated hydrocarbons · CPC title

• C09K5/044

  comprising halogenated compounds · CPC title