Lower gwp refrigerant compositions

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.

What is claimed is: 
     
         1 . A refrigerant composition for an HVACR system comprising:
 about 80 wt % or less of R1123 refrigerant;   R32 refrigerant; and   R125 refrigerant, wherein   the refrigerant composition has a GWP that is about 1500 or less than 1500.   
     
     
         2 . The refrigerant composition of  claim 1 , wherein a capacity of the refrigerant composition within a range from about 85% to about 110% of the capacity of R32 refrigerant alone. 
     
     
         3 . The refrigerant composition of  claim 2 , wherein the GWP of the refrigerant composition is about 750 or less than 750. 
     
     
         4 . The refrigerant composition of  claim 2 , wherein the refrigerant composition is nonflammable. 
     
     
         5 . The refrigerant composition of  claim 1 , further comprising:
 CF 3 I.   
     
     
         6 . The refrigerant composition of  claim 5 , wherein a capacity of the refrigerant composition is greater than 85% of the capacity of R32 refrigerant alone. 
     
     
         7 . The refrigerant composition of  claim 6 , wherein the GWP of the refrigerant composition is about 750 or less than 750. 
     
     
         8 . The refrigerant composition of  claim 6 , wherein the refrigerant composition is nonflammable 
     
     
         9 . The refrigerant composition of  claim 2 , further comprising:
 R1234yf refrigerant   
     
     
         10 . The refrigerant composition of  claim 9 , wherein a capacity of the refrigerant composition is about or greater than 85% of the capacity of R32 alone. 
     
     
         11 . The refrigerant composition of  claim 10 , wherein the GWP of the refrigerant composition is about 750 or less than 750. 
     
     
         12 . The refrigerant composition of  claim 10 , wherein the refrigerant composition is nonflammable. 
     
     
         13 . The refrigerant composition of  claim 9 , wherein a capacity of the refrigerant composition is within a range from about 85% to about 110% of the capacity of R22. 
     
     
         14 . The refrigerant composition of  claim 13 , wherein the GWP of the refrigerant composition is about 750 or less than 750. 
     
     
         15 . A method of making a refrigerant composition for a HVACR system, the method including:
 mixing at least an amount of R1123, an amount of R32, and an amount of one or more refrigerants to obtain a refrigerant composition, the at least one more refrigerants including R125 refrigerant, wherein   the amount of R1123 is about or less than 80 wt % of the refrigerant composition, and   the refrigerant composition has a GWP that is about 1500 or less than 1500.   
     
     
         16 . The method of  claim 15 , wherein the one or more refrigerants includes CF 3 I. 
     
     
         17 . The method of  claim 15 , wherein the one or more refrigerants includes R1234yf refrigerant. 
     
     
         18 . 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, and R125 refrigerant, wherein   the existing refrigerant composition includes at least one of R32 refrigerant, R1123 refrigerant, R125 refrigerant, and R1234yf, and   the retrofitted refrigerant composition has a GWP that is about 1500 or less than 1500.   
     
     
         19 . The method of  claim 18 , wherein the retrofitted refrigerant includes the R1123 refrigerant, the R32 refrigerant, the R125 refrigerant, and CF 3 I. 
     
     
         20 . The method of  claim 18 , wherein the retrofitted refrigerant includes the R1123 refrigerant, the R32 refrigerant, the R125 refrigerant, and R1234yf refrigerant.