Lower GWP refrigerant compositions

A non-flammable refrigerant composition for a HVACR system, the non-flammable refrigerant composition comprising:

• about 54.8 wt %, or greater than 0 wt % and less than 54.8 wt % of R1234ze(E) refrigerant;
• from about 4.5 wt % to about 91 wt % of CF3I;
• and
• from about 1.9 wt % to about 46 wt % of R134a refrigerant, wherein
• the non-flammable refrigerant composition has a GWP of less than 600 and a capacity that is equal to or greater than 90% of a capacity of R134a refrigerant alone.

A non-flammable refrigerant composition for a HVACR system, the non-flammable refrigerant composition comprising:

• R152a refrigerant from about 1% to about 30% by weight of the non-flammable refrigerant composition;
• CF3I from about 33.9% to about 78.6% by weight of the non-flammable refrigerant composition;
• and
• R134a refrigerant being about 46% by weight or less than 46% by weight of the non-flammable refrigerant composition, wherein
• the non-flammable refrigerant composition has a GWP of less than 600, a capacity that is equal to or greater than 90% of a capacity of R134a refrigerant alone, and a temperature glide that is equal to or less than 1.0° C.

A method of making a refrigerant composition for a HVACR system, the method comprising:

• mixing an amount of a first refrigerant, an amount of CF3I, and an amount of R134a refrigerant, wherein
• the first refrigerant is one of:
• R152a refrigerant, such that the refrigerant composition includes from about 1 wt % to about 30 wt % of the R152a refrigerant from about 33.9 wt % to about 78.6 wt % of the CF3I;
• and about 46 wt %, or less than 46 wt % and greater than 0 wt % of the R134a refrigerant,
• R1234yf refrigerant, such that the refrigerant composition includes from about 2 wt % to about 68 wt % of the R1234yf refrigerant about 63.7 wt %, or greater than 0 wt % and less than 63.7 wt % of the CF3I;
• and from about 9.8 wt % to about 46 wt % of the R134a refrigerant, or
• R1234ze(E) refrigerant, such that the refrigerant composition includes about 54.8 wt %, or greater than 0 wt % and less than 54.8 wt % of the R1234ze(E) refrigerant;
• from about 4.5 wt % to about 91 wt % of CF3I;
• and from about 1.9 wt % to about 46 wt % of the R134a refrigerant,
• the refrigerant composition is non-flammable and has a GWP of less than 600 and a capacity that is equal to or greater than 90% of a capacity of R134a refrigerant alone.

A method of retrofitting a refrigerant composition in an HVACR system, comprising:

• adding one or more compounds to the refrigerant composition resulting in a retrofitted refrigerant composition that is one of:
• a first retrofitted refrigerant composition including:
• from about 1 wt % to about 30 wt % of R152a refrigerant;
• from about 33.9 wt % to about 78.6 wt % of CF3I;
• and about 46 wt %, or greater than 0 wt % and less than 46 wt % of R134a refrigerant, or
• a second retrofitted refrigerant composition including:
• from about 2 wt % to about 68 wt % of R1234yf refrigerant;
• about 63.7 wt %, or greater than 0 wt % and less than 63.7 wt % of the CF3I;
• and from about 9.8 wt % to about 46 wt % of the R134a refrigerant, or
• a third retrofitted refrigerant composition including:
• about 54.8 wt %, or greater than 0 wt % and less than 54.8 wt % of R1234ze(E);
• from about 4.5 wt % to about 91 wt % of the CF3I;
• and about 1.9 wt % to about 46 wt % of the R134 refrigerant, wherein
• when the retrofitted refrigerant composition is the first retrofitted refrigerant composition, and the refrigerant composition including the R134a refrigerant, adding one or more compounds includes:
• adding an amount of the CF3I so that the retrofitted refrigerant composition is non-flammable, and
• adding an amount of the R152a refrigerant so that a GWP of the retrofitted refrigerant composition is less than 600, or
• when the retrofitted refrigerant composition is the first retrofitted refrigerant composition, and the refrigerant composition including the R152a refrigerant and the CF3I, adding one or more compounds includes:
• adding an amount of the R134a refrigerant to address capacity, the amount of the R134a refrigerant being selected so that a GWP of the retrofitted refrigerant composition is less than 600, or
• when the retrofitted refrigerant composition is the second retrofitted refrigerant composition or the third retrofitted refrigerant composition, and the refrigerant composition including the R134a refrigerant, adding one or more compounds includes:
• adding an amount of the CF3I to the refrigerant composition so that the retrofitted refrigerant composition is non-flammable, and
• adding an amount of the R1234yf refrigerant or the R1234ze(E) refrigerant to the refrigerant composition so that a GWP of the retrofitted refrigerant composition is less than 600, or
• when the retrofitted refrigerant composition is the second retrofitted refrigerant composition or the third retrofitted refrigerant composition, and the refrigerant composition including the CF3I and the R1234yf refrigerant or the R1234ze(E) refrigerant and the CF3I, adding one or more compounds includes:
• adding an amount of the R134a refrigerant to address capacity, the amount of the R134a being selected so that a GWP of the retrofitted refrigerant composition is less than 600, and
• wherein the retrofitted refrigerant composition is non-flammable and has a capacity that is equal to or greater than 90% of a capacity of R134a refrigerant alone.