Climate control systems for use with high glide working fluids and methods for operation thereof

A method for operating a climate control system that circulates a working fluid comprising a refrigerant blend having high glide, the method comprising:

• pressurizing a working fluid vapor by passing it through a compressor in a fluid conduit;
• pressurizing a working fluid liquid by passing it through a pump;
• condensing at least a portion of the working fluid in a first heat exchanger disposed downstream of the compressor where heat is exchanged with passing air in the first heat exchanger, wherein the working fluid vapor is received directly from the compressor into the first heat exchanger and the working fluid liquid is received directly from the pump into the first heat exchanger;
• reducing pressure of the working fluid by passing through an expansion device disposed downstream of the first heat exchanger;
• evaporating at least a portion of the working fluid in a second heat exchanger disposed downstream of the expansion device and upstream of the compressor, where heat is exchanged with passing air in the second heat exchanger;
• and
• passing the working fluid into a gas-liquid separation vessel disposed downstream of the second heat exchanger that separates the working fluid into the working fluid vapor that is directed to the compressor and the working fluid liquid that is directed to the first heat exchanger, wherein the working fluid comprises the refrigerant blend having high glide that comprises a first refrigerant comprising carbon dioxide (R-744) and a second refrigerant, wherein a difference in boiling points between the first refrigerant and the second refrigerant is greater than or equal to about 25° F. at atmospheric pressure.

A method for operating a climate control system that circulates a working fluid comprising a refrigerant blend having high glide, the method comprising:

• pressurizing a working fluid by passing it through a compressor in a fluid conduit;
• pressurizing the working fluid by passing it through a pump;
• partially condensing a portion of the working fluid in a first heat exchanger disposed downstream of the compressor to form a multiphasic working fluid, wherein the portion of working fluid comprises both the working fluid received directly from the compressor into the first heat exchanger and the working fluid received directly from the pump into the heat exchanger;
• reducing pressure of the multiphasic working fluid by passing through an expansion valve disposed downstream of the first heat exchanger;
• partially evaporating a portion of the multiphasic working fluid in a second heat exchanger disposed downstream of the expansion valve and upstream of the compressor;
• and
• passing the multiphasic working fluid into a gas-liquid separation vessel disposed downstream of the second heat exchanger that separates the working fluid into a vapor stream that is directed to the compressor and a liquid stream that is directed to the first heat exchanger, wherein the working fluid comprises the refrigerant blend having high glide that comprises a first refrigerant comprising carbon dioxide (R-744) and a second refrigerant, wherein a difference in boiling points between the first refrigerant and the second refrigerant is greater than or equal to about 25° F. at atmospheric pressure.