Climate control systems having a liquid-to-suction heat exchanger, an accumulator, and a receiver for variable liquid storage of high glide working fluids and methods for operation thereof

Abstract

Climate control systems that circulates a refrigerant blend having high glide (difference in boiling points of refrigerants≥25°R (about 14K) at atmospheric pressure) include an accumulator, a compressor, a first heat exchanger for at least partially condensing the refrigerant blend, a liquid-to-suction heat exchanger disposed downstream of the first heat exchanger and upstream of the accumulator, a first expansion device, a receiver, a second expansion device, and a second heat exchanger that at least partially vaporizes the refrigerant blend, and a fluid conduit. A concentration of the refrigerant blend can be controlled by adjusting stored liquid levels in the accumulator and receiver. Methods for operating a climate control system that circulates a working fluid comprising a refrigerant blend having high glide are also provided.