Importance

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Abstract

There is provided a refrigerant circuit comprising a compressor (10), a condenser or gas cooler (12), an ejector (16) with a high-pressure connection and a suction connection, a pre-evaporator (18), a separator (20) with a liquid phase output and a gas phase output, a low-temperature evaporator (28) which is arranged between the liquid phase output of the separator (20) and the suction connection, and a superheating evaporator (24) which is arranged between the gas phase output of the separator (20) and the suction side of the compressor (10). A method for operating a refrigerant circuit provides for expanding condensed or supercritical refrigerant in an ejector (16), then pre-evaporating it, then separating the predominantly liquid phase from the predominantly gaseous phase, further evaporating the predominantly liquid phase and supplying it to a suction connection of the ejector (18), and completely evaporating the predominantly gaseous phase before supplying it to a compressor (10).

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First Claim