Method and apparatus for a refrigeration circuit

Abstract

A method and apparatus for a refrigeration circuit is disclosed. In the refrigeration circuit, a single-component or multi-component refrigerant, preferably a nitrogenous refrigerant, in particular nitrogen, circulates, where at least one partial stream of the refrigerant is expanded. The expansion of the refrigerant takes place in at least two expansion turbines that are arranged in series, and the temperature of the refrigerant at the exit of the expansion turbines, or at least at one of the exits of the expansion turbines, is above the saturation temperature of the refrigerant. In this connection, the temperature of the refrigerant at the exit of the expansion turbines, or at least at one of the exits of the expansion turbines, is less than 10° C., preferably less than 5° C., in particular less than 2° C., above the saturation temperature of the refrigerant.

Dependencies are inferred from the claim text.