COOLING CIRCUIT WITH TWO TEMPERATURES Russian patent published in 2009 - IPC F25B1/10 

FIELD: heating systems.

SUBSTANCE: combined cooling circuit (2) with mean and low temperature is intended for cooling agent circulation in the specified flow direction and includes, in flow direction, heat extracting heat exchanger (4), consumer (6) of cooling with mean temperature, intermediate pressure steam separator (8) having steam section (10) and liquid section (12) connected to consumer (6) of cooling with mean temperature, consumer (14) of cooling with low temperature, compressor module (16) the inlet hole of which is connected to steam section (10) of intermediate pressure steam separator (8) and consumer (14) of cooling with low temperature, intermediate pressure expansion device (70) and intermediate pressure steam separator (72). Intermediate pressure expansion device (70) is connected to liquid section (12) of intermediate pressure steam separator (8). Liquid section (76) of intermediate pressure steam separator (72) is connected to consumer (14) of cooling with low temperature, and steam section (74) of intermediate pressure steam separator (72) is connected to compressor module (16).

EFFECT: increasing efficiency.

18 cl, 2 dwg