METHOD FOR OPERATION AND COMPRESSION REFRIGERATING PLANT WITH STEAM COMPRESSION UP TO SUPER-HIGH PARAMETERS Russian patent published in 2003 - IPC

FIELD: refrigerating plants. SUBSTANCE: operation of the compression refrigerating plant represents a multistage compression of refrigerant with its intermediate cooling, cooling in the heat exchanger-chiller, expansion in the gas-expansion machine and separation into the primary liquid refrigerant and into the primary steam of the refrigerant in the separator of the primary liquid refrigerant. The primary liquid refrigerant is cooled, refrigerant expanded and separated into the secondary liquid refrigerant and secondary steam of the refrigerant in the separator of the secondary liquid refrigerant. The primary steam is gas-expanded and also separated. The secondary liquid refrigerant is mixed with the secondary one after its expansion and directed to the evaporator. The secondary steam is mixed with the steam formed after gas expansion, and with steam after the evaporator. After that the primary liquid refrigerant is cooled by the obtained mixture. The heated mixture is directed for compression to supercritical parameters to the first compressor. EFFECT: enhanced thermodynamic efficiency of operation of the compression refrigerating plant. 2 cl, 3 dwg