Patent ID: 11874056
Assignee: JGC CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC F  G | IPC F  G

Claim 4:
5. The operation guidance searching method according to claim 1,
wherein the process variables other than the compression power of the compressor include process variables selected from a process variable group consisting of a temperature of the natural gas on an inlet side of the liquefying heat exchanger, a temperature of the liquefying refrigerant on the inlet side of the liquefying heat exchanger, and a discharge pressure at which the compressor discharges the liquefying refrigerant, and
wherein the manipulated variables include manipulated variables selected from an manipulated variable group consisting of a gas flow rate of the liquefying refrigerant, a liquid flow rate of the liquefying refrigerant, composition of the liquefying refrigerant, the number of rotations of a rotary driver in a case in which the compressor is driven by the rotary driver, and an opening degree of an inlet guide vane of the compressor.