Turbo chiller control device, turbo chiller control method, gas turbine plant, and rebuilding method of existing gas turbine plant

摘要

PPROBLEM TO BE SOLVED: To provide a turbo refrigerator control device capable of efficiently driving a plurality of turbo refrigerators by the minimum power, a turbo refrigerator control method, and a gas turbine plant. PSOLUTION: The turbo refrigerator control device 7 for controlling a plurality of the turbo refrigerators 5 comprises an enthalpy difference calculation means 13 for calculating enthalpy difference H between the present temperature of object gas and cooling target temperature based on temperature/humidity information of the obtained object gas and the set cooling target temperature, an operating-number decision means 15 for calculating the number N of operating turbo refrigerators 5 necessary for making the temperature of the object gas to the cooling target temperature by dividing the enthalpy difference H by rated cooling capacity of the turbo refrigerator 5, and a driving instruction means 16 for calculating necessary refrigerating capacity Ri assigned to each of a plurality of turbo refrigerators 5 from the calculated enthalpy difference H and the operation number N. PCOPYRIGHT: (C)2011,JPO&INPIT