AUTOMATED SYSTEM TEMPERATURE CONTROL ELECTRIC chilled water cooling towers

摘要

Automated system for regulating the chilled water temperature electric fan of the cooling tower can be used in industrial plants, where for cooling the circulating water cooling towers are used. The system includes a drive circuit for the frequency converter - induction motor drive control system and the sensor system. The automatic control system implements control of the electric drive frequency of the perturbation, calculating the necessary compensation for external influences the magnitude of the control signal, and from the deviation, by introducing a correction for the temperature feedback signal. The technical effect is to secure fan start automation control for process cooling water and the stabilization of its temperature at a desired level, which leads to strict adherence to the process conditions and to improve the productivity and product quality. 1 yl.