A Temperature Control System for Water Cooling Towers Based on Variable Speed Drives

摘要

This paper presents an industrial implemented technical solution to increase the efficiency of electrical energy utilization in the chemical industry, by using frequency converters for automatic control of water cooling tower fans, based on a feedback from the water temperature from the cooling circuit. There is presented a practical application and the energy savings resulted on an installation for water re-circulation. The technical solution leads to an increase of the electric energy efficiency in chemical industry by using frequency converters to control speed and torque of cooling water fans equipped with squirrel cage motors, controlled from a water temperature location in cooling water circuit.