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On the automatic control of cooling tower exhaust fans

2016-01-06View Original

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The fans in our plant’s cooling towers were previously connected directly to the frequency converter, and when it was necessary to change the speed, manual intervention was required to adjust the frequency. Now we want to automatically adjust the fan speed based on the inlet water temperature of the cooling tower. I plan to add a temperature sensor and a PID regulator, and connect them to the frequency converter. I’m not sure how to set this up; I would appreciate any guidance from those who are more experienced

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