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Cooling Tower Fans - Traditional Solution

Application Description | New standard | Energy Savings
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Traditional Solution
Based on the temperature of the condenser water leaving the cooling tower, the fans are cycled on and off. To limit the number of times the fan motors are powered on and off, wide temperature control bands are established. When the temperature exceeds the high limit, a fan is staged on, and then staged off upon reaching the low temperature limit. As the wet bulb temperature or system load decreases, the duty cycle of the cooling tower fan also decreases, within the limits of the on-off control temperature band. While applications with tower bypass valves may provide adequate temperature control, they are very wasteful of energy.

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