Controller for the fan speed in cooling towers
This model describes a simple cooling tower speed controller for
a chilled water system with integrated waterside economizers.
The control logics are described in the following:
- When the system is in Fully Mechanical Cooling (FMC) mode,
the cooling tower fan speed is controlled to maintain the condener water supply temperature (CWST)
at or around the setpoint.
- When the system is in Partially Mechanical Cooling (PMC) mode,
the cooling tower fan speed is set as 100% to make condenser water
as cold as possible and maximize the waterside economzier output.
- When the system is in Free Cooling (FC) mode,
the cooling tower fan speed is controlled to maintain the chilled water supply temperature (CHWST)
at or around its setpoint.
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July 30, 2017, by Yangyang Fu:
First implementation.
Generated at 2026-02-21T19:13:51Z
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