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.
-
July 30, 2017, by Yangyang Fu:
First implementation.
Generated at 2025-12-13T19:13:59Z
by OpenModelicaOpenModelica 1.25.7 using GenerateDoc.mos