modelSpeed_primary_remoteDp
Validate sequence of controlling chilled water pump speed for primary-only plants with remote DP sensor hardwired to the plant controller
Information
This example validates Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Pumps.ChilledWater.Subsequences.Speed_primary_remoteDp.
It shows the process of specifying the chilled water pump speed for a primary-only plant, with two remote pressure sensors hardwired to the controller.
- Both of the pumps become enabled at 1 second. Thus, the pump speed setpoint becomes non-zero.
- After 1 second, the two remote pressure sensors have the measured values higher than the setpoint. The reverse acting PID controller thus gives the minimum output. Thus, the pump speed is minimum.
- When the measured values become lower than the setpoint, the reverse-acting PID controller increases the output, thus increasing the chilled water pump speed up to the maximum.
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Pumps.ChilledWater.Subsequences.Speed_primary_remoteDp | chiPumSpe | Chilled water pump speed control based remote pressure difference sensor | |
| Buildings.Controls.OBC.CDL.Logical.Sources.Pulse[2] | pumSta | Pump status | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Constant | difPreSet | Pressure difference setpoint | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Sin | remPreSen1 | Remote pressure difference sensor reading | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Sin | remPreSen2 | Remote pressure difference sensor reading | |
| Buildings.Controls.OBC.CDL.Routing.RealScalarReplicator | reaRep | Replicate real input |
Revisions
-
April 4, 2019, by Jianjun Hu:
First implementation.