modelBypassValve
Validate the control of inline valve
Information
This example validates Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Economizers.Subsequences.BypassValve.
The validation shows that when the plant is enabled in waterside mode
(uPla=true and uWSE=true):
-
The condenser water isolation valve to the heat exchanger will be fully
open (
yConIsoVal=1). -
The economizer in-line chilled water return line valve will be enabled,
with the initial position as fully open (
yRetVal=1). -
The return line valve will be modulated to maintain the static pressure
difference (
dpChiWat) across the chilled water side of the heat exchanger at the design value (dpDes).
If the economizer is disabled (uWSE=false), the condenser water
isolation valve to the heat exchanger should be fully closed, and the return
line valve should be disabled in the fully open position.
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Economizers.Subsequences.BypassValve | wseVal | Chilled water return line in-line valve control | |
| Buildings.Controls.OBC.CDL.Logical.Sources.Pulse | ecoSta | Water side economizer enable/disable status | |
| Buildings.Controls.OBC.CDL.Reals.Sources.Pulse | dpWSE | Static pressure difference across chilled water side economizer | |
| Buildings.Controls.OBC.CDL.Logical.Not | not2 | Plant enable | |
| Buildings.Controls.OBC.CDL.Logical.Sources.Pulse | enaPla | Enabled plant |
Revisions
-
July 15, 2022, by Jianjun Hu:
First implementation.