modelEnable
Validation sequence for enabling and disabling chiller plant
Information
This example validates Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Enable. It shows different conditions to enable and disable the plant.
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For instance
disPlaReq, the inputchiPlaReqbecomes greater than the ignorable requestignReqat 32400 seconds and becomes less than the ignorable request at 33000 seconds. The plant is enabled at 32400 seconds, but becomes disabled at 33300 seconds. It allows the plant being enabled for 15 minutes and then becomes disabled. -
For instance
disPlaOutTem, the inputTOutbecomes greater than the lockout temperatureTChiLocOutat 4382 seconds. The plant becomes enabled. At 39877.7 seconds, the inputTOutbecomes lower than the lockout temperatureTChiLocOutby 0.556 °C. The plant becomes disabled. -
For instance
disPlaSch, the chiller enabling schedule specifies that the plant should be enabled at 600 seconds. However, the plant becomes enabled at 900 seconds as it allows the plant being disabled for 15 minutes. The plant becomes disabled at 68400 seconds, which is specified in the plant scheduling.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | aveTWetBul | 288.15 | Chilled water supply set temperature |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Enable | disPlaSch | Disable plant without waterside economizer, due to schedule | |
| Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Enable | disPlaReq | Disable plant without waterside economizer, due to lack of request | |
| Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.Enable | disPlaOutTem | Disable plant without waterside economizer, due to low outdoor temperature |
Revisions
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March 12, 2020, by Milica Grahovac:
Removed tests related to initial stage determination. This is for issue 1831. Updated tests to include schedule based reference results. -
March 20, 2019, by Jianjun Hu:
First implementation.