modelChilledWaterPlantReset

Information

This example validates Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.SetPoints.ChilledWaterPlantReset.

The instance plaRes shows the process of calculating the plant reset. It also shows that when the plant is in the staging process, the reset value will be fixed at the value when the staging process just starts.

• At the initial 1800 seconds, the plant is in the staging process. Thus, the chilled water plant reset equals 0, which is the reset initial value.
• In the period between 1800 seconds and 3600 seconds, the plant is not in the staging process. Thus, the plant reset equals the trim-respond output.
• At 3600 seconds, the staging process starts again, and thus the plant reset holds its value at 3600 seconds.

The process of calculating the reset value follows the same steps. For the instance devRes, besides the same process as shown in the instance plaRes, the devRes also shows that the reset value will be zero when the device is disabled (uDevSta=false).

Components

Revisions

• March 14, 2018, by Jianjun Hu:
  First implementation.