modelEnableChiller

Information

This example validates Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Staging.Processes.Subsequences.EnableChiller.

The example has two instances enaDisChi and enaOneChi, which show the sub-processes of enabling chillers when the plant is in staging up process. For the instance enaDisChi, the process requires chiller 3 being enabled and chiller 2 being disabled, while for the instance enaOneChi, the process just requires chiller 3 being enabled.

For the instance enaDisChi,

• Before 540 seconds, the plant is not in staging up process. The chiller 1 and 2 are operating.
• For the period from 540 seconds to 720 seconds, it is in process up process. However, it does not yet require enabling chiller (uEnaChiWatIsoVal=false).
• Since 720 seconds, the process requires new chiller to be enabled and the chiller 3 is enabled.
• After 5 minutes at 1020 seconds, the chiller 2 becomes disabled. The output yNewChiEna becomes true, indicating that the chiller enabling process is finished.

For the instance enaOneChi,

• Before 540 seconds, the plant is not in the staging up process. The chiller 1 and 2 are operating.
• For the period from 540 seconds to 720 seconds, it is in the process up process. However, it does not yet require enabling chiller (uEnaChiWatIsoVal=false).
• Since 720 seconds, the process requires new chiller to be enabled and the chiller 3 is enabled. The output yNewChiEna becomes true, indicating that the chiller enabling process is finished.

Components

Revisions

• September 24, 2019, by Jianjun Hu:
  First implementation.