modelController

Information

This example validates Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Towers.FanSpeed.Controller.

It shows the calculations of the fan speed setpoint for the three different plants, including the close coupled plants that have waterside economizer (cloCouWitWse), the less coupled plants that have waterside economizer (lesCouWitWse), and the close coupled plants that have no waterside economizer (cloCouNoWse).

• For the close and less coupled plants with waterside economizer,
  • if the plant is not enabled (before 600 seconds), the tower fan speed setpoint is 0.
  • if the economizer is enabled (600 seconds to 1320 seconds), the fan speed setpoint equals to the uTowSpeWSE.
  • in the period when the chiller runs only (after 1320 seconds), the speed setpoint is minimum of the plrTowMaxSpeSet, uMaxTowSpeSet and the mapped setpoint.
• For the close coupled plants without waterside economizer, the setpoint calculation is same as the one with economizer except there is no economizer enabled period. So when the chiller is enabled, the setpoint equals to the plrTowMaxSpeSet, uMaxTowSpeSet and the mapped setpoint.

Components

Revisions

• September 15, 2019, by Jianjun Hu:
  First implementation.