.Buildings.Controls.OBC.ASHRAE.G36.FanCoilUnits.Subsequences.FanSpeed

Information

Block that outputs the fan enable signal and the fan speed signal based on the heating and cooling loop signals. The implemented sequence is based on ASHRAE Guideline 36, 2021, Part 5.22.4.

The fan enable signal y1Fan is set to false when the operating mode signal opeMod is unoccupied, and is set to true otherwise.

The fan speed signal yFan is varied from the minimum cooling mode fan speed cooSpe_min to the maximum cooling mode fan speed cooSpe_max, when the cooling loop signal uCoo varies from the minimum limit uCoo_min to the maximum limit uCoo_max. Similarly, yFan is varied from the minimum heating mode fan speed heaSpe_min to the maximum heating mode fan speed heaSpe_max, when the heating loop signal uHea varies from the minimum limit uHea_min to the maximum limit uHea_max. The setpoint in deadband mode is equal to the deadband fan speed deaSpe.

Revisions

• March 17, 2022, by Karthik Devaprasad:
  First implementation.