.Buildings.Obsolete.Controls.OBC.ASHRAE.G36_PR1.AHUs.MultiZone.VAV.SetPoints.SupplySignals

Information

Block that outputs the supply temperature control loop signal, and the coil valve postions for VAV system with multiple zones, implemented according to the ASHRAE Guideline G36, PART 5.N.2 (Supply air temperature control).

The supply air temperature control loop signal uTSup is computed using a PI controller that tracks the supply air temperature setpoint TSupSet. If the fan is off, then uTSup = 0.

Heating valve control signal (or modulating electric heating coil if applicable) yHea and cooling valve control signal yCoo are sequenced based on the supply air temperature control loop signal uTSup. From uTSup = uHeaMax to uTSup = -1, yHea increases linearly from 0 to 1. Similarly, uTSup = uCooMin to uTSup = +1, yCoo increases linearly from 0 to 1.

The output uTSup can be used in a controller for the economizer.

Revisions

• November 1, 2017, by Jianjun Hu:
  First implementation.