modelOptimalStartHeatingCooling

Validation model for the block OptimalStart for both heating and cooling system
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Information

This models validates both space heating and cooling for the block Buildings.Controls.OBC.Utilities.OptimalStart.

The first ten days is to test the heating case with a lower outdoor temperature. The next ten days has a higher outdoor temprature, which is to test the cooling case. The zone model has a time constant of 27.8 hours. The optimal start block converges separately to an optimal start time for heating and cooling. Note that during the three transition days, the zone temperature is in the deadband, so there is no need to optimally start the heating or cooling system in advance.

Components

TypeNameDefaultDescription
Buildings.Controls.OBC.Utilities.OptimalStartoptStaOptimal start for both heating and cooling system
Modelica.Blocks.Continuous.IntegratorTRooRoom air temperature
Buildings.Controls.OBC.CDL.Reals.Sources.ConstantTSetCooOccZone cooling setpoint during occupancy
Buildings.Controls.OBC.CDL.Reals.Sources.SinTOutBaseOutdoor dry bulb temperature, base component
Buildings.Controls.OBC.CDL.Reals.MultiplyByParameterUAOverall heat loss coefficient
Buildings.Controls.OBC.CDL.Reals.SubtractdTTemperature difference between zone and outdoor
Buildings.Controls.OBC.CDL.Reals.MultiplyByParameterQCooHeat extraction in the zone
Buildings.Controls.OBC.CDL.Conversions.BooleanToRealbooToRea1Convert Boolean to Real signal
Buildings.Controls.OBC.CDL.Reals.Addadd1Reset temperature from unoccupied to occupied for optimal start period
Buildings.Controls.OBC.CDL.Reals.PIDconPID1PI control for space cooling
Buildings.Controls.SetPoints.OccupancyScheduleoccSchDaily schedule
Buildings.Controls.OBC.CDL.Reals.MultiSummulSumSum heat gains
Buildings.Controls.OBC.CDL.Reals.Sources.ConstantTSetHeaOccZone heating setpoint during occupancy
Buildings.Controls.OBC.CDL.Conversions.BooleanToRealbooToRea2Convert Boolean to Real signal
Buildings.Controls.OBC.CDL.Reals.Addadd2Reset temperature from unoccupied to occupied for optimal start period
Buildings.Controls.OBC.CDL.Reals.PIDconPIDPI control for space heating
Buildings.Controls.OBC.CDL.Reals.MultiplyByParameterQHeaHeat injection in the zone
Buildings.Controls.OBC.CDL.Reals.AddTOutOutdoor dry bulb temperature
Buildings.Controls.OBC.CDL.Reals.Sources.PulsepulRange of outdoor dry bulb temperature
Buildings.Controls.OBC.CDL.Conversions.BooleanToRealTSetHeaRoom temperature set point for heating
Buildings.Controls.OBC.CDL.Conversions.BooleanToRealTSetCooRoom temperature set point for cooling

Revisions

  • March 19, 2020, by Michael Wetter:
    Simplified setpoint implementation.'
  • December 15, 2019, by Kun Zhang:
    First implementation.