.Buildings.Fluid.HeatExchangers.ThermalWheels.BaseClasses.SpeedCorrectionSensible

Information

This model calculates the power consumption and the sensible heat exchanger effectiveness correction of a sensible heat wheel when it is in the different rotational speed.

• The power consumption of this wheel is calculated as

  P = P_nominal * uSpe / eta,

  where P_nominal is the nominal wheel power consumption, uSpe is the wheel speed ratio, and eta is the motor percent full-load efficiency, which is calculated as

  eta = eff(uSpe=x) / eff(uSpe=1),

  where eff(uSpe=x) is the motor efficiency when the speed ratio is x. The efficiency eta is obtained based on a cubic hermite spline interpolation of the motor percent full-load efficiency dataset (see Buildings.Fluid.HeatExchangers.ThermalWheels.Data.Characteristics.MotorEfficiency). Please note that uSpe/eta must be less or equal to 1.

• The sensible heat exchanger effectiveness correction is calculated based on a cubic hermite spline interpolation of the sensible heat exchanger effectiveness dataset (see Buildings.Fluid.HeatExchangers.ThermalWheels.Data.Characteristics.HeatExchangerEffectiveness).

Revisions

• July 9, 2025, by Michael Wetter:
  Refactored implementation to avoid repetitive calculation of derivatives for spline interpolation.
• May 28, 2024, by Sen Huang:
  First implementation.