FanShaftPower.h

#pragma once
 
#include <cmath>
 
class FanShaftPower {
  public:
    FanShaftPower(const double motorShaftPower, const double efficiencyMotor, const double efficiencyVFD,
                  const double efficiencyBelt, const double sumSEF)
        : efficiencyMotor(efficiencyMotor / 100), efficiencyVFD(efficiencyVFD / 100),
          efficiencyBelt(efficiencyBelt / 100), sumSEF(sumSEF) {
        motorPowerOutput = motorShaftPower * this->efficiencyMotor * this->efficiencyVFD;
        fanPowerInput    = motorPowerOutput * this->efficiencyBelt;
    }
 
    static double calculateMotorShaftPower(const double voltage, const double amps, const double powerFactorAtLoad) {
        return voltage * amps * powerFactorAtLoad * std::sqrt(3);
    }
    double getFanPowerInput() const { return fanPowerInput; }
    double getSEF() const { return sumSEF; }
 
  private:
    const double efficiencyMotor, efficiencyVFD, efficiencyBelt;
    const double sumSEF;
 
    double motorPowerOutput, fanPowerInput;
};