CascadeHeatHighToLow.h

Go to the documentation of this file.

#pragma once
 
#include "losses/gas_flue_gas_material.h"
#include "losses/solid_liquid_flue_gas_material.h"
 
class CascadeHeatHighToLow {
  public:
    struct Output {
        Output(double priFlueVolume, double hxEnergyRate, double eqEnergySupply, double effOpHours,
               double energySavings, double costSavings, double hourlySavings, double priExcessAir,
               double priAvailableHeat, double secExcessAir, double secAvailableHeat)
            : priFlueVolume(priFlueVolume), hxEnergyRate(hxEnergyRate), eqEnergySupply(eqEnergySupply),
              effOpHours(effOpHours), energySavings(energySavings), costSavings(costSavings),
              hourlySavings(hourlySavings), priExcessAir(priExcessAir), priAvailableHeat(priAvailableHeat),
              secExcessAir(secExcessAir), secAvailableHeat(secAvailableHeat) {}
 
        Output()             = default;
        double priFlueVolume = 0, hxEnergyRate = 0, eqEnergySupply = 0, effOpHours = 0, energySavings = 0,
               costSavings = 0, hourlySavings = 0, priExcessAir = 0, priAvailableHeat = 0, secExcessAir = 0,
               secAvailableHeat = 0;
    };
 
    CascadeHeatHighToLow(GasCompositions gasCompositions, double fuelHV, double fuelCost, double priFiringRate,
                         double priExhaustTemperature, double priExhaustO2, double priCombAirTemperature,
                         double priOpHours, double secFiringRate, double secExhaustTemperature, double secExhaustO2,
                         double secCombAirTemperature, double secOpHours, const double fuelTempF = 60,
                         const double ambientAirTempF = 60, const double combAirMoisturePerc = 0)
        : fuelHV(fuelHV), fuelCost(fuelCost), priFiringRate(priFiringRate),
          priExhaustTemperature(priExhaustTemperature), priExhaustO2(priExhaustO2),
          priCombAirTemperature(priCombAirTemperature), priOpHours(priOpHours), secFiringRate(secFiringRate),
          secExhaustTemperature(secExhaustTemperature), secExhaustO2(secExhaustO2),
          secCombAirTemperature(secCombAirTemperature), secOpHours(secOpHours) {
        const auto res =
            gasCompositions.getProcessHeatProperties(priExhaustTemperature, priExhaustO2, priCombAirTemperature,
                                                     fuelTempF, ambientAirTempF, combAirMoisturePerc);
        stoichAirVolume  = res.stoichAir;
        priExcessAir     = res.excessAir;
        priAvailableHeat = res.availableHeat;
        priFlueSpecHeat  = res.specificHeat;
        priFlueDensity   = res.density / 16.018463;
 
        const auto resSec =
            gasCompositions.getProcessHeatProperties(secExhaustTemperature, secExhaustO2, secCombAirTemperature,
                                                     fuelTempF, ambientAirTempF, combAirMoisturePerc);
        secExcessAir     = resSec.excessAir;
        secAvailableHeat = resSec.availableHeat;
    }
 
    CascadeHeatHighToLow::Output calculate();
 
  private:
    double stoichAirVolume = 0, priExcessAir = 0, secExcessAir = 0, priAvailableHeat = 0, secAvailableHeat = 0,
           priFlueSpecHeat = 0, priFlueDensity = 0;
    double fuelHV = 0, fuelCost = 0;
    double priFiringRate = 0, priExhaustTemperature = 0, priExhaustO2 = 0, priCombAirTemperature = 0, priOpHours = 0;
    double secFiringRate = 0, secExhaustTemperature = 0, secExhaustO2 = 0, secCombAirTemperature = 0, secOpHours = 0;
};