water_heating_using_flue.h

#pragma once
#include "physics/gas_composition.h"
 
namespace water_heating_using_flue {
 
enum class SteamCondition { Superheated, Saturated };
 
struct WaterHeatingUsingFlueResults {
    double flue_gas_mass_flow = 0;        
    double boiler_available_heat = 0;     
    double steam_specific_enthalpy = 0;   
    double feedwater_specific_enthalpy = 0; 
    double steam_mass_flow = 0;           
    double feedwater_mass_flow = 0;       
    double flue_gas_specific_heat = 0;    
    double flue_gas_heat_capacity = 0;    
    double feedwater_specific_heat = 0;   
    double feedwater_heat_capacity = 0;   
    double min_heat_capacity = 0;         
    double recovered_heat = 0;            
    double flue_gas_exit_temp = 0;        
    double feedwater_exit_temp = 0;       
    double annual_energy_savings = 0;     
    double annual_cost_savings = 0;       
};
 
WaterHeatingUsingFlueResults waterHeatingUsingFlue(
    const gas_composition::GasComposition& gas_compositions,
    double temp_flue_gas_f,
    double perc_o2,
    double temp_comb_air_f,
    double moist_comb_air,
    double rating_boiler,
    double pr_steam,
    double temp_ambient_air_f,
    double temp_steam_f,
    double temp_fw,
    double perc_blow_down,
    double eff_hx,
    double op_hours,
    double cost_fuel,
    double hhv_fuel,
    SteamCondition cond_steam = SteamCondition::Superheated,
    double fuel_temp_f = 60
);
 
} // namespace water_heating_using_flue