AirWaterCoolingUsingFlueResults airWaterCoolingUsingFlue(const gas_composition::GasComposition &gas_compositions, double heat_input, double temp_flue_gas_in, double temp_flue_gas_out, double temp_comb_air, double fuel_temp, double perc_o2, double ambient_air_temp=60, double moist_comb_air=0)
Calculates heat recovery using flue gas and condensing heat exchanger.