Coupled sulfur/nitrogen fired-heater utility balance

RefineryHydrotreatingSulfurNitrogenFiredHeaterUtilityBalance converts the external heating requirement from a qualified coupled thermal-duty receipt to fuel input, furnace loss, fuel mass, cost, and indirect-emissions rates. Every new assumption is caller-owned and returned in the immutable receipt.

The calculation uses furnace efficiency as delivered heat divided by fuel LHV input. Fuel LHV is in MJ/kg, price is in caller-owned currency units per kg, and the emissions factor is in kg CO2e/kg fuel. Its explicit closure is:

fuel chemical power * furnace efficiency = delivered external heating duty

RefineryHydrotreatingSulfurNitrogenFiredHeaterUtilityBalance heater =
    RefineryHydrotreatingSulfurNitrogenFiredHeaterUtilityBalance.calculate(
        thermalDuty, furnaceEfficiency, fuelLhvMjPerKg, fuelPricePerKg,
        fuelEmissionsKgCo2ePerKg);

double fuelKgPerHour = heater.getFuelMassFlowKgPerHour();
double fuelCostPerTonneFeed = heater.getFuelCostPerTonneFeed();
double emissionsPerTonneFeed =
    heater.getFuelEmissionsKgCo2EquivalentPerTonneFeed();

For the public 1000 kg/h DOE/OEDI Big Hill material case, the upstream caller scenario requires 0.871822041 MW external heating. Illustrative caller inputs of 85% efficiency, 50 MJ/kg fuel LHV, 0.40 currency units/kg fuel, and 3.0 kg CO2e/kg fuel give 1.025672990 MW fuel input, 73.848455268 kg/h fuel, 29.539382107 currency units/h, and 221.545365804 kg CO2e/h. These values qualify the arithmetic only. They are not defaults, measurements, recommendations, market prices, or fitted furnace correlations.

The material basis inherits the public DOE/OEDI Big Hill assay and the EIA, AIChE, and NIST evidence qualified by the upstream coupled receipts. The new scenario values are not sourced properties of that assay.

This receipt does not select a fuel, define a lifecycle boundary, calculate fuel composition or combustion stoichiometry, predict flue gas, account for excess air, estimate direct stack emissions, calculate radiation or convection losses, size a furnace, model heat transfer, predict coking, price cooling, or optimize heat integration. Those effects require independent engineering qualification.