Boiler Steam Generation Calculator
Boiler Steam Generation Calculator: Predict Steam Output From Fuel Input
Knowing how much steam a boiler can produce from a given fuel input rate is essential for sizing, load planning, and verifying that a boiler is performing to spec. This calculator converts fuel energy input, adjusted for boiler efficiency, into a steam mass flow rate using the enthalpy gain of the water-to-steam conversion.
The Formula
Steam Generation (kg/hr) = (Fuel Input(kW) × Efficiency% × 3600) / Enthalpy Gain(kJ/kg)
Worked Example
A boiler receives 1,000 kW of fuel input, operates at 85% efficiency, and the enthalpy gain from feedwater to steam is 2,200 kJ/kg.
Useful Heat = 1,000 × 0.85 × 3600 = 3,060,000 kJ/hr
Steam Generation = 3,060,000 / 2,200 = 1,390.91 kg/hr
How to Use This Calculator
- Enter the fuel input rate in kW.
- Enter the boiler's rated or measured efficiency as a percentage.
- Enter the enthalpy gain in kJ/kg for your steam pressure and feedwater temperature.
- Click Calculate to see the expected steam generation rate.
Related Calculations
Use alongside the Boiler Fuel Requirement Calculator to work the problem in reverse, or the Boiler Efficiency Calculator to verify your efficiency input.