Combustion Calculator

Comprehensive combustion analysis including efficiency calculations, boiler performance, safety valve sizing, and tank design for various fuels and applications.

Fuel Properties

Select a predefined fuel or enter custom properties

Fuel Type

Carbon (%)

Hydrogen (%)

Sulfur (%)

Oxygen (%)

Higher Heating Value (BTU/lb)

Lower Heating Value (BTU/lb)

Excess Air (%)

Stack Temperature (°F)

Combustion Results

Air requirements and flue gas composition

Theoretical Air

17.17

lb air/lb fuel

Actual Air

20.60

lb air/lb fuel

Flue Gas Composition

CO₂:

8.1%

H₂O:

16.0%

N₂:

72.7%

O₂:

3.2%

Combustion Efficiency

0.0%

Based on stack loss method