Exhaust Gas Composition Calculator
Exhaust Gas Composition Calculator: Mass Breakdown of Combustion Products
Once you know the mass of each species produced by combustion, whether from a hand calculation or a heat and mass balance, this calculator converts those masses into a percentage composition, useful for emissions reporting, heat balance work, and comparing combustion products across different fuels.
The Formula
Species% = Species Mass / Total Exhaust Mass × 100
Worked Example
Exhaust gas contains 2.7 kg CO2, 2.25 kg H2O, 13.2 kg N2, and 0.5 kg O2 (per unit fuel burned).
Total = 18.65 kg, giving CO2 14.48%, H2O 12.06%, N2 70.78%, O2 2.68% by mass.
How to Use This Calculator
- Enter the mass of CO2 produced.
- Enter the mass of H2O produced.
- Enter the mass of N2 present.
- Optionally enter the mass of excess O2 present.
- Click Calculate to see the mass-percentage breakdown of each species.
Related Calculations
Use with the CO2 Emissions Calculator for a complete combustion products and emissions picture.