Fuel Gases - Wobbe Index
Wobbe index for fuel gases like propane, butane, methane and more.
The Wobbe Index indicates the interchange ability of a fuel gas and is the best indicator of similarity between natural gas and a specific propane-air mixture.
| Fuel Gas | Upper Wobbe Index (kcal/Nm3) | Lower Wobbe Index (kcal/Nm3) |
|---|---|---|
| Hydrogen | 11,528 | 9,714 |
| Methane | 12,735 | 11,452 |
| Ethane | 16,298 | 14,931 |
| Ethylene | 15,253 | 14,344 |
| Natural Gas | 12,837 | 11,597 |
| Propane | 19,376 | 17,814 |
| Propylene | 18,413 | 17,180 |
| n-Butane | 22,066 | 20,336 |
| Iso-Butane | 21,980 | 20,247 |
| Butylene-1 | 21,142 | 19,728 |
| LPG | 20,755 | 19,106 |
| Acetylene | 14,655 | 14,141 |
| Carbon Monoxide | 3,060 | 3,060 |
Since the Wobbe index relates heating characteristics of blended fuel gases it can be used to obtain constant heat flows from gases of varying compositions.
Note! The Wobbe Index does not relate flame temperatures, heat transfer coefficients or temperature gradients.
Related Topics
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Combustion
Combustion processes and their efficiency. Boiler house and chimney topics. Properties of fuels like oil, gas, coal and wood and more. Safety valves and tanks.
Related Documents
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Fuel Gases - Combustion Values
Combustion values for fuel gases like natural gas, propane and butane - Btu per cubic feet. -
Gases - Gross and Net Heat Values
Gross heat and net heat values for gases like hydrogen, methane and more.
