Wobbe index
Wobbe Index of common fuel gases
Columns: Fuel gas | Upper index Kcal/ Nm 3 | Lower index Kcal/ Nm 3 | Upper index MJ/ Nm 3 | Lower index MJ/ Nm 3
Hydrogen | 11528 | 9715 | 48.23 | 40.65 | Methane | 12735 | 11452 | 53.28 | 47.91 | Ethane | 16298 | 14931 | 68.19 | 62.47 | Ethylene | 15253 | 14344 | 63.82 | 60.01 | Natural gas | 12837 | 11597 | 53.71 | 48.52 | Propane | 19376 | 17817 | 81.07 | 74.54 | Propylene | 18413 | 17180 | 77.04 | 71.88 | n-butane | 22066 | 20336 | 92.32 | 85.08 | Iso-butane | 21980 | 20247 | 91.96 | 84.71 | Butylene-1 | 21142 | 19728 | 88.46 | 82.54 | LPG | 20755 | 19106 | 86.84 | 79.94 | Acetylene | 14655 | 14141 | 61.32 | 59.16