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Parameters Units NH 3 CO H 2 CH 4 C 2 H 6 C 3 H 8 C 4 H 1O C 5 H 12 C 6 H 14<br />

100% 100% 100% 100% 100% 100% 100% 100% 100%<br />

Molecular Weigh<br />

Lower Heating Value<br />

Lower Heating Value<br />

lb<br />

mol 17.03 28.01 2 16.04 30.07 44.10 58.12 72.15 86.18<br />

Btu<br />

lb 7410 4343 51,579 21,504 20,416 19,929 19,665 19,501 19,394<br />

Btu<br />

scf 347 321 274 909 1620 2320 3018 3714 4413<br />

Adiabatic Temperature 1700 2232 2103 1924 1980 1994 2000 2006 2008<br />

Rise, ∆T ab °C<br />

stoich<br />

Stoich Air/Fuel Ratio<br />

lb<br />

lb 6.06 2.48 34.3 17.23 16.17 15.75 15.53 15.4 15.31<br />

Fuel Flow Mass Ratio<br />

Wobbe Index<br />

Fuel Flow Volume Ratio<br />

(Btu/lb)<br />

Btu/lb CH 4 2.9 4.95 0.42 1 1.05 1.08 1.09 1.1 1.11<br />

LHV<br />

M Gas<br />

M Air<br />

Btu<br />

scf 452 326 1039 1222 1590 1880 2130 2353 2558<br />

(Wobbe)<br />

Wobbe CH 4<br />

2.7 3.75 1.18 1 0.77 0.65 0.57 0.52 0.48<br />

Limit of Flammability % Vol. 15 12.5 4 5 3 2.1 1.8 1.4 1.2<br />

Lower, L 25<br />

Limit of Flammability % Vol. 28 74 76 15 12.4 9.5 8.4 7.8 7.4<br />

Higher, U 25<br />

Limit of Flammability 1.87 5.92 18.75 3 4.13 4.52 4.67 5.57 6.17<br />

Ratio- U 25 /L 25<br />

Table C-7-1. Properties of Pure Gases.<br />

364 Gas Turbine Handbook: Principles and Practices

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