Fuel Gases - Heating Values

Combustion and heating values of fuel gases - acetylene, blast furnace gas, ethane, biogas and more - Gross and Net values

Gross and Net heating values from combustion of common fuel gases are indicated in the table below:

GasGross Heating ValueNet Heating Value
(Btu/ft3)(Btu/lb)(Btu/ft3)(Btu/lb)
Acetylene (ethyne) - C2H2 1,498 21,569 1,447 20,837
Benzene 3,741 18,150 3,590 17,418
Blast Furnace gas 92 1,178 92 1,178
Blue water gas   6,550    
Butane - C4H10 3,225 21,640 2,977 19,976
Butylene (Butene) 3,077 20,780 2,876 19,420
Carbon to CO2 14,150 14,150
Carbon to CO 3,960 3,960
Carbon monoxide - CO 323 4,368 323 4,368
Carburetted Water Gas 550 11,440 508 10,566
Coal gas 149 16,500    
Coke Oven Gas 574 17,048 514 15,266
Digester Gas (Sewage or Biogas) 690 11,316 621 10,184
Ethane - C2H6 1,783 22,198 1,630 20,295
Ethyl alcohol saturated with water 1,548 12,804
Ethylene 1,631 21,884 1,530 20,525
Hexane 4,667 20,526 4,315 18,976
Hydrogen (H2) 325 61,084 275 51,628
Hydrogen Sulphide 672 7,479
Landfill Gas 476      
Methane - CH4 1,011 23,811 910 21,433
Methyl alcohol saturated with water 818 9,603
Naphthalene 5,859 17,298
Natural Gas (typical) 950
-
1,150
19,500
-
22,500
850
-
1,050
17,500
-
22,000
Octane saturated with water 6,239 20,542 3,170 10,444
Pentane 3,981 20,908 3,679 19,322
Producer gas   2,470    
Propane - C3H8 2,572 21,564 2,371 19,834
Propene (Propylene) - C3H6 2,332 20,990 2,181 19,630
Propylene 2,336 21,042 2,185 19,683
Sasol 500 14,550 443 13,016
Sulphur 3,940
Toluene 4,408 18,129 4,206 17,301
Water Gas (bituminous) 261 4,881 239 4,469
Xylene 5,155 18,410
  • 1 Btu/ft3 = 8.9 kcal/m3 = 3.73x104 J/m3
  • 1 Btu/lb = 2,326.1 J/kg = 0.55556 kcal/kg
Volumetric Heating Values are based on standard temperatures and pressure of dry gas - 60oF and 14.73 psi.

Related Topics

  • Combustion - Boiler house topics - fuels like oil, gas, coal, wood - chimneys, safety valves, tanks - combustion efficiency

Related Documents

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