Typical heating values of combustible gases at 77°F (25°C)
Compound | Lower
heating value (H2O gas in products) |
Higher
heating value (H2O liquid in products) |
||
Btu/lbm fuel | kJ/kg fuel | Btu/lbm fuel | kJ/kg fuel | |
Acetylene, C2H2 | - | - | 21 500 | 50 000 |
Blast furnace gas | - | - | 1 170 | 2 720 |
Blue water gas | - | - | 6 550 | 15 200 |
n-Butane, C2H10 | - | - | 21 320 | 49 590 |
iso-Butane, C2H10 | - | - | 21 270 | 49 470 |
Carb. water gas | - | - | 11 350 | 26 400 |
Coal gas | - | - | 16 500 | 38 400 |
Coke-oven gas | - | - | 17 000 | 39 540 |
Ethane, C2H6 | 20 420 | 47 480 | 22 300 | 51 880 |
Hexane, C6H14 | 19 390 | 45 100 | 20 930 | 48 680 |
Hydrogen, H2 | 51 570 | 119 950 | 60 960 | 141 790 |
Methane, CH4 | 21 500 | 50 010 | 23 860 | 55 500 |
Natural gas) (15.8% C2H6) | - | - | 24 100 | 56 100 |
Octane, C8H18 | 19 260 | 44 790 | 20 750 | 48 250 |
Producer gas | - | - | 2 470 | 5 750 |
Propane, C3H8 | - | - | 21 670 | 50 400 |