Composition and Calorific Value of Fuels
Composition and Calorific Value of Fuels Table
| Fuel |
C |
H |
O+N |
S |
H₂O |
Ash |
Higher calorific value (kJ/kg) |
Higher calorific value (Btu/lb) |
| Anthracite |
83-87 |
3.5-4.0 |
3.0-4.7 |
0.9 |
1-3 |
4-6 |
32,500-34,000 |
14,000-14,500 |
| Semi-anthracite |
63-76 |
3.5-4.8 |
8-10 |
0.5-1.8 |
5-15 |
4-14 |
26,700-32,500 |
11,500-14,000 |
| Bituminous coal |
46-56 |
3.5-5.0 |
9-16 |
0.2-3.0 |
18-32 |
2-10 |
17,000-23,250 |
7,300-10,000 |
| Lignite |
37 |
7 |
13.5 |
0.5 |
37 |
5 |
16,300 |
7,000 |
| Peat |
38-49 |
3.0-4.5 |
19-28 |
0.2-1.0 |
16-29 |
1-9 |
13,800-20,500 |
5,500-8,800 |
| Coke |
80-90 |
0.5-1.5 |
1.5-5.0 |
0.5-1.5 |
1-5 |
5-12 |
28,000-31,000 |
12,000-13,500 |
| Charcoal |
84 |
1 |
– |
– |
12 |
3 |
29,600 |
12,800 |
| Wood (dry) |
35-45 |
3.0-5.0 |
34-42 |
– |
7-22 |
0.3-2.0 |
14,400-17,400 |
6,200-7,500 |
| - |
- |
- |
- |
– |
- |
- |
kj/m3 |
Btu/ft3 |
| Town gas |
26 |
56 |
18 |
– |
– |
– |
18,600 |
500 |
| Natural gas |
75 |
25 |
– |
– |
– |
– |
37,200 |
1,000 |
| Propane C₃H₈ |
82 |
18 |
– |
– |
– |
– |
93,900 |
2,520 |
| Butane C₄H₁₀ |
83 |
17 |
– |
– |
– |
– |
130,000 |
3,490 |
| - |
- |
- |
- |
– |
- |
- |
kj/L |
Btu/gal |
| Kerosene |
86.2 |
13.0 |
– |
0.8 |
– |
– |
35,000 |
154,000 |
| Gas oil |
86.2 |
13.0 |
– |
0.8 |
– |
– |
38,000 |
164,000 |
| Heavy fuel oil |
85.0 |
10.8 |
– |
3.8 |
– |
– |
41,200 |
177,000 |
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