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Calorific Value

One of the most important characteristics of a fuel is its calorific value, that is the amount of energy per kg it gives off when burnt.  The calorific value can thus be used to calculate the competitiveness of a processed fuel in a given market situation. There is a range of other factors, such as ease of handling, burning characteristics etc., which also influence the market value, but calorific value is probably the most important factor and should be recognized when selecting the raw material input.

Calorific Values of  briquettes from various raw materials for fuel

(1 KCal = 3.96 BTU)
Type Of Material
Ash (%)
Heat Of Combustion Kcal
Peat
29.0
3180
Charcoal
4.5
7213
Bagasse
1.80
4380
Coir Pitch
9.10
4146
Sugarcane
10.00
3996
Jute Waste
3.00
4428
Palm Husk
4.90
3900
Tea Waste
3.80
4237
Barks Wood
4.40
1270
Wood Chips
1.20
4785
Paddy Straw
15.50
3469
Wheat Straw
8.00
4100
Mustard Stalk
3.40
4200
Mustard Shell
3.70
4300
Bamboo Dust
8.00
4160
Forestry Waste
7.00
3000
Babool [Wood]
0.90
4707
Tobacco Waste
31.50
2910
Sunflower Stalk
4.30
4300
Soya Bean Husk
4.10
4170
Groundnut Shells
2.4
4626
Briquettes Of Bark
3.4
4487
Coffee Waste No.1
2.0
4371
Coffee Waste No. 2
5.0
4434
Coffee Waste No. 3
1.7
4438
Briquettes Of Chips
3.0
4800
Briquettes Of Paper
1.5
4841
Castor Seed Shells
8.00
3862
Saw Dust Briquettes
8.20
3898
Cotton Stalks / Chips
3.00
4252
Briquettes Of Papyrus
5.6
3965
Briquettes Of Sawdust
0.7
4654
Briquettes Of Rice Husk
15.0
3881
Briquettes Of Bark And Binder
4.8
4459
Briquettes Of Groundnut Shells
2.8
4661
Briquettes Of Straw And Coal Dust
6.1
4826
Briquettes Of Clean Chopped Straw
5.3
4403
Straw + Coal Dust + Rape Seed Waste
3.8
4100
Briquettes Of Shells From Palm Oil Kernels
2.0
4985

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