Rice husk briquettes | Firewoood | Charcoal | |
Price | 200 (Mbeya) - 300 (Moshi) Tsh/kg | 100 - 200 Tsh/kg | 500 - 800 Tsh/kg |
calorific value | 3 3500 kcal/kg | 2 4000 kcal/kg | 1 6800 kcal/kg |
Ignition | 3 (takes time) | 1 | 2 |
Power | 3 (not so strong) | 2 | 1 |
Smoke | 3 (at the beginning) | 2 | 1 |
Burning time | 1 (long) | 3 | 2 |
Handling | 1 (same size/ not dirty) | 3 (should be split) | 2 (dirty) |
Remaining ash | 3 (much)* can be used as fertilizer | 2 | 1 (few) |
Forest conservation | 1 | 2 | 3 (loss of calorific value by carbonization) |