Calculation for cooking medium stove uses 9 mj of energy hr manure of 3 animals is fuel for stove to run for 2 5 hrs 8x3 24kg dung 1 2 m3 1 2x19mj 22 8 mj 9 2 5 hours. Wood required to boil a litre of water. Produced from industrial waste is 13 7 gj tonne ranging 8 7 19 gj tonne.
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