|Low Cost Charcoal Gasifiers for Rural Energy Supply (GTZ, 1994, 49 p.)|
|10. Concepts of future dissemination of small gasifier-engine systems|
Fuel for gasifiers and fuel for domestic cooking will always compete to a certain extent. The search for alternative cooking fuels will play an important part in the future, and a basically available technology is the production of briquetted fuel from residues/ wastes in agriculture and forestry. An alternative to traditional charcoal production could be the production of big-coke briquettes from especially common agricultural waste, using methods of an "intermediate technology". A classification of biomass or big-coke briquettes with respect to their suitability to domestic firing, but also to gas production by means of gasifiers is needed to form a basis for further decisions.
The problems are not so much in the technical as rather in the economical and political field. Fuel prices, for example the price of biocoal briquettes, have to be seen as political prices. If a relevant substitution of fossil fuels and fire wood by briquettes is acknowledged as an important goal, a subsidized price for briquettes may be worth thinking about.
A risk of the increased offer of commercial fuels, derived from a variety of biomass residues, is possibly a reduced availability of "free" fuel for the poorest of the poor.