Tuesday, March 21, 2006

The Principle and Design of Wood-Gas stove Posted by Picasa

The stove burning with orange and blue colored flames Posted by Picasa

Only 5ml of kerosene is used to start the fire Posted by Picasa

The stove loaded and ready for ignition Posted by Picasa

The sticks should be about one inch in length Posted by Picasa

Only small dry twigs are used as fuel  Posted by Picasa

Low-cost Wood-gas stove Posted by Picasa

Low-cost Wood-gas (Gasifier) stove - BEST STOVE

Low-cost portable Wood-gas (Gasifier) stove - BEST STOVE

A low-cost portable Wood-gas stove has been developed based on the Garlington’s portable gasifier model. It is top-lit and the draft is upwards. A small tin can of 3.5 inches diameter and 5 inches height is used for making the Wood-gas stove. For grate an aluminum wire is used at the bottom (even iron wire or nails can be used). Primary and secondary air slits are punctured into the tin to make the stove. A tin sheet or bricks or mud and stones can be used for the skirt and fire place.

For fuel one inch length small pencil size sticks (pruned twigs) or shavings and chips of wood from a carpenter’s workshop can be used. This stove burns for about 8 minutes with the wood-gas generated and later on the resultant charcoal burns for next 5 to 8 minutes giving sufficient heat for boiling one liter of milk or one person can take bath with the boiled water.

Price : Rupees. 2/- (Rupees two only)
Time for making it : 20 to 30 minutes
Efficiency : Highly efficient as compared to rocket stove.

After the success of this model, I have designed a clay version of the same. These are made up of clay+ sand (quartz / silica) + cowdung + ash, each one costing only Rs. 10/- or 0.25 USD.

This stove has the following advantages:
Requires only small wood pieces – saves trees
Batch feeding – lit and forget
Low cost any one can make it and use
Light weight - highly portable

Note: Preferably should be used in good ventilation conditions.