This is the prototype of Magh series "Magh Utham Woodgas Burner". http://e-maghutham.blogspot.com/ This is a natural draft burner (forced air is optional). Low cost, low weight, easy of operation, easy to collect the biochar by rotating the combustion frame and easy to reload it. As it is can be used for boilers / institutional stoves / domestic cooking / etc. The performance is good. There could be some more improvements in its design to increase its performance. For details and photographs see the link http://e-maghutham.blogspot.com/ . The term "Utham" refers to "Best" which is part of the name of Prof. K. Purushotham Reddy a very well known environmentalist in India.
Magh CM-II natural draft woodgas stove http://e-maghcm-ii.blogspot.com/, it is a very low-cost stove for heating and generating charcoal. It can also be described as a mini-charcoal making metal kiln. Instead of incinerating biomass generated from home gardens / any other dry combustible material generated as household waste usually throw into the garbage bins, can be used here. The leaf litter, dry twigs / sticks, chips of wood, wood shavings, etc., are very much suitable.
AVAN STOVE - WOODGAS AND ROCKET STOVE PRINCIPLES
N. Sai Bhaskar Reddy,GEO GEOECOLOGY ENERGY ORGANISATION, December 30, 2007 Avan (Earth) Stove
Avan (Earth) Stove http://e-avanstove.blogspot.com/ has the features of both Rocket stove and Woodgas stove. It is made up of 25 nos of ordinary bricks, four bricks with slits, one piece of flat tile, one steel grate 7x7 inches and Clay mixed with cow dung. The approximate cost of construction is $ 2 (USD). All types of biomass can be used as fuel (Sticks / twigs / chips of wood / dry leaves / grass / saw dust / cow dung cakes / paddy husk etc.) and advantage of gravity is used for easy and semi-automatic feeding. Designed by Dr. N. Sai Bhaskar Reddy, GEO -Geoecology Energy Organisation http://www.e-geo.org declared as Creative Commons.