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My tank gasifier in operation

(Click to enlarge photo)

This is the finished tank gasifier I built in 2004. It has an 8 inch gasification tube in the centre and a 14 inch tank (old gas cylinder) of circulating water around the tube. The water moving through the tank keeps the gasification tube cool, thus preventing damage, and pre-heats the water before it then goes through the cast iron heat-exchanger above the actual flames. Primarily this gasifier was used for heating (around 8kW output) and I kept it for two years as part of a combined heating system for my house. Installed under a basic A-frame cover and with a layer of insulation around the tank (not shown) it worked very well indeed. The drawback is that it was difficult to automate the fuel supply and it required refilling every two and a half hours! Not very practical. Please see Safety and disclaimer about the dangers and legality of using gas cylinders.