Dear gasifier experts, The team in SNV Vietnam is adopting the continous gasifier model developed by Belonio. The manual has been obtained from the CRHET. Watch our first propotype: http://www.youtube.com/watch?v=xQGS-VQIj5M We were able to control the fire, load fuel without affecting the fire, and easily remove char at the bottom of the reactor.
We also adopted the computer fan-casing by a cheaper, more popular fan in Vietnam (often used for coal and fixed wood stove). Fan costed 2USD (while to replicate Belonio's fan-casing, we bought the adapter for 5USD and a computer fan for 1.5USD) However, this is just our first step and we still have so many problems to fully control the fire and ease the operation. 1) For instance, uncontrolled moment happened when combustion occurs rigt on top of the fuel hopper, a lot of smoke was produced and later the fire burnt the fan. https://www.dropbox.com/s/43fkjs0axuye4oj/uncontrollable_moment.jpg https://www.dropbox.com/s/rd1g1cg0a9ue8qt/fan_casing.jpg 2) Another problem is that a lot of tar is produced. It deposits on pot bottom, burner and other part of the stove. That would also harm the user. An idea is to create a layer of char in the burner pipe (to filter the tar). Not tried yet. 3) We observes 5-10% of the gas leaked out through the char removal door. We burnt them, but user may not know (or they simply just don't care) that it is toxic. 4) One more, it is very hard to control the final minutes of the gasificatoin process. It always cause inverted combustion to the fuel hopper. By this email, I would like to ask if someone (a part from Belonio) has done a similar work with continous gasifier like this to share more experience. We can thus reduce our time and effort in localizing this technology. Best regards, Do Duc Tuong, Renewable Energy Advisor SNV Vietnam
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