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Old 12-14-2016, 11:54 AM   #1 (permalink)
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Wood gas?

Has anyone built a wood gas system?

I've been toying with powering a small tractor with a FEMA-type wood gasifier (with a cyclone and a filter system for the tar)

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Old 12-14-2016, 12:14 PM   #2 (permalink)
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What did you want to power with it?
Something like a wood stove or boiler or something like a piston engine?
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Old 12-14-2016, 12:58 PM   #3 (permalink)
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a small piston engine.
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Old 12-14-2016, 01:10 PM   #4 (permalink)
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That the same idea as the coal-gas engine conversions the brits did back in the war or whenever it was?
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Old 12-14-2016, 01:13 PM   #5 (permalink)
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not only brits, a lot of countries had wood gas at the time of the war.
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Old 12-14-2016, 01:55 PM   #6 (permalink)
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the engine would be a 10-something hp engine.
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Old 12-14-2016, 02:05 PM   #7 (permalink)
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One thing I do remember is people saying that wood gas roughly cuts the engines power output in half.
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Old 12-14-2016, 02:16 PM   #8 (permalink)
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exactly. That's why I need a 10-something hp engine.

The gearing will be super-low though, as the top speed only needs to be about 9Mph. It will pull a small trailer
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Old 12-14-2016, 03:05 PM   #9 (permalink)
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but I can't make my mind if should build a updraft or a downdraft (or a sidedraft) gasifier. The fuel is going to be very inconsistent in quality and size.

The gasifier system also needs to be small in size.
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Old 12-16-2016, 02:59 PM   #10 (permalink)
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Quote:
The gasifier system also needs to be small in size.
Well, there's a problem. https://www.google.com/search?q=wood+gas+ca Looking at the Images of presumably successful installations, compactness is not apparent. Most successful seems to be VW, with a 'power bulge' on the hood and the filters underneath the floor.

And if the fuel is 'inconsistent in quality and size' you could add a chipper/shredder render it consistent.

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