Ancestors

Written by 😀🚲 on 2025-01-24 at 07:16

What would it take to adapt a 90% efficient condensing methane furnace to run on woodgas? H2 and CO, maybe using residual heat and/or electric heaters to cook the gas out of the wood, deal with all of the tar and water vapor, and exhaust the primarily cold CO2 with a power-vented sealed loop to the outdoors. The tricky part seems to be getting the wood up to temperature and keeping everything clean enough that it doesn't gunk up & create a bomb. Besides the feed mech, cooling the charcoal...

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Toot

Written by 😀🚲 on 2025-01-24 at 07:20

If you only burn the woodgas, you get 5kBtu/lb, theoretical byproduct of CO2+H2O, and ultimately carbon negative because that was recently photosynthesized CO2 and you're going to bury the charcoal. Besides the fact that fossil fuel is cheaper if you don't pay for the death of humanity, and the nitrogen getting in the way of the reaction, startup/shutdown smoke, cleaning tar out of everything, high labor of material handling, what's the downside?

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Descendants

Written by 😀🚲 on 2025-01-24 at 07:21

If you're putting 0.4lb of carbon (C, not CO2) back in the ground. I'm not sure when we weigh the wood vs carbon, maybe it's 0.3

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