# The Barrel in Barrel in Barrel gasifer

**URL:** http://forum.driveonwood.com/t/the-barrel-in-barrel-in-barrel-gasifer/5577
**Category:** General Discussion
**Created:** [January 14, 2021, 10:53pm UTC](http://forum.driveonwood.com/t/the-barrel-in-barrel-in-barrel-gasifer/5577 "2021-01-14T22:53:05Z")
**Posts on this page:** 1
**Showing post:** 105

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### Author: ![ForbiddenTuna](http://forum.driveonwood.com/user_avatar/forum.driveonwood.com/forbiddentuna/32/36469_2.png) [@ForbiddenTuna](http://forum.driveonwood.com/u/ForbiddenTuna)
#### Post date: [April 1, 2023, 3:22am UTC](http://forum.driveonwood.com/t/the-barrel-in-barrel-in-barrel-gasifer/5577/105 "2023-04-01T03:22:21Z")

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Kevin, Chris Saenz and Max Gasman and some others did that with the Plank Gasifier. Hot gas came up through the hopper in a pipe/tube and heated up the fuel from the center to drive moisture out and the monorator removed the moisture.

> [@Plank gasifier](https://forum.driveonwood.com/t/plank-gasifier/1276):
>
> The plank gasifier preheats the primary air around the herarth and the wood in the silo with the exiting gas. The steam from the wood can be condensated in the condensing mantel at the silo mantel. Drawn by TerryL.

Ben Peterson’s Builders Bible design has a mix between a monorator and a hot hopper. Exiting gas goes through a mantle in the hopper right before the nozzles, below the monorator.

I’ve been wanting to build a triple walled gasifier for a hot minute. But also having at least some monorator so I can use raw wood with less fuss. Downside to a totally hot hopper is apparently they can steam crash, moisture cooling the active zone too much. I’m willing to sacrifice some fuel capacity if it means I can run really raw wood.

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