TCaldwell said:nofo, maybee something like this would be a little more potent than the turbulators in the eko, www.hpac.com. compact efficient heat transfer.
I'm getting turbulators made, and trying to get a quote from Zenon as well.
This design is great - I considered inserts that would have a similar effect, and be thermally coupled to the tubing walls. I think cleaning the fly ash would be a challenge.
Here's a photo - the page seems to change and didn't have the article when I looked at it.
![48% gasifier efficiency - Ooops, 56% 48% gasifier efficiency - Ooops, 56%](/talk/proxy.php?image=http%3A%2F%2Fwww.hpac.com%2FContent%2FSite019%2FArticles%2F07_01_2007%2F68885Compact010_00000044797.jpg&hash=4dee29d43e6cd9483cac75881c3cb5ce)