Garrett Cook

Thanks for the replies!

The big log idea seems to not really be working (not as I had hoped), so before I keep trying to make it work thought I'd run another idea past you guys.
I'm now thinking about using 4" x 4" x 2' logs going in from the top and going vertical( as high as I fell like making a loader). There will be 6 logs (in a 3 by 2 grid) ends (about 6") in the stove at one time. There won't be much of a air gap between the logs to start with but as they burn I would imagine the air gap could get quite large, guessing up to 3-4". Any one have any thoughts on the idea or if the air gap could be a problem??

I can do 3" x 3" if you guys think that would be much better as I have to build a log splitter wedge for it anyways, but the 4x4 would be easier to make and I could buy some 4x4 to test with.

I'll add a bit more info... my math is saying I need to burn 3.5 4x4x6" logs every hour for about 60,000btu( what I should need to heat the greenhouse).

Thank so much!

Thanks for the fast reply!

Apologies, I wasn't very clear on the whole idea.

The greenhouse will be 55' by 18' I live In middle TN. So it can get cold now and then. I need to keep it 60+ It will be used in a 7,000gal aquaponics system.
Yes it is a 12" diameter log. The length would be about 4' but then cut into 2 2' pieces (In hopes of creating a better burn with more surface area close to each other) the hopper will be perpendicular to the burn tunnel, the logs should fall/roll in and next to each other. I've tested 4 logs, 2 logs burning next to each other and 2 on top waiting. It worked pretty well, the last little bit didn't burn off all the way.

As for size I really have no idea how big it needs to be or can be?

By long I mean I can check it once a day and add logs but I don't have time to start it and tend to it all day or night. I can set up a system to pump the excess heat underground a couple feet down to use later. But the 7,000gal fish tanks should be taking most of the heat from 4 logs burning(just my thought).
I most likely Don't fully grasp the mass heating part.

Thank you.

So I'm new to this whole rocket stove stuff... I've only been looking at it for 3 days. Would this design work? if not where and I wrong in my thinking?

I'm tying to make one for a large greenhouse. I want it to be able to burn long as I don't have the time to feed it every day. So I thought I'd make sure my thinking is right before I finish the designs.

Thanks guys.