I appreciate that you keep coming back and respond, although lots of negative feedback. (Me included) Keep up the updates.
Secondly, I second Highbeam in the fact that no one should replicate this setup. Experimental or not.
Thirdly, I grew up on a double barrel stove setup in my dads garage that at the age of 13 he felt safe enough to let me use it when I wanted to. Looking back, scary.
Fourthly, no one should replicate this setup ever.
I checked up on the fire (2:30AM) after a restock at around 9PM, hot coals and easily restarted. Greenhouse was quite warm if a bit smokey, still got some sealing to do on the stove. CO meter wasn't going off but the stove pulls in fresh air from various areas. The other half of the greenhouse was dripping condensation due to the temp difference, it should clear up. (picture of hot coals before putting more wood in.) Seems it will do fine for six hours if its loaded up with wood. I need to fill up on gas and find me some more dead trees.
A benefit of the location on the hill side is that since its a decent hill of 30-40Ft, its a decent thermocline effect. I'm aware the term is used for water but its used a bit in an old mountain course I went though a few years back. Since its not at the very top of the hill, it benefits from the cold air sinking away and warmer air flowing up the hill. No frost up there while there's ice at the bottom, ideal place to make a camp.
I've only seen one demonstration setup on youtube for indoor use but it was on a massive hearth, everything protected from it, and the double barrel had the extra four miles put into it. For the price of all the extras it would make more sense to just get the biggest EPA heater you can find and put in a normal size everything else. Not an indoor heater. I'm surprised there aren't more "out door" heaters that skip ratings and all the EPA mandates, seems like a good back door route.
It appears that I never cemented in the top cast adapter piece, probably because I had intended to take it back off and grind out the rest of the barrel edges so the damper would stop getting stuck but I ended up putting that in the stove pipe. It leaks some smoke depending on how much the damper is closed. The last four inches of my door gasket didn't stick so I need to touch up that when its warmer in a few days.
As for negativity, it just the usual elitism found on some forums. The government confiscated anything I lack for tuning people out. The thread has pretty much run its course though, and I appreciate all the feedback and tips. I might move all my plants into this greenhouse since it can be kept warm. Interior was 65? 70? going by feel, outside is "37" according to a sensor a few miles fromhere, but ahem, there is frost and solid ice outside so I know thats a lie. Temps are also probably measured a few feet off the ground. I'm sure the heater output could be calculated by the temperature difference and area / cubic space but I'm too lazy for that. It heats, and hopfully I won't have to dust the pipes out too often.
Going back to bed now. <3