THIS IS A BIG reason most OWB folks burn green wood.......As a matter of fact, I'm pretty sure that some sales people selling OWB's actually encourage burning green wood to an extent, to make a "long burn". Which is wrong and hurting EVERY ONE that burns wood.....
Yea I agree!! It happens all over the place where I live People burning green oak almost straight off the stump. To most everyone I know seasoned wood is if they can get it to burnand they ant going to change. That does suck. It would would be a good idea to put the man setting on the side of the road trying to catch me 5 miles over the speed limit going yo work at 5am in the morning to going around and checking these smokers moister level and shut them down until they have dry wood. Being sorry is what it is !! People to sorry to go through the steps it takes to burn a clean fire. LEAVE US CLEAN BURNERS ALONE
It would cut the amount of wood that gets burned every year in half if everybody had to burn wood at a certain moister reading.
Not to pile on the OWB guys, but.... They've started to regulate them more in my area. My town has a minimum stack height for them, and some other more populated towns around me have banned them - or at least, they won't issue any new permits. The "conventional wisdom" around here says that "you can burn anything in them", and I think they've actually encouraged some amount of laziness. Most guys I see running them, just have a pile of big rounds, or 1/2 a tree sitting nearby, that they just dropped there last week; and they "split as they go". I guess they think CSS stands for "cut, split, and smoke"! My BIL wants one, so he can finally "burn some of this pine". I'm working on him - it's a process...
Scotty, every one that I'm aware of who are selling the units state that fact right up front. "You can burn green wood in this thing." Some will even tell a buyer not to dry any wood. So what is a buyer to do? Most are new to this so they believe the seller. Besides, it is a good point for them not having to store a lot of wood and handle it more often. Need wood? Just go cut a tree and you are all set for a few days.
One thing I have noticed with people who have OWB's is they have wood piles that would last me 2 or 3 years. And their house isnt any larger than mine. I burned a Wood Furnace in the basement for 14 years , quit as it took to much wood to keep it going. 6 years later (4 years ago) I was back into wood burning as these new EPA stoves burn some much less wood it easy for me to keep up with the wood production.
Need an IQ test for potential first time wood stove buyer Did you burn dry wood in that furnace, I cant complain about how much wood I used with my old stove (dry wood) especially when you consider how many leaks I had.
The Pig would burn one of these loads per year. The Tasso about half of the load ! The Jetstream burns 8 t0 9 Toyota pickup loads per year supplying the same load .
Boilers smoke for a reason. A conventional wood furnace when it overshoots the targeted heat set by the house thermostat, will dump that excess heat into the house and the occupants will open doors and windows to get rid of that extra heat. The boiler has set limits usually 185/190F where it will have to cut off combustion air. Go past 212F and you are into the land of steam where a lot of nasty things can happen. When a boiler has satisfied its house load and has to shut down, there is no easy to get ride of the unwanted heat. A OWB such as a Portage & Main 250 gasification can put out 200,000 BTUs per hour. If the house draw is less than 50,000 that gives a 75% idle time. That idle time creates a creosote cycle so when the boiler again has to supply heat, there's a warm up time needed to get back to clean burning gasification . The P& M in the right situation is a good boiler . A smaller indoor gasification boiler in a out building with a 1,000 gallons of storage, gives the opportunity to batch burn and eliminates the smoke cycles.
Met a guy last winter that was burning an OWB, I asked him how long he seasoned the wood and he said he doesn't season it because it burns too fast, he likes it green and slow. I'm not familiar with the OWB's but can they be adjusted like a stove so they burn dry wood slower?
The firebox in most cases is surrounded by water, making for a very low combustion temperature, and add green wood you have lots of smoke. The pig in the picture above is much like today's OWB without the pretty little house around it. The drafts are on or off. Once the water is up to temperature, they have to shut down or they start producing steam.
We have friends that have a small OWB that heats their home and their neighbors home. In the cold months it works good, but not that well in the shoulder season. The PDF is from the Jetstream manual on heat temperature combustion and the need for heat storage. The manual is over 30 years old .