Recycling Sawdust
- Thread starter HarveyWildes
- Start date
Peter_C said:
Imagine, the stack of wood isn't built smaller than the bag on purpose, or oh, I don't know maybe like the size of fire in a fireplace insert.
Imagine the bags are used to help start the fire or placed on a bed of coals.
I'm going to make you a video.
Size of wood pile is irrelevant. Once the bag burns off you are left with a smoldering pile of dust. See video below for one possibility of how the dust could become airborne, and once air borne explode. (You are probably going to say it never happens with your stove. It is a well known fact the Jotul stoves do puff, THUMP, whatever you want to call it. My Quadrafire 4100 will bang lightly when the fire re-lites itself, door closed, air vent open. Most likely the smoke exploding. Never does it blow back into the room though unless the door is open.)
Jotul back puff
Didn't bother searching for any other videos as this one shows it clearly. Notice the dust in the air?
Wood stove thump
This will be my last post trying to show different ways things can go wrong with possibly severe consequences. As wood to me is free and in abundance I see zero reason to try to burn saw dust inside. Actually I quit heating with wood a couple years before the Tubbs Fire and had gotten rid of 6 cords of oak, possibly saving our house as the wood piles would have caught fire for sure. Gave it all away, and we give away a few cords of un-split wood every year, of oak, pine, cedar, fir, and acacia. Never do I want to keep wood onsite due to extreme fire dangers, but also not smoking other folks out downwind of me (Quadrafire produces no noticeable smoke when burning correctly, but the smell and particulates are still present).
A 2 stage natural gas heater is quiet, no loud fans running, 96% efficient, rarely runs as the house stays mostly constant, doesn't overheat the house to 86*, no spiders are brought into the house with wood, no bins full of wood inside the house, less cleanup of inside the house, no going outside in the rain, no rats in the non existent wood pile, although the wood is still cut most every year, not splitting it saves on brutal work with a 30 ton vertical splitter, no drastic moisture changes to the hardwood floor and wooden furniture, along with a host of other reasons. When doing the roof next summer, I plan to take the chimney out, to gain more room in the garage for woodworking tools. 8)
If my saw dust didn't have plastic in it, I would just spread it around outside, in flower beds, the garden, or put it in the green garbage can. *shrugs*
Jotul back puff
Didn't bother searching for any other videos as this one shows it clearly. Notice the dust in the air?
Wood stove thump
This will be my last post trying to show different ways things can go wrong with possibly severe consequences. As wood to me is free and in abundance I see zero reason to try to burn saw dust inside. Actually I quit heating with wood a couple years before the Tubbs Fire and had gotten rid of 6 cords of oak, possibly saving our house as the wood piles would have caught fire for sure. Gave it all away, and we give away a few cords of un-split wood every year, of oak, pine, cedar, fir, and acacia. Never do I want to keep wood onsite due to extreme fire dangers, but also not smoking other folks out downwind of me (Quadrafire produces no noticeable smoke when burning correctly, but the smell and particulates are still present).
A 2 stage natural gas heater is quiet, no loud fans running, 96% efficient, rarely runs as the house stays mostly constant, doesn't overheat the house to 86*, no spiders are brought into the house with wood, no bins full of wood inside the house, less cleanup of inside the house, no going outside in the rain, no rats in the non existent wood pile, although the wood is still cut most every year, not splitting it saves on brutal work with a 30 ton vertical splitter, no drastic moisture changes to the hardwood floor and wooden furniture, along with a host of other reasons. When doing the roof next summer, I plan to take the chimney out, to gain more room in the garage for woodworking tools. 8)
If my saw dust didn't have plastic in it, I would just spread it around outside, in flower beds, the garden, or put it in the green garbage can. *shrugs*
My house has a fireplace. When I first moved in about 24 years ago I built fires in the winter. While it warmed the livingroom, it made the rest of the house colder.
As the ash and hot air went up the flue, it created a negative atmosphere in the house and sucked in cold air wherever it could. I could feel cold drafts around the doors.
While better door seals would have slowed the cold air intrusion, it would not have stopped it. Nature hates a vacuum. Eventually, the vacuum would have neutralized and the cold air would have migrated into the house.
I suppose an airtight stove insert would have remedied much of that air intrusion, but unless you have access to free wood, the savings are illusory.
As the ash and hot air went up the flue, it created a negative atmosphere in the house and sucked in cold air wherever it could. I could feel cold drafts around the doors.
While better door seals would have slowed the cold air intrusion, it would not have stopped it. Nature hates a vacuum. Eventually, the vacuum would have neutralized and the cold air would have migrated into the house.
I suppose an airtight stove insert would have remedied much of that air intrusion, but unless you have access to free wood, the savings are illusory.
Packard said:
Modern fireplaces definitely cost you heat, more for ambiance then heat.
My insert is sealed but may pull air from the floor to feed the fire. A fan at the bottom shoots air under then up the backside and over the top into the room. We have lots of saw dust, off cuts, and a service will drop wood in our driveway if they cutting trees nearby. They blast a text message like "maple rounds available tomorrow" and if you want them you text back. Sometimes they have logs as well. sometimes they are green just cut. Other times dead and ready to burn.
My fireplace was "high tech circa 1953". It has vents in the stone that allows the heat from the fireplace to recirculate.
Tulikivi stoves are made from massive blocks of soapstone. They build a really hot fire in the stove that burns for just a couple of hours. That heats up the soapstone which stores the heat and distributes it over the next 12 hours.
In the morning the contents of the stove will have cooled off and can easily be cleaned out.
Most homes cannot handle the weight of a classic Tulikivi stove. They do make lighter ones nowadays, but they really lose the classic functionality of the massive stoves.
Not only are they massively heavy, they are massively expensive too. They weigh upwards of 4,000 pounds and cost between $4,500.00 to $16,000.00. Plus installation and structural upgrades to handle the weight.
For new construction this is the bees knees for fire places.
https://www.mountainflame.com/tulikivi
Tulikivi stoves are made from massive blocks of soapstone. They build a really hot fire in the stove that burns for just a couple of hours. That heats up the soapstone which stores the heat and distributes it over the next 12 hours.
In the morning the contents of the stove will have cooled off and can easily be cleaned out.
Most homes cannot handle the weight of a classic Tulikivi stove. They do make lighter ones nowadays, but they really lose the classic functionality of the massive stoves.
Not only are they massively heavy, they are massively expensive too. They weigh upwards of 4,000 pounds and cost between $4,500.00 to $16,000.00. Plus installation and structural upgrades to handle the weight.
For new construction this is the bees knees for fire places.
https://www.mountainflame.com/tulikivi
Peter_C said:
Actually, that is not the stone surrounding the stove. That is the stove.
All that soap stone is what stores the heat and distributes it through the evening. It is why these stoves weigh 4,000 + pounds.
Apparently, in Finland homes are designed around these stoves. They are supposed to be incredibly efficient.
As a side note, when the price of home heating oil shot up from $0.89 per gallon to nearly $4.00 per gallon, the price of pellet fuel shot up at a similar rate. They kept the price just below what it would cost to use oil. Their profit margins had to be incredible.
To a lesser degree, the price of a cord of wood also paralleled that of heating oil. That is why I mentioned earlier that heating with wood only makes sense if you can harvest your own.
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