Stove cooling times.

[Sully]

Hey guys. How's it going. I have an insert. It is in and outdoor brick chimney. I have roxul stuffed in flue and around liner at bottom to use a block off until I can make a nice sheet metal one this summer. My question is what are the factors that cool a stove down. Sometimes I feel like it holds temp for decent times and others I'm surprised how fast it drops. I'm pretty sure it has to do with wood and how many btu are left in the fuel after it hits top temp. Any other factors and fixes I could do. Would roxul around unit be good idea. I only have enough room in back that roxul would be touching insert. Is that ok?

 

[Wormyone]

I'm not so sure that wrapping the unit would be a good idea.....you are taking the right steps in using the block off plate and are on the right track about different wood....can you tell us more about your set up? Also when do you notice that it holds temps better?

 

[Sully]

I don't actual mean wrap it, there's just enough room behind unit that I could fit roxul down in to.
I have osburn 2400. 28 feet of liner blocked off up top roxul stuffed at bottom. I will have to keep a better eye on exactly when the drops are and what I did different. I will see if I can check it a little better this Saturday

 

[Wormyone]

While. I am still new to this, short of controlling the damper better and having the insulation in place of the block off plate I'm not sure what could cause this. Has the wood been the same both times when the temp is ok and when it drops?

 

[Sully]

This year it's the mixed hard wood so it's always a mix of crap. Lol. I should honestly hold all questions off until next year when I will be burning hardwoods I seasoned myself.lol. I'm just curious in how fast other peoples stoves drop. It holds at high temp 750/800 for about an hour or so than drops. It will drop to 550 within an hour but hold there for awhile. It's probably normal for sub par wood loads

 

[Bagelboy]

Sounds pretty normal Sully. I would bet if you were burning harder wood, such as oak, it would hold temperature longer since the wood is more dense. Don't forget, at 750 and going down to 500, you're still pumping out some serious heat with crap wood. I, like you, have mostly mixed wood. I don't have access to oak, but I bet that it would hold temps a lot longer because of its density. This is why it is the firewood of serious burners!

 

[danham]

The temps sound normal to me too. But I can verify that putting some Roxul behind the stove to prevent heating my driveway (via an outside chimney) made a significant difference. It's not a problem that the Roxul touches the back of the insert.

-dan

 

[etiger2007]

Bert AKA Fyrebug who used to work for SBI urged me to insulate around my insert (with Roxul) and yes its a tight fit so its touching the insert on all three sides of the stove. What did this do for me and my set up? The stove stays warmer longer (never overfires because of this) and the coals stay around longer. On a normal load of wood once its at 600-650 it stays there for around two hours then my stove likes to cruise at 400 for another hour or hour and a half. then I reload after four/five hours and the stove is around 350. Some will say not to insulate because you want the radiant heat, the part we insulate will just keep the stove warmer and thats what you want because the fan can pull more heat off the stove, you still get radiant heat from the 30% sticking out in the room. I never have any odors from the Roxul when burning.