ᐅ Wood-burning stove "Iron Dog I" .... does anyone know it?

What you are probably looking for is called a "Bullerjan." In my opinion, it looks cool and quickly blows a large amount of warm air into the room. I once experienced this at a customer's hunting cabin—I would have liked to have one too, but didn't get permission from the boss 😉.

I also like it, but it is WAY too big. (13 kW for one of the models we're considering) If it runs at a reasonable temperature, we'll have to open the windows 😉 The boss won’t agree to that.

manohara schrieb:

I couldn’t find the Kratki MBM 11 exactly, but they were all around 1500?

€1,270 including shipping 😉

manohara schrieb:

That more heat is stored in firebrick stoves probably means that more of it escapes up the chimney, since it’s open there.

No. They are just as open as any wood stove.

manohara schrieb:

Where does the heat go?
This is, for me, a question that can be discussed a lot without a verifiable answer.

There’s not much to debate. A pure cast iron stove = chimney and directly into the room.
A stove with thermal mass = chimney, room, and thermal mass (which releases heat again). Some custom stoves can also generate warm air – that’s what the ventilation openings in the cladding or warm air channels in the insert are for.

manohara schrieb:

And during that whole time, heat keeps escaping up the chimney.
The faster heat transfers into the room, the less can be lost through the chimney.

That’s not quite right. You actually operate the stove differently. Without thermal mass, a lot more heat escapes through the chimney.

manohara schrieb:

Cast iron, for example, transfers heat faster than firebrick.
Temperature changes are therefore released to the room more quickly by a cast iron stove,

Negligible in terms of how much heat a cast iron stove absorbs.

berny schrieb:

What you are probably looking for is called a "Bullerjan." Looks, in my opinion, cool, and pushes a huge amount of warm air into the room really fast.

A warm air stove! Has nothing to do with a cozy fire, but extremely effective.

manohara schrieb:

Where does the heat go?
This is, for me, a question that can be discussed extensively without a verifiable answer.

It is undoubted that a large part escapes through the chimney.
A material that absorbs heat quickly also releases it quickly.
Cast iron, for example, does this faster than fireclay.
Temperature differences are therefore transmitted more quickly into the room by a cast iron stove than by one made of fireclay.
The fireclay stove retains heat longer and distributes the release over an extended period.
And during this time, heat constantly escapes through the chimney.

I believe this is where your reasoning is mistaken. Fireclay stores heat and continues to release it into the room even long after the fire has gone out. At that point, no more heat escapes through the chimney; that only happens while the fire is burning. At least, that has been our experience—the bricks were still warm the next morning and thus still giving off heat. Moreover, stone is generally a better heat storage material than metal.

nordanney schrieb:

No. They are just as open as any wood stove.

Both are equally open, exactly. While one releases the heat "immediately" into the living space, the other retains the heat longer INSIDE the firebox.

Of course, during that time more heat escapes outside.

... but I guess we don’t need to argue about that 🙂
everyone gets the stove they deserve 😉

While looking for IronDog users, I registered on several forums where I hoped to find someone.
In one of these forums, a dealer recently posted the following:

(I hope I am not violating any rules by quoting and hereby thank the author, whose name I will not disclose)

an ERFA is a stove

1. Lining the combustion chamber with cast iron plates, fireclay bricks, or vermiculite panels does not affect the emission values of the ERFA. Any testing institute for heating appliances will confirm this to you.
2. The lining of the combustion chamber with these materials is not done to achieve heat storage. The lining only serves to protect the combustion chamber. If the ERFA is made of steel or cast iron, the combustion chamber must be protected against excessively high temperatures to prevent damage to the stove body.
Only masonry tile stoves use fireclay bricks for heat storage. These are very thick fireclay bricks, up to 15cm (6 inches) thick.
In a wood stove or fireplace insert, fireclay bricks of this thickness are not used; usually they are between 15-30mm (0.6-1.2 inches) thick.
3. Any ERFA manufacturer and testing institute will confirm this.
4. For centuries, ERFA manufacturers have used cast iron or fireclay bricks for this purpose. In the last 25 years, more and more vermiculite panels have been used. Vermiculite stores no heat at all.

Whether the author has solid expertise or not, I cannot judge, but that is my impression.
It is interesting to me.

Elsewhere, the same author stated that cast iron linings are no longer used because they last too long and replacement parts do not need to be purchased.