Nc 30 blower fans

Dave,

I do believe the fan will get more heat off the stove but seems to over heat the room the stove is in.

I just think the outer rooms of the house get warmer with using a stove as a radiant heater only and not using a blower.

The interesting part and yes I can not prove it is weather you get more heat using the blower or more heat not using the blower.

As I think about it using a blower means less efficient burn. Secondary combustion is not just on or off type thing. Secondary combustion
has many levels depending the conditions. What I am trying to say is you can barely have secondary combustion with a few secondary flames up in the top of the stove
then you can have a higher amount of secondary combustion burning even more of the smoke gasses. I think the newer stove designs like I explained above shows this as
the stove companies get better test results with the better insulated fire box.

So the question is you have two situations and I dont know really which one is the right one.

You have one situation that your getting more heat off the stove using the blower getting more heat into the room the stove is in.

Then the second situation is your not using a blower to more rapidly get heat off the stove but your getting more heat out of your wood as the higher firebox temps are burning more of the smoke gases getting you more BTU's. Now question is how much heat are you geting off this stove that is hotter now that your getting more energy from the cleaner burn. I really dont know.

Now here is even a trickier thought:
I would say with a cleaner burn and a hotter stove the difference in heat from the room temp to the stove , which is a difference of potential, will give you additional heat transfer. As it is the difference of potential that makes the heat radiate and transfer.

But having said all that stuff. My main point was that the natural convective flows are not disturbed in a house when you turn off the blower on your stove which allows the outer ends of the house to heat better. But you have to be burning 24/7 If your letting your stove burn out and the house cool down then trying to fire back up and reheat the house thats a loosing battle ad the mass of the house is a storage device and will be against you especially during really cold weather.

I too will try my blower this winter in really cold weather and see how it does but I have tried it before. But I want to try it again.

 

Good point if the stove is a little over sized its not a big deal. I have a bigger stove now not a big deal for me anymore. I used to only have a 2.12 cuft stove.

 

The main reason I don't use the blower much is I get much better even heat throughout the house , if my house were more open ,(it is far from it) or I had stove in basement I would use a blower more, so anyway what I do works best for my house

 

On the first point in this house, it's actually the opposite. The blower moves the heat out of that room.
Second is also opposite in this house. When using the blower, the other end of the house is a couple degrees warmer. When I made the convection deck, it warmed it a couple more degrees.
Maybe I just have a weird house......scratch that, I KNOW I have a weird house.
The stove room is what might be considered the "toe" part of an L, so the heat has to make a left hand turn to get to the other end of the house.

 

Just observation too, but the stt runs only a little cooler with the blower on low.
I have nice 2ndaries right now, with a stt of about 500. Probably won't last as long as it would if I turned it off, but so far I'm likin' the deck/blower combo.

 

I didn't know you did that , musta missed it , is there a thread ?

 

Crude prototype.

My prototype convection deck | Firewood Hoarders Club

 

I don't buy it. A blower, unless super oversized, will not be able to steal enough heat from the firebox to quench secondary combustion. Especially if you are able to bump up the intake air to compensate for the higher desired output. The biggest stove blower you'll find is like 150 CFM and only blows across one side of the stove. Moving air over the stove will always make more heat than purely radiation. Radiation is occurring all the time at a fixed rate based on surface temp, even if the blower is running.

Wood furnace makers have this figured out. They cycle the blowers (1000+ cfm) based on duct temp to make sure that the firebox isn't cooled too much. The other trick that they use is to steal heat mostly from the flue instead of stealing it from the firebox. The flue gasses leave the stove hot and are cooled to the lowest safe temperature by the huge amount of flue heat exchanger area and blower.

I added a convection deck and a larger blower to my stove. Huge output difference because I can run a higher burn rate without overtemping the firebox. Once I shut the blower off, temps will climb higher than I would like.

 

Your right a blower will not kill your secondaries. Hope what I was explaining didnt make anyone believe that.