Heat Powered Fan: Get Expert Advice Here

[dawnbledsoe]

Hello I'm new to the PF? My main reason for posting was to understand how I may begin to create a heat powered fan for my wood stove? Would someone be willing to help please?

 

[Dr Lots-o'watts]

What and why do you want to vent exactly? Is it to be heated by the stove itself? Just want to make sure I get this.

 

[turbo]

If you intend to copy an Ecofan, don't bother. We have one that was given to us, and it is pretty useless for moving air. It's main value is as a visible indicator that the stove's surface temperature is falling. Other than that, it's a conversation piece at best.

 

[Mech_Engineer]

Are the "heat driven fans" in question driven by stirling engines?

 

[Dr Lots-o'watts]

If you intend to copy an Ecofan, don't bother. We have one that was given to us, and it is pretty useless for moving air. It's main value is as a visible indicator that the stove's surface temperature is falling. Other than that, it's a conversation piece at best.

I just checked these out, and they can apparently provide around 100 CFM. If so, then having a half-dozen of these on the stove should be more than enough to make a noticeable difference.

 

[turbo]

I just checked these out, and they can apparently provide around 100 CFM. If so, then having a half-dozen of these on the stove should be more than enough to make a noticeable difference.

Buy one and test the 100 cfm claim. You won't buy more.

 

[Dr Lots-o'watts]

Buy one and test the 100 cfm claim. You won't buy more.

Thanks for the review!

 

[russ_watters]

You can buy little steam engines...

 

[Dr Lots-o'watts]

You can buy little steam engines...

It would be interesting to compare with peltier devices.

 

[dawnbledsoe]

Well thank you for all the replies. My wood stove is in the living room and straight in front of the hallway I was looking to circulate the warm air down that hallway. But I want to take on a home project instead of buying one.

 

[Bob Engineer]

Hello I'm new to the PF? My main reason for posting was to understand how I may begin to create a heat powered fan for my wood stove? Would someone be willing to help please?

i also face this problem...

untill now i not know how to get heat my wood stove easily.

 

[Danger]

I like Russ' idea. You could build a small steam engine on or beside the stove, with a coil of tubing or a tank inside the stove as a boiler. (With the bonus that the exhaust would be a small-scale humidifier. ) It might be too noisy, though.
My own first thought was to put a turbine (just a simple pinwheel type) in the chimney with a driveshaft going to the fan, but I can't see that producing a lot of breeze.