Powr from woodheat

[thirteen]

does anyone have some information on getting power from a woodstove exhaust pipe.  They have ones that are small fans you can put on the stove but I have not found one that mounts on the pipe itself. ( None electric ) Or an exhaust turbine of sorts using the exhaust from the pipe. I have a loft above the livingroom and would like to get more heat down quicker on the bottom floor.  It naturely circulates thru the house ok but takes about 2 1/2 hrs to get the house warm when we get there in the winter.  Just wondering if anyone has ideas  

[RogerAS]

Hi,

Look at northerntool.com for the Magic Heat for either 6" or 8" pipe. I think this is what you're looking for. Winter Flyer 2006 issue 1713 item # 17278-1713.  Good old fashioned paper mailer search. Add a small fan and that should move a lot of heat. Might collect creosote if used with green wood or with low damper settings with hardwood. Consider a good ceiling fan.

Not and endorsement, just a reference and I hope it helps.

[thirteen]

thanks. I am 3.5 years from being off grid and back in the mountains,  I am building a system  both hydro and solar.  the last kid graduates in 3.5 years  

[alcul8r]

The small units that sit on a stove work off a thermocouple effect.  They should not care what position they are in.  You would probably need single-wall flue, and could get better results if you made a solid block between the round pipe and flat bottom of the fan.  Perhaps cast from concrete or make an aluminum block?  Some electronic heat-sink grease might help with the transfer, too.

[Gordy]

I won't use one of those again!!! I and people I know used them years ago and had problems. They take too much heat out of the exaust, and the chimny runs to cool. This leads to condensation in the chimny and creasult build up, which means more frequent cleaning and chances of chimny fires. And NO green wood, all dried 2 years minumun in open sided shed.

Gordy