What looks to be a homemade ecofan

[Gunner]

http://www.youtube.com/watch?v=8Sd16qVkBfg

 

[Andre B.]

The Ecofan is a thermoelectric module that makes electricity for a electric motor that turns the fan.
http://en.wikipedia.org/wiki/Peltier-Seebeck_effect

The Free breeze is a hot air engine fan made in Canada.
(broken link removed)

Edit: Link to an animation.
http://library.thinkquest.org/C006011/english/sites/stirling.php3?v=2

There is another hot air engine fan made in the states but I am blanking out on the name at the moment.

 

[Roospike]

http://www.youtube.com/watch?v=8Sd16qVkBfg

Looks like a cookstove ?

Has bricks around the stove , a high dollar electric free fan and the stove is sitting in front of a window .............nice.

 

[Gunner]

WOW $279...I thought the eco's were spendy

 

[Andre B.]

WOW $279...I thought the eco's were spendy

Here is the other one.
http://www.thermalengines.com/

A little cheaper and a lot cleaner looking design.

If you know anything about low volume manufacturing you know that for a mechanism this complicated it's not going to get much cheaper without having a big impact on quality.

Even as it is I question now many hours of operation one could get, a few thousand at most I would think, and that is not much on something like a stove. A good target lifetime for something like this should be 50 to 100 thousand hours.

 

[babalu87]

WOW $279...I thought the eco's were spendy

Yeah, no wonder he has a GHETTO Fabulous cinderblock wall next to the stove

 

[begreen]

Looks like cheap thermal mass surrounding 3 sides of the stove.