Ecofan project!? Sourcing parts?

[ElectronicsAddict]

Hello all,

I am new to this forum so please forgive me I have put this in the wrong place and or this has nothing to do with this forum!

I am trying to make myself an Eco Fan http://www.ecofan.co.uk/technical-information.html to use on my log burner.
It is a low powered fan operated by a Thermoelectric Peltier module. The module uses a temperature differential to generate electricity which powers the fan. The fan then blows heat from the log burner across the room. Therefore you do not need an external power source nor batteries. The fan simply works when you start the fire.

Anyway,

My problem is that I am trying to find a small low powered motor which operates at low rpm i.e. 200 rpm at max voltage.

I am also trying to find a Thermoelectric Generator (module) (TEG) which outputs the same voltage as the motor at max output so that the rpm does not exceed 200 rpm.

I want a motor which is low powered as the fan blades will not be inside a cage therefore with a low powered motor, no-one can be harmed as the motor will simply stop if something gets in the way of the blades (light weight wooden propeller).

If anyone can point me in the right direction as to where to get some of these items, I would be extremely grateful.

Many thanks

ElectronicsAddict

[northferriby]

Hi,

Great to hear others have the same problem. I have built my fan for my multistove but are now refining it. The peltier units I used were from thermal enterprises, which can be bought on ebay. I found sourcing parts locally to be a challenge.

How did you find the motor? Do you know the specifications. I have heard it needs to be a high torque dc motor, probably of multi cores and bushless.

Hope you can help me on this by replying to my e mail address at northferriby@hotmail.co.uk

Many regards,

David