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solardan1959

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Reply with quote  #1 
Just found these neat modules that produce electricity from heat!
http://tegpower.com/pro3.htm
[5_6TEG]
If you mounted them in your air or water,water is probably better because it may be a hotter panel, you could also produce electric.  Ckeck out the website it some interesting reading.
Dan

kuku202

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Reply with quote  #2 
In the long term, is it feasible that the frame of panels may deteriorate, seals may go and even cables deteriorate or get damaged and then that will present a risk? 
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kaleem
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Reply with quote  #3 
Quote:
Originally Posted by solardan1959
Just found these neat modules that produce electricity from heat!
http://tegpower.com/pro3.htm 
Dan the link doesn't work for me.

Edit to add that
http://www.tegpower.com/
redirects to
http://www.tegmart.com/
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stmbtwle

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Reply with quote  #4 
Those things have been around for a LOOOONG time. They're called "thermoelectric modules", Google 'em. With the application of heat, they'll generate electricity, and with application of electricity they'll generate heat (or cold). Remember those "solid state" refrigerators that never could quite keep your beer cold? Same critter. Filled with ice, one will even generate a little bit of electricity (done that).

They DO work, but they're not very efficient. If you want solar electricity, you're better off with a PV panel.

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Willie, Tampa Bay
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Reply with quote  #5 
I suppose at 5%-8% efficiency these may be useful for driving a fan. Any idea on the prices and operating temps?
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solardan1959

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Reply with quote  #6 
Here's a starting point, http://www.tegmart.com/thermoelectric-modules/

Tegmart went out of business but you can buy the modules. Since they are made to run off of heat I do not think we can generate too much to hurt them.  My bigger concern would be at what point they start generating enough power to run a fan.

Dan
Garage_Hermit

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Reply with quote  #7 
Hmm,  interesting stuff...: using heat to generate electricity...

(personally, I'd prefer steam...)

G_H

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stmbtwle

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Reply with quote  #8 
With enough of them you can run most anything, the issue is cost. I remember one that replaced a section of diesel exhaust, and allegedly generated enough power from waste heat to replace the alternator, thus saving fuel. They were darn proud of it though.

5-8% efficiency is about HALF that of a PV panel... get a price and do the math.

Where I think they might work well is attached to the chimney of your wood stove...


More here: http://www.inbthermoelectric.com/thermoelectric-modules-2/high-performance/

http://www.inbthermoelectric.com/inb-c1-127-08hts/

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Willie, Tampa Bay
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Reply with quote  #9 
Minutes 5-20 of this video show the thermoelectric circuits and how integrating them into a solar tube can generate large temperature differentials for electricity while still converting most of the sunlight to heat for hot water. Cool, but not a diy project. 
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