An example of commercial products using thermopiles and thermoelectric cooling
can be found at
http://www.ferrotec.com/products/thermal/modules/?_kk=peltier%20cooling
<http://www.ferrotec.com/products/therm
l/modules/?_kk=peltier%20cooling&_kt=e4
8edb3-4114-48f2-84aa-a70b8b7d54f5&gclid=CKS2m4byjo4CFTyKOAodwlf8EA>
&_kt=e418edb3-4114-48f2-84aa-a70b8b7d54f5&gclid=CKS2m4byjo4CFTyKOAodwlf8EA
Bob Johnson
Tarver, Peter wrote:
From: Bill Owsley
Sent: Friday, August 24, 2007 5:40 AM
Have you ever reversed the current across one of these and
noticed the junction gets cold?
Since the Seebeck Effect and Peltier Effect are supposed to be
essentially the inverse of one another, this might prove an interesting
experiment. Although, the voltages involved in thermocouples is smaller
than any power supply I have in my lab can regulate to.
Two identical thermocouple types with the beads in intimate contact with
one another. Welding into a single bead might even be OK. Apply an
appropriate voltage to one pair, while observing the effect on the
other. Then reversing the polarity to observe whether or not the
temperature moves in the opposite direction.
If someone has the time, inclination and a regulated microvolt/millivolt
source, I can donate some older thermocouple wire I've saved that's too
short for anything other than repairs or to add a little length to
another pair, and the welding labor. To save on postage (which will
have to be out of my own pocket), I'd prefer someone in the US.
Regards,
Peter L. Tarver, PE
[email protected]
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