Thermoelectric Cooler Part 11 - How to fix a TEC & updates

I describe how to fix a broken TEC/peltier unit/thermoelectric unit. Part number TEC1-12709. I also show off a heat sink won from eBay.

I had to speed part of this video up by 25% to fit it into the allowed 10 minute time slot allowed by youtube.

Category:

Science & Technology

Tags:

• Thermoelectric
• Cooler
• Part
• 11
• How
• to
• fix
• a
• TEC
• &
• updates

[TaylorHolmes]

First of all, TECs are actually not really designed to be used as thermoelectric generators or voltage sources, but they CAN BE used as such.

What you should really look for, if using the seebeck effect, is something called a TEG (Thermoelectric Generator). It's very similar to a TEC.

For the part I used (TEC 12709), the R value is 1.3-1.5 ohms.

Temp differential is about 67 degrees C at 12 volts, so by S=dV/dT= 5.58V/C (degrees C). But once again, these are TECs, not TEGs.

[chop98]

@TaylorHolmes One year later I'm looking at TECs and not TEGs for a little over 6 bucks and that's including shipping on Ebay. For a price like that... you can buy 10 of 'em and have a stash for several years. TEC1-12709 is what I'm looking at for the item. Check it out, man. Save a bundle. And save on your car insurance. :)

[john60564]

@TaylorHolmes i am using a TEC1-12708. i am require to calculate the COP for this module.

what are the p-n elements are usually made of?? are they both BI2 Te3?? hmm how to we obatain the value of the electric resistivity and the value of thermal conductivity of the elements.

below show the heat transfer rate:

q=(αp-αn ) Tc I-K(Ta-Tc )-(I^2 R)/2

k= thermal conductivity

R= electric resistivity

[john60564]

hi taylor, i would wanna ask how could we get the seebeck coeeficeint value, electrical resistivity and thermal conductivity of the thermoelectric elements. do we need to know the what are the p-n elements are made of?