Comments on: PELTIER THERMOELECTRIC COOLER Campfire Electricity

By: MrChawee1

MrChawee1 — Tue, 09 Feb 2010 17:22:18 +0000

I like this Idea- but have a question. Electricity makes it produce a hot side and cold side so you reverse it by putting heat to it generates electricity I get that part now if you were to try cooling the otherside instead of using heat- like putting it in the snow or on some dry ice would it also produce electricity? Or is it only the heat that produces the electricity?

By: GREENPOWERSCIENCE

GREENPOWERSCIENCE — Tue, 09 Feb 2010 16:47:36 +0000

Yes it would. The problem is more temperature difference, more current. It is easy to get +300f but difficult to get -300f.

Dan

By: biowerks

biowerks — Tue, 09 Feb 2010 15:56:34 +0000

Cool, I have a few of those peltier units that I have been playing with.

By: nearadyn

nearadyn — Tue, 09 Feb 2010 15:50:12 +0000

You mentioned you wanted thermal glue instead of thermal grease. I have a solution which i’ve used with my own peltier experiments several times. Get some lab quality finely powdered aluminum. It should be like dust not sand. FINE POWDER! I got 2 pounds of it off ebay for cheap. Mix it with 10min epoxy until you get the consistancy and same solid grey color as thermal grease. Problem solved! It’s MUCH cheaper than buying premade thermal glue and it works very well. Just wear a dust mask!!!

By: jrlakers84

jrlakers84 — Tue, 09 Feb 2010 15:21:02 +0000

Great video, learned alot. Just would have liked to see the peltier’s setup between the two pans as you made it. But either way, thanks for the vid!

By: helpmonkey

helpmonkey — Tue, 09 Feb 2010 14:46:49 +0000

omg … have you lost your mind?

By: hakanai

hakanai — Tue, 09 Feb 2010 14:14:20 +0000

you have to be careful because aluminum powder can explode if not handled correctly.

By: chop98

chop98 — Tue, 09 Feb 2010 14:10:35 +0000

I’m trying to make an ecofan using these devices. I want to put 3 small 12v fans pointed in various directions. Would I need a heatsink sitting between the Peltiers and the aluminum base? And should I run each fan with a separate fan? Thanks for any help.

By: definitionofis

definitionofis — Tue, 09 Feb 2010 14:00:41 +0000

makezine com/15/seebeck/

had a commentary about watts/volts/amps for various TEC modules.

By: definitionofis

definitionofis — Tue, 09 Feb 2010 13:37:23 +0000

Graph of temperature versus efficiency.
180 dgrees centrigrade is best.

sctbnord com/images/content/ZT%20graph_2.jpg