Peltier / thermoelectric module.

The specification or data sheet for these devices will tell you all that information....

when you roadkill peltiers from discarded coolers, they rarely come with a spec sheet or manufacturer data. These were intended for cooling, not electrical production, therefore the spec sheet would be useless anyway. Does anyone in here know the right temp range to run them at for electric generation.

Nope. Not a clue. Can't you measure the output while running through the temp range available? You should be able to find the most efficient operating temp. that way.

Cheers.

Yes, i think i may just have to resort to the ancient chineese electric skillet thermostat trick. You see, i have wood heat. I also have 5-55 gallon drums of water encircling my stove to distribute the heat better and more evenly. I heat about 1300 sq feet with 2-3 armloads of firewood for 24 hours I was just trying to figure out if they should be placed on the stove, barrels of water, or the exhaust stack. I can bring cool outside air in along their heatsinks if i have to to get the right temps, as soon as i can find out the right temps,lol. I am trying to avoid burning any of them up.

Once the RS Components Ltd had a wide range of Peltier devices & a detailed Application Note was available with the order.

Try if they still have.

WRONG!!!

Look up any data sheet on peltier devices, they will always tell you the information you need.

You may have to estimate the number of junctions and size of your scavenged parts but the temperature range and operating characteristics will be similar.

"Look up any data sheet on peltier devices, they will always tell you the information you need."

I tried doing that. It's not a trivial task! Could you provide a link? From what I found, generally the ∆T can be around 50K (50°C), although I gather that there do exist high temperature units that can withstand up to 200K.

NOT WRONG, different peltiers are made from different metals therefore have different thermal charachteristics, that much i do know. And i dont plan to destroy them and have them assayed to learn what they WERE made of. And these things are sealed up, so they only have 2 junctions, one for the positive wire and one for the neg wire.If you dont have numbers, you have nothing to offer. Thank you for your input. c

Most TE coolers are assembled with low temperature solder that limits the hot side temperature to about 90 degrees C.

Thank you welderman. I only have a few, and didnt want to disable any of them through trial and error.

GA for a good link....

Thank you for more good info.

Thanks for GA

Electroman and ageniusforhire !!!!!