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Description: Thermoelectric coolers (TEC or Peltier) create a temperature differential on each side. One side gets hot and the other side gets cool. Therefore, they can be used to either warm something up or cool something down, depending on which side you use. You can also take advantage of a temperature differential to generate electricity. The thermal tape listed below works very well to attach heat sinks to the hot side.
This Peltier works very well as long as you remove the heat from the hot side. After turning on the device, the hot side will heat quickly, the cold side will cool quickly. If you do not remove the heat from the hot side (with a heat sink or other device), the Peltier will quickly reach stasis and do nothing. We recommend using an old computer CPU heatsink or other block of metal to pull heat from the hot side. We were able to use a computer power supply and CPU heatsink to make the cold side so uncomfortable we could not hold our finger to it.
Note: It is imperative that a heat sink is used on the hot side of the module. Running the module without one can cause damage to this part. If it’s too hot to comfortably touch, you’re in the danger zone!
Based on 4 ratings:
1 of 1 found this helpful:
I made a Seebeck Generator and it was awesome. See it here: https://youtu.be/wqgAroBRL0Q
…but it came with no brand name, no manual, no specs, no instructions, nothing… And also found after ordering these there are cheaper yet equal or better quality tecs elsewhere. But they are well made and work great. Finally blew one after heating to over 430 degrees Fahrenheit fyi
Hi, To save on wasted materials, we generally do not ship printed material with our product. We do still share as much pertinent information as possible on the product pages.
I have to agree with the some of the previous reviewers comments on this device, those being that it is well made and works great.
The way I tested for the cold and hot sides was by connecting a 1.5 volt AA battery, positive to red and negative to black and holding the wires in place for 5~10 seconds. Even at that low voltage and current I was able to easily figure out what side was what.
After, I mounted an old CPU cooler with fan to the hot side using the “Theragrip Thermal Tape” sold here and all is well with it cooling my laser diodes since I bought it a few weeks ago.
This reasonably priced electronic marvel has proven to be not only a captivating instructional device for my middle school students (my 6th graders think that I am a magician when I make a propeller spin using hot and cold water to create a temperature differential to power a motor) but also as a necessary heating or cooling component for some of my 12th grade Capstone project students. It also serves as an additional instructional example of the “two way street” nature of electrical components such as motor/generator and electromagnetic induction.
In order to get the best performance from a Peltier module, you need to be able to remove as much heat as possible from the hot side of the device. Several customers report that a PC water cooling setup is the best way to get dramatic heating and cooling results. If you’re not using a water cooling setup, you need a substantial heatsink and fan to keep the module from reaching a warmish, useless equilibrium. No matter what you use, it needs to be very firmly attached with thermal grease/epoxy in the middle. Running the device without a heatsink on the hot side can permanently the module.
Reversing the polarity will switch which side is hot and which is cold, so you could, for example, heat & cool the inside of a box with one Peltier. A simple DPDT switch could be use for this, or if you prefer to do it electronically, a H-Bridge would work.