Peltier: Thermoelectric Cooler
Peltier devices use the Peltier effect to transfer heat from one side of the device to the other. Thus, one side gets heat removed (and becomes cooler), and the other side receives the heat. These devices are generally used as thermoelectric coolers. To keep the cool side cold, the heated side must have its heat removed, usually done through a heatsink.
Shown is my peltier device. The heated side has a 6cm x 6cm CPU heatsink with a fan. There needs to be a good thermal contact between the peltier device and the heat sink. The best way would be to use thermal paste, however it does not provide a strong bond. I chose to use thermal tape instead.
A 60mm fan is mounted on top of the heat sink. The fan is rated for 12v, the same as the peltier, so I spliced the wires together to run off of the same 12v supply.
The ambient room temperature is 77.6 degrees Farenheit.
After about a minute on a 12v supply, it is at 28.8 degrees Farenheit. Below freezing!