peltiers-thermometric coolers-tec device

Peltiers are also called Thermometric coolers (TEC), They operate according to the Peltier effect. The effect creates a temperature difference by transferring heat between two electrical junctions. A voltage is applied across joined conductors to create an electric current. When the current flows through the junctions of the two conductors, heat is removed at one junction and cooling occurs. Heat is deposited at the other junction.
This device has many applications, mainly protecting sensitive electronics from heat. And also in Refrigeration.