A Peltier cooler is a refrigerator based on a solid-state component, which serves as an active heat pump and transfers the energy (in the form of heat) from one side of the device to the other. During this process, the electrical energy consumption depends on the direction of the current. The most important feature of this device is that It can be used either for heating or cooling, using a minimum of electrical power. In practice, the main application is cooling.
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