details about future scope of induction heating
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Induction heating is the process of heating an electrically conductive object (usually a metal) by electromagnetic induction, through the heat generated in the object by eddy currents. An induction heater consists of an electromagnet and an electronic oscillator that passes a high frequency alternating current (AC) through the electromagnet. The alternating magnetic field rapidly penetrates the object, generating electric currents inside the conductor called parasitic currents. The parasitic currents flowing through the material resistance heat it by heating Joule. In ferromagnetic (and ferrimagnetic) materials such as iron, heat can also be generated by losses by magnetic hysteresis. The current frequency depends on the size of the object, type of material, coupling (between the working coil and the object to be heated) and the depth of penetration.
An important feature of the induction heating process is that heat is generated inside the object itself, rather than by an external heat source through the conduction of heat. Thus objects can warm up very quickly. In addition, there is no need for external contact, which can be important when pollution is a problem. Induction heating is used in many industrial processes, such as the heat treatment in metallurgy, the growth of Czochralski crystals and the refining of areas used in the semiconductor industry, and to melt refractory metals that require very high temperatures. It is also used in induction stoves for heating food containers; This is called induction cooking.