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Time：2022-07-19Views：0
The main components of the electric fan are: AC motor. Its working principle is: the energized coil rotates under force in the magnetic field. The form of energy conversion is: electrical energy is mainly converted into mechanical energy, and at the same time, due to the resistance of the coil, it is inevitable that a part of the electrical energy must be converted into heat energy.
When the electric fan is working (assuming there is no heat transfer between the room and the outside world), the temperature in the room does not drop, but rises. Let us analyze the reasons for the temperature rise: when the electric fan is working, since there is current passing through the coil of the electric fan, the wire has resistance, so it will inevitably generate heat and release heat to the outside, so the temperature will rise.
But why do people feel cool? Because there is a lot of sweat on the surface of the human body, when the electric fan works, the air in the room will flow, so it can promote the rapid evaporation of sweat, combined with "evaporation needs to absorb the electric fan.
A lot of heat", so people feel cooler.
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