Fan Works

The main component is a bath ventilator fan of: AC motors. Its working principle is: electrical coil in a magnetic field by the force rotates. Form of energy is transformed: the main electrical energy into mechanical energy, and because the coil has a resistance, so that there is an inevitable part of the electrical energy to be converted into heat. When the fan work (assuming no heat transfer with the outside room) the room temperature is not only not reduced, it will rise. Let us analyze a cause of temperature rise: When fans work, due to current through fan coil wire is resistance, it will inevitably produce an exothermic heat outside, so the temperature will rise. But why people feel cool it? Because the body's surface has a lot of sweat, When bathroom window fan work together, indoor air can flow together, so we can promote the rapid evaporation of sweat, combined with "evaporative need to absorb a lot of heat," so people will feel cool.