It's summer now and it's very hot at home without air conditioning, so many students have started using electric fans. Electric fans use the first and third speed, but the power consumption is. the two are not the same. Yes, third gear spins faster and uses more energy.
The power of the first and third power levels is different. The formula for calculating electric power is P=UI,
In our. vit The standard voltage is 220 volts, so the voltage here is stable, but the current in different gears is indeed different. You can use an ammeter to test this. So according to the formula, the power consumption of the electric fan in first and third gear is definitely different. We can think of it with the simplest idea. Whenwe consume the same amount of electricity,the wind energy that we can generate is the same, but during the rotation of the electric fan, at the same time. the third gear will receive more wind power. If the power consumption of both is the same, why are wind turbines built in places with strong winds but not in places without wind?
The working method of energy conversion electric fans is to convert electrical energy into internal energy and mechanical energy. Mechanical energy causes the air to rotate through the rotation of the fan blades, forming wind.The faster the motor spins, the more energy it generates and the more internal energy the motor generates. This is what we call heat. It can easily be seen in reality that when an electric fan is running, the faster it spins, the easier it is to generate heat, and when itspins very slowly, there is almost no heat. Due to the design principle of the electric fan, the rotation of the fan leaves cannot carry away the thermal energy of the motor. Therefore, from this point of view, the power consumption of the electric fan in first gear and. third gear is definitely different.
Based on the above, we can know that the power consumption of the two is definitely different, but there are also a difference Not too much, because the electric fan is an energy-efficient machine. Even if two identical electric fans are turned on at the same time all night, one in third gear and the other in first gear, the difference in electrical energy between the two will not be too great, just a few degrees .