You must first own a windmill to receive wind energy. Then make a device like a bicycle chain drive to transmit the wind force received by the windmill to the generator, and then install the generator. In this way, a small and simple generator is ready.
But it doesn't matter when it's windy. What if there’s no wind? Haha, the equipment to store electricity is quite expensive.
Added answer
I think it may not be easy for you to do it yourself. First of all, the design of the fan blades should always remain oriented towards the wind direction, and it should be reinforced. Additionally, the rotation of the fan blades drives the generator, so you must at least have a speed-increasing device in order to get sufficient power. Recently you need to configure a battery.
Can industrial exhaust fans bee used as wind turbines?
Do you want to make a perpetual motion machine? Although unrealistic, the spirit is good. The charging voltage of electric vehicles is generally 48 V, current 3 to 8 amps, so your generator is several times larger than a small 15 W fan. In addition, letting an electric car drive a generator also consumes electricity. energy and the battery will soon run out of power. It's great to make a small generator for fun.
No, although the blades of general industrial exhaust fans are large and absorb more wind energy, their motors are also huge to turn them. The energy absorbed by the fan blades is the same. identical to that of the engine. The energy required for rotation is really negligible in comparison. It can't turn the engine at all, and naturally can't achieve the purpose of generating electricity.ity. If you want to generate electricity, it's best to upgrade to a motor. smaller engine
The above is just my guess, I haven't seen an industrial exhaust yet. The poster himself saw the operation based on the actual situation. If you don't know how to do it, you can leave me a message. I am very interested in physics, but I must declare in advance: I am 18 years old and. have completed secondary education. If you trust me, I will ask you. If you don't, I will reject you.