It is not possible to use the wind resistance of a car to generate wind energy
Because
According to the law of immortality energy
the power to drive the generator comes from the power of the car
means the torque of the car is increased
which means that more fuel is consumed
which is meaningless. For example, if wind resistance is used to generate electricity
the power generated is not high
and has no use
and
the speed is very unstable
The most important thing is
The car generator itself already provides the relevant functions.
It's doable, but it won't happen that way. In other words, wind resistance will be used to generate wind power.
There will be a. reaction force on the vehicle system, which will slow down the vehicle speed. If heis used to generate electricity in this way, the extra oil (electricity) used to configure the car is converted into electricity. you generate with the wind
The so-called wind resistance is a relative reaction force. In other words, you must first have action force before you can have reaction force, and action force must be obtained. pay for the energy, so you're just converting the energy, so it's fine. In fact, the car already has two energy converters. One is to use the DC generator driven by the car engine to provide battery charging current, and the second is to drive. The air conditioning compressor ensures the operation of the air conditioning.
It's doable ~ but you need to set up the bike for a long time ~ If you don't use it, you will have a lot of battery ~ Wind resistance is not a factor ~ There is tellement many people ride bicycles--
Are the upper and lower diameters of the wind tower the same?
The design of the blades is based on the speed of the motor.
First determine the speed and power of the generator, then the size of the blades will be determined.
There is a formula for wind power generation: P=?ρ*π*R?*V?*Cp
ρ——air density;< /p>
V—— Wind speed;
Cp - wind energy utilization coefficient
If it's the same generator and you make blades of different sizes, of course, in theory, The generator with a larger blade area can operate at the same wind speed. Spin faster, because the power output P is greater at that time, as you can see in the formula above.
π*R? Here, R is the radius of the blade scanning area.
The principle is that you use the same engine.
Of course,Larger blades are not better, as excessive motor speed will cause heat and damage.
Would the questioner wish to ask: “Are the top and bottom diameters of wind towers the same? » Are the upper and lower diameters of wind towers different? According to relevant public information, the design and manufacturing of wind towers should consider many factors, such as wind turbine model, hub height, wind field environment, bearing capacity, etc., so the upper and lower diameters are different. The lower diameter of the wind tower is larger, which can improve the bearing capacity and stability of the tower, while the upper diameter is smaller, which can reduce the weight and stability of the tower. wind improves the rotation efficiency of wind turbines.