don't wind turbines use a lot of power to make them rotate?

Question

how do they make more than they use then? would it help if the blades were made of solar panels?

Answer 1

The blades for the turbines are not really turned by the wind. At the bottom of the tower that the blades are sitting on are several bicycles that are mounted off the ground and with the tyres removed from the back wheels. A long length of rope goes around the wheel rims to the turbine at the bottom of the tower and persons that have committed unforgivable "environmental crimes" e.g. putting dustbin out too early, not using 'energy efficient' electrical equipment, putting too much water in the kettle, taking a bath and not a shower, failing to re-cycle glass and paper, etc etc. are then seated on the saddle to pedal and generate energy. One bicycle wheel is actually connected to the blades to give the appearance that the wind is turning them.

Answer 2

The performance of a rotating sail ( or wing) relies upon on air density, floor section, speed of azimuthal directionality substitute in attitude, speed of non-end contemporary, digital contemporary voltage load regulation, blade pitch ( variable pitch verses fixed pitch ex.: severe skew curvature close to the axis flatting faraway from the axis) , prop variability ( rotation of prop blades from the x axis). the common equation is P= I x E. This common equation potential that ability out varies with the present and the Voltage ( E is Voltage ). we are assuming that we want voltage to proceed to be consistent. In Direct contemporary it somewhat isn't very difficult. So, at gradual wind speed and incessant voltage the present will physique of suggestions 0 ( in some flux eq.), so as that inspite of the reality that voltage is maintained an extremely gradual cost will take place on the DC electromotive tension used to ability the ability inverter. So somewhat the slower the wind speed the fewer the batteries would be charged or bypass into the release mode of configuration. you need to comprehend that as long via fact the release of the battery equals the enter of contemporary then the equipment is perpetual equalization baring any electric powered or mechanical wreck down ( this additionally potential the battery ability regulation stuff) .

Answer 3

Wind power is the way ahead, I have just purchased a wind powered Japanese T.V. works fine although climbing onto roof can be irritating.
The windpower needed is supplied by the butterfly effect, a butterfly flaps its` wings in Sri Lanka and when it gets here it`s blowing at 40mph,millions of caged butterflies are noised up at different times to supply a steady breeze.

Answer 4

Remember the pinwheels as a kid? You blow on them or the wind hits them and they start spinning.

A wind turbine is a giant pinwheel. They then take that rotary motion, and use it to generate electricity. No power is used in turning them, the wind does that.

Answer 5

I think you mean do they lose a lot of power in the generation process...you don't get something for nothing...In fact I don't have the exact figures but they are not the most efficient power generation method by a long way, and of course what happens when it isn't windy....you can't store electricity like gas so you have to have a ready standby to fill the gap..I'm all for the nuclear option.

Answer 6

They don't make more power than they use, but the power they use is FREE! So that what they do make is a bonus. Also they absorb power from the wind helping (in a very insignificant way) to reduce gales, hurricanes and storms.

Answer 7

they only use the power of the wind not electricity that is why they are always sited very high so as to catch the wind

Answer 8

huh?

Actually, they use the left over energy from the wave machine that makes the surf in the Pacific ocean. The Atlantic Ocean wave machine is at full capacity. It is smaller and was built in the late 1800's.

Answer 9

No, the wind pushes them around. Nothing else is needed.

Answer 10

Sure, but think how hot the cows would get without them.