I noticed that the formua for Kinetic Energy (KE=.5mv^2) results in Joules, and Joules can be converted into Watts/Kilowatts, which is the same unit of measure as the energy output of electric generators.
So my question is this: If you have an electric generator that is powered by Kinetic Energy such as Wind or Hydro power, is the calculation for how much energy the generator will generate simply the amount of kinetic energy multiplied by some "Generator efficiency" percentage? And if so what is that percentage called?
2007-02-23 10:42:37 · 2 answers · asked by Ray of Freaking Sunshine! 2 in Science & Mathematics ➔ Engineering
Your physics is correct. There will be an overall efficiency for the turbine, (any gearbox) and generator in converting kinetic energy into electrical power. I am not aware that it has a special name.
The efficiency, however, will depend on the design, in particular of the turbine which is likely to be lower than the generator, and will vary with the operating conditions.
2007-02-23 11:40:14 · answer #1 · answered by Robert A 5 · 1⤊ 0⤋
Your kinetic energy formula also needs to tell you how much horse power the kinetic energy source is capable of. Each unit of horsepower is equal to 745 watts of electrical energy. The efficiency that you ask about is related to frictional losses within the equipment.
2007-02-23 13:25:49 · answer #2 · answered by Anonymous · 1⤊ 0⤋