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Posts Tagged ‘Electric Generators’

Today’s nuclear reactors break apart big atoms and energy to heat steam and turn electric generators for our use. That’s by the process of nuclear fission.
Scientists have been working for over 50 years to try and sustain nuclear fusion, or the combining of hydrogen isotopes into helium and energy. As far as I know, there is no success as yet.
Will it ever come to pass? If so, when? Will it really solve all our energy problems if successful?
I doubt I’ll be around in 50 years to see the success of this.

need alist of someone to buy parts from for assemble of electric generators at home

I want a book that has some different designs for making electric generators from things like old exercise bikes, fan blades for wind power, low cost solar panels, or any other kind of alternative energy that is easily produced from the home, and with recycled or low cost materials. How to store the energy would also be a plus. All I can seem to find are book specifically for one type of alternative power(i.e. just solar, or just wind). I’m hoping there is something out there that is more like what I have described.
Well I was more hoping just for a book that shows simple electrical hook ups to say turn an old exercise bike into a generator of sorts. Things like that. I assumed old fans, and such wouldn’t produce very much energy, but If I use an exercise bike for an hour every day anyway I thought it would be cool to harness, store, and use some of that power to watch TV while im on the bike, or turn a radio on for a few hours or something along those lines. Just like those new crank radios.

At Hoover Dam, the water intakes are effectively about 220 m above the electric generators. How much water must pass through the generators to power 2.1 million 27-W Las Vegas lightbulbs for 6 minutes?

(HINT: This is a conservation of energy problem. All the energy comes from the falling water. Consider the electric generators to be 100% efficient.)

I am looking for a company that manufactures electric generators that uses solar energy.

Do you think it is plausible for us to install hydro-electric generators in the water piping in high rise buildings as an alternative electrical energy source? As an example, lets say there’s a person washing his hands on the 30th floor of a building, using a 50g mass of water. The gravitational potential energy of this mass of water, assuming that the height of the building is (30 stories x 2.5m) = 75m, would be MGH = 50g x 9.81ms^-1 x 75m = 36787.5 J. Assuming that no energy would be lost when the water is traveling down the piping to the generator which is at ground level (Height = 0) and the generator is 100% efficient, Kinetic Energy = Gravitation Potential Energy, the energy transferred from the moving water to the generator at the bottom would be = Gravitational Potential Energy at the top of the building = 36787.5 J. Assuming that the water passes through the generator within 2 secs, Power = 36787.5J/2 Secs = 18393.75Js^-1 = 18393.75 Watts. And if there is 100 people doing this once a day for a year, 671371873 Watts = 6.7 x 10^8 Watts would be generated!!!! That’s a huge amount of energy.

There are two electric generators that are equally the same, they are copies of each other and are built exactly the same and are indistinguishable from each other.
They are rotating at the same exact speed, but one of them has a stronger force exerted on it. Do they still generate the same amount of power?
thanks billruss! unfortunaltley, you’ll have to wait 4 hours until you get 10 points.

I’m looking for some smaller size electric generators, around 1k for now, but I don’t want the gas motor that comes with the big chain store bought ones. I just want the generator. I’m sure they’re out there…I just can’t get the right wording for on-line searches.

1. Why is a generator armature more difficult to rotate when it is connected to and supplying electric current to a circuit.

2. Some bicycles have electric generators that are made to turn when the bike wheel turns. These generators provide energy for the bike’s lamp. Will a cyclist coast farther if the lamp connected to the generator is turned off?

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?

This last question in my science homework is being completely impossible and the textbook is not helping me. Any help? What’s the difference between electric generators and motors? And how are they similar?