admin answers:

Wind power provides very little net energy. It is a non-starter. The use of plastics in wind turbines (as in ALL turbines) is a non-issue and completely misses the point.

Wind energy is a tempting IDEA but a disappointing reality. Wind power is so unreliable and variable that equivalent standby power has to be available all the time, wasting energy. Wind turbine construction is heavily subsidised and the electricity produced (even without allowing for the hidden cost of standby cover) is so expensive it is uneconomical. Power companies only buy wind generated power because they HAVE to by law and they cover the excessive cost by charging us more for ALL our electricity. If it wasn’t for the subsidies (direct grants plus subsidies through us paying more for conventional power) there would be no wind energy in the UK. It is an appalling waste of money that could be better spent on more productive, more economical, more reliable power generation using other technologies.

Tidal power is stronger and totally predictable but receives only a fraction of the subsidy of wind power. Ignoring ideology and looking for a realistic practical solution, we need to be building nuclear power capacity plus clean-burn coal fired power stations with tidal power as a longer term source.

admin answers:

The ability to generate electricity is measured in watts. Watts are very small units, so the terms kilowatt (kW, 1,000 watts), megawatt (MW, 1 million watts), and gigawatt (pronounced “jig-a-watt,” GW, 1 billion watts) are most commonly used to describe the capacity of generating units like wind turbines or other power plants.

Electricity production and consumption are most commonly measured in kilowatt-hours (kWh). A kilowatt-hour means one kilowatt (1,000 watts) of electricity produced or consumed for one hour. One 50-watt light bulb left on for 20 hours consumes one kilowatt-hour of electricity (50 watts x 20 hours = 1,000 watt-hours = 1 kilowatt-hour).

The output of a wind turbine depends on the turbine’s size and the wind’s speed through the rotor. Wind turbines being manufactured now have power ratings ranging from 250 watts to 5 megawatts (MW).

Example: A 10-kW wind turbine can generate about 10,000 kWh annually at a site with wind speeds averaging 12 miles per hour, or about enough to power a typical household. A 5-MW turbine can produce more than 15 million kWh in a year–enough to power more than 1, 400 households. The average U.S. Household consumes about 10,000 kWh of electricity each year.

Example: A 250-kW turbine installed at the elementary school in Spirit Lake, Iowa, provides an average of 350,000 kWh of electricity per year, more than is necessary for the 53,000-square-foot school. Excess electricity fed into the local utility system earned the school $25,000 in its first five years of operation. The school uses electricity from the utility at times when the wind does not blow. This project has been so successful that the Spirit Lake school district has since installed a second turbine with a capacity of 750 kW. (For further information on this project, see at the Web site of the International Council for Local Environmental Initiatives.)

Wind speed is a crucial element in projecting turbine performance, and a site’s wind speed is measured through wind resource assessment prior to a wind system’s construction. Generally, an annual average wind speed greater than four meters per second (m/s) (9 mph) is required for small wind electric turbines (less wind is required for water-pumping operations). Utility-scale wind power plants require minimum average wind speeds of 6 m/s (13 mph).

The power available in the wind is proportional to the cube of its speed, which means that doubling the wind speed increases the available power by a factor of eight. Thus, a turbine operating at a site with an average wind speed of 12 mph could in theory generate about 33% more electricity than one at an 11-mph site, because the cube of 12 (1,768) is 33% larger than the cube of 11 (1,331). (In the real world, the turbine will not produce quite that much more electricity, but it will still generate much more than the 9% difference in wind speed.) The important thing to understand is that what seems like a small difference in wind speed can mean a large difference in available energy and in electricity produced, and therefore, a large difference in the cost of the electricity generated. Also, there is little energy to be harvested at very low wind speeds (6-mph winds contain less than one-eighth the energy of 12-mph winds).

admin answers:

Geothermal power is power extracted from heat stored in the earth and comes from radioactive decay of minerals and from solar energy absorbed at the surface. It’s used to heat up baths and for generating electricity. Geothermal power is cost effective, reliable, and environmentally friendly, but has previously been geographically limited to areas near tectonic plate boundaries.Geothermal wells tend to release greenhouse gases trapped deep within the earth, but these emissions are much lower than those of conventional fossil fuels. As a result, geothermal power has the potential to help mitigate global warming if widely deployed instead of fossil fuels. As of 2004, five countries (El Salvador, Kenya, the Philippines, Iceland, and Costa Rica) generate more than 15% of their electricity from geothermal sources.

admin answers:

It’s a big piece, but I hope you get all the info u need =)

1. The process of harnessing energy from the ocean’s tide is very similar to that of harnessing water through a hydroelectric dam. However, the dam needed for this process is much larger. Installed within the dam are turbines. The movement and flow of the tide in and out from the shore is then used to turn those turbines and create the power needed.

(2,3,4 question) There are two ways at present of using tidal power:

Barrage systems: This system, built like a dam across a river, holds back the water till the tide has gone out, then uses the potential energy of the water to turn turbines in the barrage. This is an expensive system with many disadvantages.

Tidal Stream systems. This consists of using turbines, rather like wind turbines, to use the kinetic power of the moving water to generate electricity. This is easier and cheaper to install.

There are three Barrage systems operating throughout the world.

One large 240 MW plant on the Rance River in France, and two small plants,

one in the Bay of Fundy in Canada, and

another in Kislaya Guba in Russia.
There is only one Tidal Stream system working commercially:

A fullsize turbine prototype, SeaGen, was installed in Strangford Lough in Northern Ireland in 2008, with a capacity of 1.2 MW.
A large number of smaller tidal stream pilot schemes are being trialled.

-In Hammerfest, Norway a turbine, generating 300 kW, started in 2003.
-A 300 kW Periodflow marine current propeller type turbine was tested in Devon, England in 2003.
-Since April 2007 a prototype project in the East River in New York City has been running.
-An Open-Centre Turbine, has a prototype being tested at the European Marine Energy Centre (EMEC), in Orkney, Scotland.
-A Gorlov turbine, an improved helical design, is being prototyped on a large scale in S. Korea.
-Neptune Renewable Energy has developed Proteus which uses a barrage of vertical axis crossflow turbines for use mainly in estuaries.
-During 2003 a 150kW oscillating hydroplane device, the Stingray, was tested off the Scottish coast.
-Successful commercial trials of highly efficient shrouded tidal turbines on the Gold Coast, Queensland, Australia in 2002.
-Shrouded turbines are being installed for a remote Australian community in northern Australia, two small turbines will provide 3.5 MW.
-Another larger 5 meter diameter turbine, capable of 800 kW in 4 m/s of flow, is planned as a tidal powered desalination showcase near Brisbane Australia in October 2008.
-The Hydro Venturi, is being tested in San Francisco Bay.
-In April 2008, a turbine-generator unit (TGU) prototype was successfully tested at Cobscook Bay and Western Passage tidal sites near Eastport, Maine.
-Trials in the Strait of Messina, Italy, started in 2001 of the Kobold concept.

(4,6,7) Tidal energy use harnesses the water flow created primarily by the moon orbiting the Earth. As water is pulled toward the gravity of the moon, currents are created that can turn generator turbines.

Volumes have been written about tides and their effects on our planet. This Wikipedia Tides article is a good primer on the subject. It is noteworthy that all tidal energy does not come from the moon. About a third of it comes from the gravitational influence of our sun.

The interplay of gravitational fields of the moon and the sun combined with the rotation of Earth, creates a twice a day ebb and flow of the tides of our world that varies in height and strength.

Those variations in height and strength are completely predictable. As we’ll see later, that predictability is an important aspect of tidal energy use.

Though renewable, practical tidal energy use will be limited. Tidal flows are global, but the key to using them economically is finding either natural high tidal flow areas, or large tidal basins that can be easily dammed to channel water through turbines. _________________________________________________________________

ENVIRONMENTAL FRIENDLINESS –

Tidal energy use involving dams creates many of the same environmental concerns as damming rivers. Tidal dams restrict fish migration and cause silt build up which affects tidal basin ecosystems in negative ways.

Systems that take advantage of natural narrow channels with high tidal flow rates have less negative environmental impact than dammed systems. But they are not without environmental problems.

Both systems use turbines that can cause fish kills. But these are being replaced by new, more fish friendly turbines. The art and science of environmentally friendly hydro engineering is well advanced and will certainly be applied to any tidal energy project.

But even with dams, the environmental impact of tidal energy projects may prove to be smaller than our use of any other energy resource. Economics will severely limit the number of tidal energy projects. ______________

admin answers:

I don,t have any plans on paper but, they sell windmills as decorations on landscapes. Look them over and see if they have a shaft with two pillow blocks so you can attach a pully. Then go to an auto junkyard and get an old 12 volt generator. Put a pulley on both the windmill shaft and the generator, ( which of course will already have a pulley on it), then an appropriate belt to connect them both. If you have the knowledge, you can wire in a voltage regulator.

To protect the system from over speeding in excessively high winds, a centrifical throwout clutch could be attached to the end of the windmill shaft.

Hope this helps, and good luck.

admin answers:

There is a free download of plans at http://verticalwindgenerator.net/ . You just have to be on the site for a few minutes then a form coms up. Fill it out and you’ll get the plans.

admin answers:

Much less than 3%. Much better to insulate your loft, install double galzing or get your cavity wall insulation completed. Better still, turn down your thermostat and get low energy lighting. Putting wind turbines, on an individual basis, on your home is a waste of time and money. It’s done by politicians and rich people as a form of posturing – like look how good we are!!

admin answers:

Well, they have to be about 30 feet above any surrounding buildings or trees, they have to be two tower heights distant from any building and they must fall entirely on your land should they fall in any direction so unless you have an acreage, you’re not getting a wind turbine.

Do it yourself turbines from the 70’s were typically made with an automobile alternator and therefore the maximum power ratings were about 720 watts with them. A quick look at the wind turbines listed on Amazon shows that most are about 450 watts and some are 750 watts. Keep in mind that you can only expect production 1/6 th of the time, the most you would get out of one of the larger turbines would be about 1/10th of the average home energy use.

admin answers:

You will need blades for the wind to turn, a generator to produce power. Use the power from the turbine to charge the battery, then power you devices from the battery, in America most small appliances use 120volts at 60Hz ( so you will need to produce this somehow, though look at the specification of your appliances). For the basics this video is good

Using an inverter would be the easiest way I know to get AC from the battery though make sure the amps you apliemces need are not to high

admin answers:

Charge a large Battery

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Solar can be down anywhere in the South, Az, So Cal and NM are going to be big solar energy centers.

Texas though will again export huge amounts of energy in the forms of Wind energy harnessed primarily in West Texas which will become one of the biggest wind energy generators, tidal energy from the coasts, Methane production due to population and ease of harnessing it, though Alaska will be the top Methane producer most likely.

admin answers:

The owners of the area you want to live in.

Added – and the state and/or federal government who is charged with providing for your safety…

admin answers:

Why don’t you build your own. You Yanks need jobs yea?

admin answers:

Biofuels might need a chemical or maybe petrochemical engineering degree. Wind power would probably need a mechanical engineering degree. Solar panels – maybe electrical engineering?

Why not look for a program that offers environmental engineering? Maybe you’ll find a school that gives you some good basics in all three areas. Or get the ME, and get a minor in chemistry. I would think that any decent engineering school would give you SOME background in electricity also, so the minor will help you cover the bases for the job you want.

admin answers:

1) DC electric generator, to charge batteries directly and run DC
appliances or inverters run from batteries to give you AC current

2) AC synchronous generator. These AC generators get field excitation directly from your electric company so if the electricity goes down from the power company, so does your generator. But the good thing is they are synchronized with the Hz of (60Hz) and you don’t need an inverter to and batteries to smooth out the sine wave of current and voltage. You get a steady 60 cycle current.

3) regular AC induction motor.This will produce electricity that has to be used on the spot (converted to heat water or something) and has variable frequencies depending on rotor speed of turbine. But it can be run thru diodes (just like car alternator) to convert to DC to charge batteries. And then the batteries are run to power DC equipment or run thru an inverter for things that need AC

admin answers:

I think that you would be better off by going to Google and typing in such things as wind generators.

Good luck

admin answers:

The state review board is looking into it to decide if the price hike is legal. Unfortunatly it could take up to three months to decide if it is legal.

admin answers:

Are you good with math and sciences? You could go about this two different ways. You could go the more techincal route or you could go the more hands-on route.

If you are more techincal you could look into going into Electrical Engineering. This is not an Easy major so you would have to consider that in most cases this a 4-5 year investment. However you would learn about most of the principles behind how we generate, route, and use electricity. You would also learn the skills needed to design some of your own ideas. If you don’t have 4 years to spend learning. This may not be an option. Electrical Engineering requires you to go through all of the maths… (algebra, trig, Calc 1-3, Differential Equations, etc…) also all of the basic sciences, Chemistry, physics, thermo dynamics, etc.. And then onto your EE courses. Once you have your batchelors degree you can take your EIT (engineer in training) test or equivalent. After a few years experience you can then apply to take the PE (professional Engineer) test which would allow you to design, build, and sign off on projects. (a requirement in most states)

Another route would be to go to a 2 year Tech school for electronics or to be an electrictrian. These would give you a more hands-on knowledge of how physically connect and work on the devices you are interested in. You may not learn how to design a system but you could sure hook one up. This may require you to get an apprenticeship with an established electrician but it would provide good experience.

admin answers:

For you, FOREVER.

This is Words & Wordplay.
Ya gotta learn ta read first.

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No. They may design them and build the prototype (with lots of help), but technicians. Electricians and mechanics will build them.

.

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Both wind and water can turn turbines connected to generators which will generate electricity.

Http://en.wikipedia.org/wiki/Wind_turbine

http://en.wikipedia.org/wiki/Hydroelectricity

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There are many different machines and transducers that convert one energy form into another. A short list of examples follows:

Thermoelectric (Heat → Electric energy)
Geothermal power (Heat→ Electric energy)
Heat engines, such as the internal combustion engine used in cars, or the steam engine (Heat → Mechanical energy)
Ocean thermal power (Heat → Electric energy)
Hydroelectric dams (Gravitational potential energy → Electric energy)
Electric generator (Kinetic energy or Mechanical work → Electric energy)
Fuel cells (Chemical energy → Electric energy)
Battery (electricity) (Chemical energy → Electric energy)
Fire (Chemical energy → Heat and Light)
Electric lamp (Electric energy → Heat and Light)
Microphone (Sound → Electric energy)
Wave power (Mechanical energy → Electric energy)
Windmills (Wind energy → Electric energy or Mechanical energy)
Piezoelectrics (Strain → Electric energy)
Acoustoelectrics (Sound → Electric energy)
Friction (Kinetic energy → Heat)

http://en.wikipedia.org/wiki/Energy_transformation

ALSO, have a look at
http://www-bioc.rice.edu/pblclass/6th%20grade/Matter%20&%20Energy/Energy%20Transformation%20Game.pdf

I hope I’ve helped you,
Angela!!!

admin answers:

Hi Yves, I’m sure there are many websites that can give you better answers so try google too, Yahoo is limited. If you look on ebay you will see lots of permanent magnet 24 volt DC motors for use in scooters, I use one of these, the 250watt model, to power a 12 volt sound system, it can deliver 10 amps at 15 volts. For a wind genny you may have to put gearing between to get the right rpm.
I don’t know if you plan to use a voltage regulator, but if you only intend to use a blocking diode, the best one is a Schottky type, there is a cheap twin 15A schottky from Maplins under £2. I use both 15A diodes in parallel so they won’t get hot & need a heatsink.
The Schottky diode has a voltage drop of just 0.2 volt, I think you put the decimal place wrong
For wind generators the recommended battery charging voltage is 13.8Vmax so 14V with the diode. Car alternators usually produce about 15 volts minus 0.6V for the rectifier, so charge at 14.4 volts. Rutland voltage regulators for wind gennies operate at 13.8volts to stop the battery over-charging.
I don’t know why charging voltages are not the same for a car and a wind genny battery, I’m inclined to think any voltage from 13.8 to 14.4 is ok.
Batteries can deliver a huge current possibly causing burns and starting a fire, so it’s essential to put a fuse in the circuit, right next to the +ve terminal is best.
Good websites are Magnificent Revolution & Cambridge Green Tech

admin answers:

Axial Flux Alternator

The axial flux alternator (sometimes called a generator), is the heart to many diy wind turbine projects. While a small permanent magnet, D.C. Motor, such as the Ametek 30, makes for a very quick and simple project assembly, these motors are becoming very difficult to find and quite expensive. Ebay is loaded with people selling D.C. Motors for home wind turbine projects, that simply will NOT work, due to the extremely high RPMs required to get any usable output. Thus a homemade axial flux alternator may be your best alternative.
What is an Axial Flux Alternator?

A permanent magnet alternator generates power by passing magnets past a group of coils of wire. The magnetic field that surrounds a magnet is call it’s flux. Axial Flux simply means the lines of magnetic flux that past through the coils of wire, travel along the “axis” of the turning motion. The other type of magnetic flux in an alternator is called RADIAL FLUX and it occurs when the flux occurs “around” the magnet. Pictures are worth a thousand words:

Radial Flux

Axial Flux Alternator

In the left picture, the yellow disk is the stator. The two bluish plates rotate, along the horizontal axis, past the stationary stator. In the image to the right, the stator is on the case. The rotor, on the axis, rotates “inside” the stator. This guide by Hugh Piggott describes the process in good detail – How Axial Flux Alternators Work

Overview of the Complete Process – Building an Axial Flux Alternator

In February 2001, Hugh Piggott created a guide for building a permanent magnet generator (PMG) (alternator), after being commissioned by the British government. This guide remains in the public domain and provides an excellent overview of the complete process. You can build a PMG from these plans, though these instructions continue to be improved upon. The PDF document can be downloaded here: PMG Manual

This manual describes how to build a ‘permanent magnet generator’ (PMG). We can
also call it an ‘alternator’, because it generates alternating current (AC). Continued…

admin answers:

The most important thing is to have LOTS and LOTS of money.

If you are a billionaire, that would be a good start.

admin answers:

Hey Michael, Ben is correct about the vertical type turbines. The reason none of the power companies use them, is because they are horribly inefficient. Most of the energy absorbed by the downwind blade is used forcine the upwind blade back into position for the next cycle, and very little is left to produce power. Typically, this type of wind turbine, called a Darrieus Rotor, is about 5 to 8 % efficient, meaning less than 1/15th of the winds power is converted into useable torque, or electricity, and the rest is just wasted churning the blade around in the wind. Horizontal units, and in particular the 2 or 3 blade units generally operate at about 30 to 35 % efficiency, or about 6 times more efficient than a comperably sized Darrieus Rotor. The smaller home sized units like ours have a tail that constantly turns the unit to face the wind regardless of where it is coming from. Older farm type turbines with 12 or 15 blades on them usually worked this way too. That type of turbine, with the multitude of wide flat blades were almost never used for electrcity generation, they were also not very efficient. In most cases, they were used to pump water, and in that way what was needed more than efficiency was low wind start up torque. The large multiple blades worked better for this, but tended to stall out in higher winds. Electrical generating wind turbines work much better in high winds and at high RPM’s, so fewer blades is ideal for this.

The really large utility sized turbines you see that have no tail are either fixed to face one direction where the wind is almost always blowing from, like along the coast, or they have a small anemometer on top that senses the winds direction, and a computer uses a small gear motor to physically turn the unit to face the wind if necessary. These are typical in the midwest. Darrieus Rotors, and their close cousin, the Savonius Rotor, are really neat looking devices, and they are great for small garden pond pumps or outdoor garden lighting, but they are ill equipped to produce enough power to run even a household refrigerator. There is a great article at the American Wind Energy Associations website written by Mick Sagrillo about this, if you want to learn more, check it out. Mick is considered by many in the renewable energy world to be the modern day guru on wind power. Take care Micheal, Rudydoo

admin answers:

Sounds like a cool project… I’d love to try out some ideas too, but haven’t yet.

There’s a boom in “residential wind turbines” and related literature. This link:
http://www.squidoo.com/residentialwindturbine
gives a good summary of what’s commercially available, but about 1/3 down the page is a do-it yourself section with supporting references that might give you a good start.

Same site lists a “Earth4Energy DIY Wind Generator” for around $200. Probably a good start just for learning, then you can scale up as interest & budget allows.

Good luck & be safe!

admin answers:

Solar panels currently being manufactured, have a design life of 20+ years.

Home-size wind turbines have a wide range of design lives. The turbine life is influenced by conditions of use — high winds, ice on the blades, etc.

I would recommend that you purchase your home-scale wind turbine from a seller who offers a guarantee to repair or replace the unit if it fails under normal use. A 5-year or 10-year guarantee period would be ideal.

—————–
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admin answers:

There is no such thing as a device that can generate energy from nothing. So called perpetual machines are announced every few years with great fanfare but they always turn out to be frauds (or in rare cases honest but careless mistakes).

You can generate electricity from a ‘free’ source like sunlight or tides or wind or waves or geothermal heat, but you can’t generate electricity from nothing. To do so violates one of the fundamental laws of physics, the conservation of mass and energy.

Very convincing sales copy can make you believe in such devices. For instance, I remember reading a few years back about a ‘Genesis’ energy generation system that used a catalyst to split water into hydrogen and oxygen while using just a tiny bit of energy; then the hydrogen and oxygen were used to generate electricity through a fuel cell, and almost all the electricity produced was available, only a tiny bit was needed to split more water. This is malarkey and anyone with some basic physics knowledge will know it’s impossible, but it didn’t stop the company from claiming it had over 100 reputable scientists on its staff or board of directors. A good way to get some start-up money – sell some stocks to uninformed investors, then cash out before the house of cards collapses.

admin answers:

Excellent question from someone who obviously has a functional grasp of economics. You didn’t vote Obama, did you? (Oh you hater, you! You must be racist, too!)

If we would have just allowed the ill-managed lenders to get into real trouble and not interfere with them in the form of our ridiculous bail outs, the recession would have been far shallower that it is now going to turn out to be. It’s like getting the flu. Don’t medicate yourself – just get the nasty fever, feel like crap, then get over it.

Now the car manufacturers will be on the dole. We will reward their stupid management practices and ludicrous wages with free money. I say we let them take a dump. Like there’s not a rich investment group out there who would not come swooping in with bucket loads of money to buy Ford at fire sale prices? You’d have the UAW under control again, wages back to where reality resides, and a more competitive product too.

And if a car factory flat out closes, then the goverment can do something actually beneficial for green needs and turn these car factories into wind generator factories, solar panel manufacturers, etc. You want energy independence? Start there!

This bailing everyone out because things didn’t work is childish. I cannot believe how stupid this country has become. It’s like a parent of a teen who just keeps buying his idiot kid a new car every time he wraps it around another tree. Instead of making the kid ride a bike or bus, he just enables him to continue in the bad decision making by throwing more money at the problem.

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May the New Year usher in loads of luck and happiness to you! Unlike Gulf countries, where they issue 2-year renewable visas, the European countries issue employment visas which are considerably longer. Who knows, if they like you and your work, they may even offer you citizenship (like the US) after spending a few years in Denmark.

admin answers:

Most tread mills as well as other equipment employs private labeled motors. These motors are manufactured by a motor manufacturer and have the treadmills manufacturer part number placed on them. This is done so that you have to pay the top dollar for a replacement motor from the treadmill company instead of getting one off the open market for a tenth of the price.
I doubt the manufacturer will even tell you much about these motors since the less you know about their motors the more likely you are to buy one from them and they make a handsome profit.
If you can get these treadmills cheap enough you can part them out and sell the parts on Ebay and make a handsome profit. You can have your motors for free!

admin answers:

To make an electrical generator, you need to have a length of wound copper wire rotating inside a magnetic field (refer to elementary physics).

Gasoline/diesel/etc. Generators run basically like your car’s engine, but instead of turning wheels, it uses the motion to rotate the wire inside the magnetic field, producing electricity. Remember, energy can’t be created or destroyed. The chemical potential energy in your combustible fuel is being converted to kinetic energy, which is being converted into electrical energy.

A wind turbine is more “free” in that you don’t have to go out and buy drums of oil to make your electricity. But it works on the same principle, but in this case, it’s the turbine blades catching the wind that spins the copper loop, creating electricity.

As far as your batteries go, you may be able to store it there, but to charge any battery, from AA to car, you need the correct circuit and voltage, or nothing will happen. So you probably can’t use your batteries. But if you can, all that you an do is store the potential energy there, and use it at a later time.

But if you just want to play with making a generator, try this:

First, you need to choose the energy source that you want to convert into electricity. You can use a stationary bicycle, a water wheel, wind turbine, a bored child willing to do some menial work on a set of gears, or virtually anything else with a rotating axle. You do have to choose the source, because as I said – you can’t get energy from nothing.

Take that copper wire that I talked about, and make that loop that I also talked about, but leave two ends free (you need that to form the electric circuit). The larger the number of turns in the loop, the more electricity you can generate for the same amount of rotation. Kind of like an electric pulley system, to use a bad analogy.

Take your loop, and connect it to your energy source. You need to be able to rotate the loop end-over-end, without twisting the two connecting wires about each other, because if they do, you’ll get a short circuit, and boom, it’s done. One way to successfully accomplish this is to connect one wire to the rotating axle and the other wire to a conducting “brush” that maintains contact with a second conductor.

Make sure that you’ve sufficiently supported the loop so that it’s out of the way of any moving parts of the energy source (such as your legs and the pedals if you pay a seven year old to ride a bicycle that never goes anywhere – give them one of those hand-held video games, they’ll never notice). To make sure that you get this right, you may need to reinforce your loop with plastic or another light (but sturdy) material.

Grab some magnets (permanent magnets), and arrange them around the loop so that the loop can rotate freely between them. Take care to ensure that you arrange the magnets to maximize the field strength. One good and simple method is to make the south end of one magnet face the north end of another.

Stick the two conductors on your energy source to a battery, circuit, chainsaw, whatever it is that you want to drive. Again, you need to keep your wires separate to avoid a short circuit, so you’ll need to use some kind of brush mechanism again, or whatever more clever thing that you can come up with that I haven’t considered.

Poke the kid and get him to start peddling, or release your turbine to the wind, whatever you want. The amount of energy that you get from your turbine will depend on the efficiency of its construction, materials used, and how much mechanical energy us put in to drive it and spin the turbine itself (a faster peddling kid will give you more electricity than a slower one).

Run with it. A home-built turbine is unlikely to provide your house with any really useful power, unless you’ve really taken some time, money, and thought into it (which is possible). But you might run some simple things from your standard knock-off generator, such as perhaps basement lighting, that kind of thing.

admin answers:

You will not be able to manufacture solar power cells in your own home.

See this link for solar cells.

Http://www.google.com/search?sourceid=navclient&ie=UTF-8&rlz=1T4GGLR_enGB241GB243&q=solar+cells

That is like trying to manufacture a CPU in your own home, you cannot make the semi conductors.
You need a clean factory and millions of pounds worth of equipment for that.

See this link for do it yourself wind turbine.

Http://www.scoraigwind.com/axialplans/index.htm

and this might help

http://www.google.com/search?sourceid=navclient&aq=t&ie=UTF-8&rlz=1T4GGLR_enGB241GB243&q=wind+generatore%2e

admin answers:

I still think that people are so ignorant when it comes to electric
cars they only think of one way to make them run and that’s batteries.
Its like you lost your mind and have no innovated ability to think of
more than one source of power. Every year people spend millions of
dollars to go to the gym they hop on bikes and treadmills and
ellipticals and pedal away for hours and then pay their gym for it.
Then they hop in their car and pay gas to ride home. The answer was
right in front of your face when you watched the Flintstones as a kid.
Do remember the car on the Flintstones. Hmm, not so stupid now is it?
Do remember how boats got across the ocean? Have you ever held your
hand outside the window and felt the power of the wind resistance
against your hand? The faster you went the more force you felt
pushing against your hand right. Have you noticed that the quality of
solar powered panel technology has increased tremendously in the last
twenty years. The quality of of generators and electric engines is
also there. Our government has manged to keep all of this from you
because they believe you are all ignorant and set in your ways. They
could make cars that run with out wheels but our government would
never allow it to be mass produced. If you had the means to build a
car that had electric generators that produced electricity via wind
power, Human power “recumbent bike pedals”, Solar power and maybe some
lithium batteries you would have a car that would go thousands of
miles without ever needing to be charged or fueled.
But will this ever be allowed. Its amazing that china and japan have
magnetic trains that never touch the track they actually float be we
never use that technology. Its no wonder they do not put any emphasis
on science. They want us to remain ignorant and in the dark. They want
you to keep forking all the billions of dollars in tax revenue. They
want the price of fuel to sky rocket because most of them own the
stock. The only way to overcome the greed is to take matters into our
own hands and break the grip of Fuel mongrels from ourselves by building
our own fuel free cars. I just showed you the way. Now all you have
to do is ” Just Do It!”
My method overcomes the perpetual energy law crap because you get extra energy, Via Human power and solar power! The sun is the source of unlimited free power and so what if you have to pedal your car for it to go long distances. I just saved you from getting fat as hell.
Source(s):
My brain!

admin answers:

I work primarily on Boeing products, so my answer is from that perspective.

Short answer: GTCP331

Commercial aircraft use an Auxiliary Power Unit (APU) that provides electrical power and pneumatic pressure. The electrical power can then be used to run the electrical pumps (ACMPs)to pressurize the hydraulic system.

There are also Ram Air Turbines (RATs) that deploy directly into the air stream. This “RAT” looks like a trolling motor you would see on a boat, the wind spins the propellers and generates hydraulic pressure. If you have pneumatics, you can use the Air Driven Pump (ADP) to get hydraulic pressure. If you have hydraulics, but no electric, you can use the Hydraulic Motor Generator (HMG) to get electrical power.

There are backup systems all over aircraft these days. Most of which are activated automatically in the event of a failure of another system. The crew may only get an annunciator light to inform them that a backup system has been activated. No further action necessary.

admin answers:

A wind turbine is basically an electric turbine on top of a stand and with blades attached.

I would recommend you salvage a motor from a small electrical device. If you can find a small fan, then you only need to put it on a stand of some sort to make a wind turbine because it all ready has a turbine and blades.

An electric generator is just an electric motor in reverse. So any device that has an electric motor can potentially be used to make a turbine.

admin answers:

It depends on a number of factors, including average wind speed for your area, and the turbine design.
Fill in your parameters here: http://www.reuk.co.uk/Calculate-kWh-Generated-by-Wind-Turbine.htm and it will give you an energy rating in kW-hr