Wind Power For Homes

Donna asks…

What is good place to find information on Home wind power ?

I would need find good place to get information on home wind power,

thnx

Windmill Farms answers:

You can find some pretty good articles about home wind power from http://home-windpower.info

Joseph asks…

What is the most cost-efficient way to bring green electricity into my home?

I would like to invest in wiring my home with green power. I don’t have any expertise in this area. How might I incorporate solar or wind power into my home grid effectively?

Windmill Farms answers:

The idea is good, but I hope you’ve got a LOT of money!

Steven asks…

What would need to be done to power a home using an off grid wind turbine? Prices?

I live in Ontario and am wondering what my options are for using wind energy to power my home and what i would need to do?

Windmill Farms answers:

Depends on if you also maintain a power grid connection, and other factors.

Without the grid connection, you need a huge and very expensive, bank of batteries, hundreds of them. You have to have the capacity to handle days (or weeks) when the wind is not blowing. If you have a grid connection, you can sell power to the power company and buy from them when there is no wind, you buy from them. If you have enough capacity, you have a net gain, and are using the power company as a storage facility.

Go through the numbers. If your power consumption averages 1.2 kW, the US national average, for one day capacity, you need 1.2 kW x 24 hours = 30 kW-hours. That costs US$3 from the power company. But for batteries, you would need 30 large lead acid deep discharge lead acid batteries, at about $300 each, total $10k. For many days, multiply that up. Four days, that is $40k worth of batteries.

Bottom line, you need to know your average power consumption. And you need how many hours a week you get wind in the range the wind turbine can handle.

For example, if the turbine is turning average 6 hours a day, and your average usage is 1.2 kW, then you need a capacity of 4 x 1.2 kW = 5 kW. Plus extra for losses in batteries and inverters, probably 7 kW overall.

Sharon asks…

How do you make wind power generators?

I want to make a wind power generator so that I can put it on the roof of my home.

Has anybody done this? They seem to be fairly popular now

Windmill Farms answers:

A generator is a generator. It doesnt matter if you have an ox pulling the sucker around. You just need gears to change the direction of your mechanical energy. Maybe your question is how do you make a generator?

Carol asks…

Does anyone know of grant programs to convert my older home to alternative energy?

I am a substitute teacher on a limited income and we want to convert to solar and wind power if possible. The home was built in the 1920′s. Please only serious answers!

Windmill Farms answers:

The first step is to weatherize (i nsulate ) your home there are grants in most cities to do this . Also there are renuable energy grants and tax credits for energy effecient heating , cooling & insulation through the end of 2007.
One easy conversion is to install a solar water heater.
Also consider passive solar space heating.

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Wind Energy Conversion System

Ruth asks…

What are the alternative forms of energy?

I have a paper to write and I’m very confused

Windmill Farms answers:

Tidal energy:

We can take advantage of this rise/fall phenomenon by harnessing renewable energy from it. By installing barrages (small damns), we can generate electricity from passing water by using turbines. Because the rise/fall phenomenon is always there, tidal power is a clean, non-polluting, renewable source of energy.

Solar energy:

Energy from the sun. Parabolic dish and Stirling engine system concentrates sunlight to produce useful solar power.

Wind power:

Wind power is the conversion of wind energy into a useful form of energy, such as using wind turbines to make electricity, wind mills for mechanical power, wind pumps for pumping water or drainage, or sails to propel ships.

Hydroelectric energy:

Hydroelectricity is electricity generated by hydropower, i.e., the production of power through use of the gravitational force of falling or flowing water. It is the most widely used form of renewable energy. Once a hydroelectric complex is constructed, the project produces no direct waste, and has a considerably lower output level of the greenhouse gas carbon dioxide (CO2) than fossil fuel powered energy plants. Worldwide, an installed capacity of 777 GWe supplied 2998 TWh of hydroelectricity in 2006. This was approximately 20% of the world’s electricity, and accounted for about 88% of electricity from renewable sources.

Laura asks…

Doing a trailer conversion project and was wondering if solar panels could power it soley?

Im converting a 6×10′ trailer into a hangout room and was wondering if I installed a 500watt solar panel system on top, would it be able to power the room all day say about 12-18 hours at most. Figure I will only be running about 350 watts during the day mostly but was wondering if I would be able to store a couple hours each day in a battery?How many watts of solar power would I need to make this managable? Would it help to incorporate a 600watt wind turbine? I want the trailer not to need attachments and be 100% self-sustained If I take it out hunting or camping.

Windmill Farms answers:

The electric company measures energy in kilowatt hours. One kilowatt hour is 1,000 watt hours, and a watt hour is the energy used by a 1 watt device running for 1 hour.
So you need to keep track (some how) of how many watt hours a day you use, then calculate how many watt hours of total energy the 500 watt solar panel will make. Be aware that the rating of a solar panel is the maximum it can make in full, direct sunlight. When the Sun is lower in the sky it makes less, and on cloudy days it makes a lot less. So you need to know the average daily power a panel can make for your particular area taking into account your latitude and percentage of clear days. There ware web sites to help with that.

And it would help to get a wind generator too, since the wind can blow at night sometimes.

Ken asks…

Anybody Know Any Facts On Energy?

Does Anyone Have Any Facts On Energy ?
Thanks

Windmill Farms answers:

Too many facts !! I will give some of them …
–Energy is the ability to do work. It comes in different forms thermal (heat), radiant (light), mechanical, electrical, chemical, and nuclear energy. Energy is in everything.

–Matter can be turned into energy, and energy into matter. One of Einstein’s great insights was to realize that matter and energy are really different forms of the same thing. The deep connection Einstein discovered between energy and mass is expressed in the equation E=mc2. (Here E represents energy, m represents mass, and c2 is the square of the speed of light)

–According to law of conservation of energy, energy can neither be created (produced) nor destroyed itself. It can only be transformed. So, whenever one measures the total energy of a system of particles whose interactions do not depend explicitly on time, it is found that the total energy of the system always remains constant.

–There are two types of energy – renewable and nonrenewable.
–Renewable energy sources are solar energy, wind energy, geothermal energy, hydropower, bioenergy (bioethanol, biodiesel), ocean energy (tidal power, wave energy, Ocean Thermal Energy Conversion -OTEC). Renewable energy sources are often marked as sustainable energy sources.
–Non-renewable energy sources are fossil fuels (oil, coal, natural gas) and nuclear energy. Fossil fuels are the main energy source in today’s world. Non-renewable energy sources are often marked as non-sustainable energy sources.

–Sustainable energy is the provision of energy such that it meets the needs of the present without compromising the ability of future generations to meet their needs. Sustainable Energy has two key components: renewable energy and energy efficiency.

– dark energy is a hypothetical exotic form of energy that permeates all of space and tends to increase the rate of expansion of the universe.

–Solar Energy is better for the environment than traditional forms of energy.
–The energy output of a 1 KW solar energy unit is roughly equivalent to the burning of 170 pounds of coal and 300 pounds of carbon dioxide being released into the atmosphere.
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Richard asks…

Can “free energy” (perpetual motion) be achieved through buoyancy?

The easy answer is “no, because of the law of conservation of energy“, but I would still like to scientifically discuss the following idea:

Imagine an underwater “ferris wheel” inside a large water tank such that there are upside-down cups on the outside perimeter of the wheel. At the bottom of the water tank, there is a small hole through which air is pumped, so that it fills the cups with air as they pass over it. This results in circular motion of the wheel as the cups are filled as they pass over the hole, and emptied as they reach the water’s surface.

What I am wondering is how much energy would be required to get air bubbles through a hole in the bottom of the aquarium into the cups, and how much energy could be produced by the rotation of the wheel. I would be interested in seeing actual calculations.

I do not have the background in physics necessary to answer those questions, but it seems to me that it would take very little energy to pump the air through.
The wheel is connected to some kind of electrical generator, which is used to power the air pump. The real question is whether enough power can be extracted from the wheel’s rotation to power the air pump.

Windmill Farms answers:

First of all, this is not free energy. You have to pump air into it. The energy required to pump the air depends, among other things, on the resistance to the air motion. You also have to consider the resistance to the cups when they are moving down.

Now if all the cups have air, then you reach a point where the clockwise moments = counter clockwise moments. With the resistance, the ferris wheel will eventually reach a state of zero motion.

Even if there is no resistance (purely theoretical), then the wheel will attain some constant angular velocity, and will thus have a certain amount of kinetic energy. That’s still fine, UNTIL YOU START EXTRACTING ENERGY FROM THE SYSTEM. If you want to put that energy to some useful purpose, then eventually you’ll extract all the kinetic energy it possesses. So it will give you some energy for a short period of time, and you will find that this energy is equal to or less than the energy you put into it via the air.

RE: the additional details you posted.
Look at it this way. If you input 5 J of energy into a system (via the generator). At best the system will give you 5 J of output. In reality it will be less. So if you take all of this 5 J and re input it to the generator, then you have nothing left to output. And in reality there are losses during energy conversion.
These problems work best when the rotation is caused by some natural means e.g. Flowing water from a river or waterfall, or wind etc. That way you don’t have to provide the input. Nature does that for you.

You might be interested in the article below.

Mary asks…

What Are All The Energy Systems Used In Society, And How Do They Produce Energy?

e.g. nuclear energy, solar, coal, hydro etc.

Windmill Farms answers:

Nuclear, Coal, Natural Gas, and Geothermal operate under the same principles: Boil water, generate steam, drive a turbine, produce electricity.

Hydro-drive a turbine.
Wind-drive a turbine.

Solar–Two types, electro-voltaic conversion of sunlight to energy or focus the energy into a collector and boil water to generate steam to drive a turbine.

There are different types of nuclear reactors based on cooling-water cooled, sodium/metal cooled, molten salt and gas cooled reactors. Then there are different types of reactors on how they generate heat–fissile and decay.

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Is Wind Power Really Green

Susan asks…

Why we should use Wind Turbines?

Hey everyone. I have a science project due tomorrow and I can’t find ay site that tells me why we should use wind turbines to create electricity. I was just wondering if someone could give me a descriptive answer on why we should use wind turbines or could someone give me a site that does. Thank you!

Windmill Farms answers:

ADVANTAGES AND DISADVANTAGES OF WIND POWER

V. Ryan © 2005

ADVANTAGES OF WIND POWER:

1. The wind is free and with modern technology it can be captured efficiently.
2. Once the wind turbine is built the energy it produces does not cause green house gases or other pollutants.
3. Although wind turbines can be very tall each takes up only a small plot of land. This means that the land below can still be used. This is especially the case in agricultural areas as farming can still continue.
4. Many people find wind farms an interesting feature of the landscape.
5. Remote areas that are not connected to the electricity power grid can use wind turbines to produce their own supply.
6. Wind turbines have a role to play in both the developed and third world.
7. Wind turbines are available in a range of sizes which means a vast range of people and businesses can use them. Single households to small towns and villages can make good use of range of wind turbines available today.

DISADVANTAGES OF WIND POWER:

1. The strength of the wind is not constant and it varies from zero to storm force. This means that wind turbines do not produce the same amount of electricity all the time. There will be times when they produce no electricity at all.
2. Many people feel that the countryside should be left untouched, without these large structures being built. The landscape should left in its natural form for everyone to enjoy.
3. Wind turbines are noisy. Each one can generate the same level of noise as a family car travelling at 70 mph.
4. Many people see large wind turbines as unsightly structures and not pleasant or interesting to look at. They disfigure the countryside and are generally ugly.
5. When wind turbines are being manufactured some pollution is produced. Therefore wind power does produce some pollution.
6. Large wind farms are needed to provide entire communities with enough electricity. For example, the largest single turbine available today can only provide enough electricity for 475 homes, when running at full capacity. How many would be needed for a town of 100 000 people?

QED

Sharon asks…

Will/could a EMP pulse (destroy) green tech, solar cells arrays, wind turbines, geothermal power stations…?

Thanks for the “Wow” shanghaiduck !

With the total CDP dollars being pushed into Green Tech and with the USA’s goal of producing 20% of all domestic power generation using Green Tech. I am seeing parts of the Green Tech power generation grid having some very soft spots that are venerable to exploitations.

Big time “O” yes! Solid State electronics that are not hardened, will be at EOL. Although most of today’s IC’s PLCC’s… are/have for years been incorporating “some”on chip RF and power spike protection, but no were near the total RF dBm protection needs, of tuned EMP hardware and to the tuned altitude of the event.

IE: Solar Cells, Will the EMP destroy the solar silicon wafer, it (the wafer) being tuned to use the photonic spectrum?

IE: Wind turbines, Will the EMP destroy the motor armacher windings that are 50…150 feet up in the air?

A little planning now could……

Regards
Low_Voltage

Windmill Farms answers:

Wow, someone actually asked an interesting question!

The best answer I could find was that yes, anything that depended on solid state electronics [which is practially everything] would be toast — although it is possible to build shielding that will protect the equipment.

“Solid state electronics” just means “circuits or devices built entirely from solid materials and in which the electrons, or other charge carriers, are confined entirely within the solid material.” [1]

In other words, circuit boards. Any thing that depends on circuit boards to work — and anything connected to them by cables or wires — gets toasted.

But a key fact abogreen tech power [especially right now] is that since these power sources are usually not on grids, it would be be easier to recover green tech power sources from the disruption.

According to the magazine “Military and Aerospace Electronics”, a key aspect of EMP pulse danger has to do with the fact that the loss of grids and communication networks would be extremely difficult to recover from. Not only would the individual system be destroyed, but so would the infrastructure they need to interact … Making it far more difficult to restore the system.

Many systems like bank networks and the safety systems on oil rigs and nuclear reactors depend on their ability to communicate and interact with other systems.

They suggest green tech power would be a good system to protect against EMP pulses because replacement parts could be stored in EMP – protected housing. And since the system is less dependent on interaction with other systems, the system could be restored more quickly.

Donald asks…

How/Does WIND POWER Fit Hawaii? *HELP PLS!?

Hi xD

I’m wondering how or does wind power fit the state of Hawaii.

Please describe very much.

Please & Thanks (:

Windmill Farms answers:

Hawaii, being islands on a vast ocean, would be an ideal place to have wind turbines. The wind moves, unrestricted, over a long distance and is probably omnipresent on the islands. And even when the air is calm, offshore, there must be a constant sea breeze generated by the difference of temperature between the land and the sea.

A sea breeze blows onshore during the day and offshore during the night. As the sun heats the land, the air rises, giving place to a lower pressure that is then filled by air from the sea. At night, when the sea water is warmer than the land, the opposite phenomenon occurs.

I have never been to Hawaii but I have seen similar phenomenon along all the coasts I have sailed for nearly half a century (Yes, I am that old! :-) I have also seen in on mid-ocean islands like the Canary and the Cape Verde islands.

Furthermore, the mountains of Hawaii lift the wind and increase it as it passes their summits. I would say that windmills on the top of the Hawaiian mountains won’t look really nice for tourism but then; a “green” profile may also profit because environmentalist consideration is becoming more and more politically correct and … That’s a good thing!

Linda asks…

son is doing s/f project w/Savonius wind turbine, how do you convert the volts it puts out ot kilowats?

He is wanting to compare the cost of wind turbine cost to the cost we pay for electricity. Any ideas? We are building a wind turbine but not sure of how to test the cost.

Windmill Farms answers:

I am a mechanical engineering junior at Virginia Tech. I did a lot of work with off-grid green housing planning last semester.

Basically, everything has to be just right for a wind turbine to be feasible. There are several issues that you will have to deal with.

1. The wind doesn’t blow all the time. You need to have a battery bank to store excess energy when the wind is blowing so you have electricity all the time. Battery banks need voltage controllers and chargers, inverters, etc. It’s a lot to invest in.

2. The wind doesn’t blow all the time. You can’t size the turbine to provide just equal the amount of power you plan on consuming. You need it to provide an excess so you have something to put in your battery bank. How much bigger than what you intend on using is determined by how often you expect the turbine to be producing useful power.

3. The wind might not blow (effectively) at all. You need to go over years of weather data (try wunderground.com), looking at windspeeds for your area, to see if the wind will even blow enough in your area to justify the turbine.

4. Windspeeds are measured at a height of 30 feet. The speed closer to the ground is significantly slower. You need to have a mast for your turbine tall enough to receive the windspeed you think you have.

These are just some considerations you need to think of once you have figured how much power you will be using. The bulk of your energy will be spent on heating and/or cooling your home. If you can find a way to use other alternatives to electricity (wood heat, propane stoves, etc.), it will let you reduce the size (read: cost) of your turbine a lot.

If you want to compare the cost of the power output to what you pay for electricity, well, the power produced by wind is free. What you have to figure is the cost of the power system you’re building. These costs don’t even begin to become competitive with commercial power until you average their costs over 10 to 15 years.

The costs you need to consider include purchasing the equipment, installation, and maintenance. You wouldn’t expect a car to run 10 years maintenance free, and it doesn’t turn 24/7. It’s not as though there are any wind turbine shops you could take it to. You’d need a specialist to come in.

As far as actually calculating the power outputted by the turbine, as many others have noted, you need to know the voltage and current output of the turbine. Multiplying the two (Volts * Amps) gives you the power in Watts. You need to remember, though, that the charging controller that regulates your battery bank and the inverter you use to convert from DC to AC will both draw a non-trivial amount of power. There will be losses, and how big of a percentage those are depend on how large your system is. A 500W drain is a lot bigger for a 10kW system than for a 100kW system.

The only reason that I’m giving you this much information is that you seem unsure, and yet you posted that you are or are planning on building a wind turbine. I would very highly suggest hiring an engineer to do these calculations for you, because there is a LOT of planning and work that needs to go into correctly sizing a wind turbine.

If you’re going to buy a wind turbine, a battery bank, voltage regulators, inverters, pay for maintenance and installation, then you should spend the money on an engineer to make sure you’re getting the right stuff. If you size your equipment too small, you’ll have blackouts. If you size it too big then you’re overpaying for startup costs.

Lisa asks…

how the green power(electric power by wind) is working?

Windmill Farms answers:

This link shows the development of the use of wind power: link one
The second one gives a good overview about the technic used.

(Basically it works like the dynamo on your bicycle but the wind is turning the wheel.)

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Uses Of Wind Energy In Everyday Life

Helen asks…

what are some ways that solar energy, wind energy and food energy are used in our everyday lives at home?

Windmill Farms answers:

There are their uses………………….
1. We are able to see things or world around us only due to visible light of sun
2. Life exists on earth due to optimum temperature of 10-40 degree which is only possible due to sun…………..we also use this heat energy of sun to dry our clothes ,take sun bath and to feel better in winters.
3. Wind energy helps to produce electricity in remote areas through wind mills…….,also responsible for rain and season formation,,,,,,, moreover, it has also a entertaining side as – flying kites is only possible due to wind………..
4.food keeps us alive ………..what can i say more
Hope u have met ur answer…………….

Betty asks…

How is solar energy converted to be used in everyday lives (Powerplants?, Turbines?) ?

last question for my science hw asdfghjkl;’

Windmill Farms answers:

Solar energy in the form of photons of light can be converted directly to dc electricity using photovoltaic panels.

The same light can be converted to heating water or air using a solar heater.

A solar cooker concentrates the sun’s rays via a parabolic reflector or fresnel lens to cook food. A very large concentrating array can melt metal or generate steam to run a steam engine.

The sun’s power is responsible for wind and rain. So indirectly the sun is the motive power for hydroelectric and wind turbines.

- .–

Susan asks…

examples of energy conversions in everyday life?

like use in fan, wind mill

Windmill Farms answers:

Light bulbs, electrical energy to light and heat
batteries, chemical energy to electrical

Jenny asks…

list some energy recorces?

list all energy sources and divid them in two catagories, renewable and nonrenewable
2)choose a renewable and a nonrenewable source and right the goods and bads of each
3)why are renewable energy sources currently being used considered to be unable to meet our total energy needs?
4)think about all of the situations in which you use energy in your everyday life. what is the source of energy in each case? if you dont know , how could you find out?
PLEase answer what you can. just 1 is good….thank you :))

Windmill Farms answers:

That looks like somebody’s homework, but since I am addicted to this topic:
Renewable sources: wind, solar, biomass, geothermal, marine current, rivers
Non-renewable: petroleum, natural gas, nuclear

A renewable source: rivers. Positives: already quite used, very high energy potential, no emissions, technology is already quite advanced, the idea of a hydro power plant is very simple.

Negatives: it requires the flooding of a certain area before the dam, as the reservoir, some fish are killed in the turbines

A non-renewable source: nuclear
positives: very efficient, produces a lot of energy for a little bit of material.
Negatives: dangerous (proved by the Chernobyl accident), produces nuclear waste which can not be disposed of very safely, uses a non-renewable energy source a.k.a. We will run out of it at one point in time.

3. Because they are still quite capital intensive, and it is not true that they can`t meet our needs, we just need a lot of these new types of energy and we probably need more efficient appliances.

Maria asks…

Is there a way that a wind mill can generate enough electricity to turn the lights on in a house?

I am writing an essay for school and it has to be on everyday life and how you can use alternative fossil fuels to do the same things. So if they are other things you can think of that i can use (wind energy, solar energy, hydroelectric energy, etc), to put in my essay that would be extremely helpful. Thanks!

Windmill Farms answers:

A good way to discuss it would be to think about using Alternative energy to supplement fossil fuel energy. Aside from hydropower, alternative energy is not consistent enough to be used on a small scale to power a home (like if clouds cover your solar panels, you’re screwed).

If you used all kinds of alternative energy and then supplemented with a generator, then you’d have a really good, and consistent source of energy.

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Wind Energy Facts

Jenny asks…

Facts About Wind Energy?

Windmill Farms answers:

Hey Houston, kind of a broad question, but I’ll try to help. Wind energy has been in use for a little over 1000 years on earth. In Europe, it was originally used to grind grain and pump water. In the Netherlands, the rich fertile soil was covered by water much of the year, and people figured out if they could drain the small amount that kept collecting there, they would have access to fantastic agriculture. Today the Netherlands is home of probably the largest number of active wind turbines per person. They have an offshore farm with 26 wind turbines powering part of their grid. They still employ pumps to maintain their below sea level lifestyle, but the pumps are primarily fed electricity from the wind turbines

New turbines today are larger and more efficient than just 10 years ago, and that is what has brought them from the back yard farmers field to the mainstream. There are literally dozens of wind farms in the US alone today in operation, and more being built, because they are economically feasible. We live in a home that is powered by the wind and sun, has been for 10 years now. The utility companies have figured out what some of us have known all along. Once you build a wind turbine, it looks really good on the balance sheet, and it never matters what happens to the price of oil after it goes up. Wind power is doubling about every 3 years right now, so by 2020, it should make up about 25% of our global utility power. It’s variability is not nearly the issue it has been claimed to be, because the wind is always blowing someplace, by installing wind farms in the best locations and connecting all of them to the same grid, we can have a fairly constant supply, and a predictable one looking ahead a day or two. If there is one thing you can learn from this forum by reading through your answers and others on the subject, it’s that there is a lot of misinformation about renewable energy. I’m always amazed how people are willing to put in their opinion on subjects like wind and solar, but have never actually owned or operated a wind turbine or solar panel.

If you really want good information, I would go to some of the non profit groups and government websites on the subject instead of asking hacks like me online. I will list some places below that are worth looking into. Good luck Houston, and take care, Rudydoo

Steven asks…

facts on wind energy?

please help asap
i need some interesting facts on wind Energy
thanks

Windmill Farms answers:

The ideal conditions for wind power at your home is a minimum of an acre of property and at least 10 feet higher than anything within 300 feet, such as trees and power lines.

Here are the pros of wind energy, taken from Natural Home magazine. Wind energy can lower electricity bills by 50-90 percent. With rising natural gas prices, wind power is cheaper than conventional because its prices remain fixed. Xcel Energy reports that in fall 2005—when natural gas prices soared—homes using 100 percent Windsource energy saved an average of $10 per month over a similar home using conventional power. Federal incentives are available, www.dsireusa.org

Natural Home magazine says that the disadvantages are cost, location and zoning regulations. There are no federal tax credits for homes with wind systems. Because the wind is unpredictable, rooftop turbines are less productive than towers. The cost is extreme, $35,000 to $40,000 depending on the location.
Here is an informative article from Natural Home magazine http://www.naturalhomemagazine.com/Inspiration/2006-07-01/NUTS–BOLTS.aspx

Lizzie asks…

Wind energy question?

Sorry if this is a stupid question I don’t exactly know how wind energy works, but if I’m wrong correct me.

The faster wind turbines turn, the more electricity right? I think so, so if you put a wind turbine out where there’s a decent amount of wind, and hook it up to a giant fan in front of it, since the fan is powered by the wind turbine and is powering the wind turbine with itself, would that make infinite energy? Would that work? I had thought of that a while ago, but I don’t exactly know hoe wind energy works, so I’m probably wrong. It can’t be that simple can it?

Windmill Farms answers:

Wind turbines are about 30% efficient; 30% of the wind hitting them is turned into electricity. IF 100% of the wind created by the fan were to hit the windmill, only 30% would be turned back into power to power the fan. Add to that the fact that the fan isn’t 100% efficient and much of the wind created by it would blow outside the wind turbine blades and you’d probably get 10% of the energy back at most.

Mandy asks…

Please Provide 5 facts about wind energy in Ohio?

Visit this website: http://ohiowind.org/
The website above was told to use for the assignment. Although the problem is I cannot seem to find anything, if you could give me a hand that would be great and well appreciated.

Windmill Farms answers:

1) In 2006 wind generated $250 million in revenue, creating a total of 1700 direct and indirect jobs in Ohio.
2) Lake Erie is uniquely position to serve the emerging Great Lakes offshore wind market.
3) When it comes to wind Ohio has the best supply chain in the country.
4) A 224 kW turbine provides power to the Great Lakes Science Center in Cleveland, Ohio.
5) Four 1.8 MW turbines in Bowling Green compromise Ohio’s first utility wind farm.

I have a blog about renewable energy and green living if you are interested you are welcome to visit.
Www.renewableenergytechinfo.com

George asks…

Facts on Solar Energy, Wind Energy, and Hydropower?

Please? Best answer WILL be rewarded.
NOT on my homework. Its for girl scouts,thankyou very much. on google i cant find anything, otherwise i wouldn’t be asking here smart one. Durr.
Can anyone please give me a REAL answer?

Windmill Farms answers:

Hydro power is the best for baseload power- can be used 98% of the time and is easy to increase/decrease the amount of power produced when needed. Most of the prime hydro sites have already been harnessed though.
Wind energy is much better now than the bird chopper machines of the 1980′s. 1000 times as many birds are killed each year by pet cats than windmills in the US. The very best locations for wind power (near power lines, places that need lots of electricity and very steady winds) have already been built up. The locations left are missing at least one of the above criteria that make wind a cheap power source.
Solar energy is good for many locations. When you think of solar, DON’t just think of making electricity- that is only 10-22% efficient and very expensive. Much better and cheaper is lighting (windows, skylights), water heating, heat storage for overnight use in objects like walls and floors and finally making electricity.

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Renewable Energy

Michael asks…

What is renewable energy ?

What is renewable energy and how does it works?

Windmill Farms answers:

Renewable energy is sustainable energy that comes from the natural environment. Certain sources of energy are “renewable” as they are maintained or replaced by nature. Renewable energy is obtained from sources that are essentially inexhaustible, unlike fossil fuels, of which there is a finite supply and cannot be replenished.

Renewable sources of energy include solar, wind, water, biomass, wood, waste, geothermal, wind, photo voltaic, and solar thermal energy. Non renewable energy sources include coal, oil and natural gas.

Here i would like to give you guys detail about Geothermal Renewal energy
Geothermal energy refers to the different types of thermal energy stored within the earth.It makes use of the low-temperature heat (10–20°C) found at relatively shallow depths within the earth’s crust. This heat in the ground remains relatively constant all year.
Heat pumps use this heat to produce hot water at a temperature of 40-50°C, ideal for low-temperature heating systems such as under-floor systems and radiant panels.Hence it protect the environment also as well as help in saving of energy, time and money.
For detail visit:
http://www.egshpa.com/

Chris asks…

What are renewable & non- renewable energy resources?

What are renewable energy resources? Give three examples
What are non-renewable energy resources? Give two examples
btw this is out of curiosity i never really listened in science… =]

Windmill Farms answers:

Renewable energy is energy generated from natural resources—such as sunlight[2], wind, rain, tides and geothermal heat—which are renewable (naturally replenished). Renewable energy technologies include solar power, wind power, hydroelectricity, micro hydro, biomass and biofuels.

Http://www.eia.doe.gov/kids/energyfacts/sources/whatsenergy.html

Non-renewable energy is energy taken from “finite resources that will eventually dwindle, becoming too expensive or too environmentally damaging to retrieve”, [1] as opposed to renewable energy sources, which “are naturally replenished in a relatively short period of time.” [2]

Fossil fuels:
Coal exists as a mined solid.
Petroleum is a liquid, and forms the basis for heating oil, diesel fuel, and gasoline.
Natural gas is commonly also referred to just as gas. It is mostly methane, and most of the additional material is removed before use as a fuel.
Nuclear energy fuel for fission is mined as Uranium ore, see Renewable energy#Nuclear power.

Goodluck! Sometimes I agree science is BORING!

Ruth asks…

What is the difference between susatinable energy and renewable energy?

plain english please

Windmill Farms answers:

Renewable energy is energy generated from natural resources—such as sunlight, wind, rain, tides, and geothermal heat—which are renewable (naturally replenished)Renewable energy is derived from natural processes that are replenished constantly. In its various forms, it derives directly from the sun, or from heat generated deep within the earth. Included in the definition is electricity and heat generated from solar, wind, ocean, hydropower, biomass, geothermal resources, and biofuels and hydrogen derived from renewable resources.

Each of these sources has unique characteristics which influence how and where they are used.

Sustainable energy sources are most often regarded as including all renewable sources, such as biofuels, solar power, wind power, wave power, geothermal power and tidal power. It usually also includes technologies that improve energy efficiency

Robert asks…

Best renewable energy!!?

Kinetic energy. Think about this one everything moves…Animals, cars, The earth, our galaxy, water and us(Humans). It obviously takes energy to move anything there is no exceptions. Therefore everything is a potential energy source. I know the technology is avaliable, I’ve read of dance floors converting dancing into energy, so why not turn this into a grander scale. How much energy could be used from your local highway or airport….even in the wild. I’ve never understood how we could be in an energy crisis…when out whole existence even before industrial times was dependent on energy( our bodys create its own energy and not from fossil fuels)

Windmill Farms answers:

Renewable energy resources, such as wind, solar and hydropower, offer clean alternatives to fossil fuels. They produce little or no pollution or greenhouse gases, and they will never run out.

1. Solar Energy
The sun is our most powerful source of energy. Sunlight, or solar energy, can be used for heating, lighting and cooling homes and other buildings, generating electricity, water heating, and a variety of industrial processes. Most forms of renewable energy come either directly or indirectly from the sun. For example, heat from the sun causes the wind to blow, contributes to the growth of trees and other plants that are used for biomass energy, and plays an essential role in the cycle of evaporation and precipitation that makes hydropower possible.

James asks…

about renewable energy :)?

Can everyone tell me a bit about the different type of renewable energies: Biofuel, Biomass, Geothermal, Hydro power, Solar power, Tidal power, Wave power, Wind power
Thanks in advance :)

Windmill Farms answers:

Renewable energy is energy generated from natural resources—such as sunlight, wind, rain, tides and geothermal heat—which are renewable (naturally replenished). In 2006, about 18% of global final energy consumption came from renewables, with 13% coming from traditional biomass, such as wood-burning. Hydroelectricity was the next largest renewable source, providing 3% (15% of global electricity generation), followed by solar hot water/heating, which contributed 1.3%. Modern technologies, such as geothermal energy, wind power, solar power, and ocean energy together provided some 0.8% of final energy consumption.

Main renewable energy technologies:

The majority of renewable energy technologies are powered by the sun. The Earth-Atmosphere system is in equilibrium such that heat radiation into space is equal to incoming solar radiation, the resulting level of energy within the Earth-Atmosphere system can roughly be described as the Earth’s “climate.” The hydrosphere (water) absorbs a major fraction of the incoming radiation. Most radiation is absorbed at low latitudes around the equator, but this energy is dissipated around the globe in the form of winds and ocean currents. Wave motion may play a role in the process of transferring mechanical energy between the atmosphere and the ocean through wind stress. Solar energy is also responsible for the distribution of precipitation which is tapped by hydroelectric projects, and for the growth of plants used to create biofuels.

Renewable energy flows involve natural phenomena such as sunlight, wind, tides and geothermal heat.

Wind Power:

Airflows can be used to run wind turbines. Modern wind turbines range from around 600 kW to 5 MW of rated power, although turbines with rated output of 1.5–3 MW have become the most common for commercial use; the power output of a turbine is a function of the cube of the wind speed, so as wind speed increases, power output increases dramatically. Areas where winds are stronger and more constant, such as offshore and high altitude sites, are preferred locations for wind farms.

Since wind speed is not constant, a wind farm’s annual energy production is never as much as the sum of the generator nameplate ratings multiplied by the total hours in a year. The ratio of actual productivity in a year to this theoretical maximum is called the capacity factor. Typical capacity factors are 20-40%, with values at the upper end of the range in particularly favourable sites. For example, a 1 megawatt turbine with a capacity factor of 35% will not produce 8,760 megawatt-hours in a year, but only 0.35x24x365 = 3,066 MWh, averaging to 0.35 MW. Online data is available for some locations and the capacity factor can be calculated from the yearly output.

Globally, the long-term technical potential of wind energy is believed to be five times total current global energy production, or 40 times current electricity demand. This could require large amounts of land to be used for wind turbines, particularly in areas of higher wind resources. Offshore resources experience mean wind speeds of ~90% greater than that of land, so offshore resources could contribute substantially more energy. This number could also increase with higher altitude ground-based or airborne wind turbines.

Wind power is renewable and produces no greenhouse gases during operation, such as carbon dioxide and methane.

Water Power:

Energy in water (in the form of kinetic energy, temperature differences or salinity gradients) can be harnessed and used. Since water is about 800 times denser than air,

even a slow flowing stream of water, or moderate sea swell, can yield considerable amounts of energy.
One of 3 PELAMIS P-750 Ocean Wave Power engines in the harbour of Peniche/ Portugal.

There are many forms of water energy:

* Hydroelectric energy is a term usually reserved for large-scale hydroelectric dams. Examples are the Grand Coulee Dam in Washington State and the Akosombo Dam in Ghana.
* Micro hydro systems are hydroelectric power installations that typically produce up to 100 kW of power. They are often used in water rich areas as a Remote Area Power Supply (RAPS). There are many of these installations around the world, including several delivering around 50 kW in the Solomon Islands.
* Damless hydro systems derive kinetic energy from rivers and oceans without using a dam.
* Ocean energy describes all the technologies to harness energy from the ocean and the sea:
o Marine current power. Similar to tidal stream power, uses the kinetic energy of marine currents
o Ocean thermal energy conversion (OTEC) uses the temperature difference between the warmer surface of the ocean and the colder lower recesses. To this end, it employs a cyclic heat engine. OTEC has not been field-tested on a large scale.
O Tidal power captures energy from the tides. Two different principles for generating energy from the tides ar

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Micro Wind Turbine

George asks…

where can I buy a small home micro axially-turning wind turbine to put on your window or in balcony. micro.?

Windmill Farms answers:

I don’t know where u can buy that !!
Co-axial, multi-rotor horizontal-axis turbines
Two or more rotors may be mounted to the same driveshaft, with their combined co-rotation together turning the same generator — fresh wind is brought to each rotor by sufficient spacing between rotors combined with an offset angle alpha from the wind direction. Wake vorticity is recovered as the top of a wake hits the bottom of the next rotor. Power has been multiplied several times using co-axial, multiple rotors in testing conducted by inventor and researcher Douglas Selsam, for the California Energy Commission in 2004. The first commercially available co-axial multi-rotor turbine is the patented dual-rotor American Twin Superturbine from Selsam Innovations in California, with 2 propellers separated by 12 feet. It is the most powerful 7-foot diameter turbine available, due to this extra rotor.

Susan asks…

witch gives off more micro magnetic waves a microwave or a wind turbine?

i am only asking this because ted stevens has come up with some dumb ass thing about wind turbines inter feering with raido towers for airplanes of fire island

Windmill Farms answers:

They interfere with air current formations
imagine a place full of huge fans turning together, it still effects the air current, and it is true it in turns effect radio towers in smaller place or coastal regions with high tides and sea winds,
and remember wind turbines are charged to produce electricity which can in turn charge the air and turn it into micro magnetic waves, to a very big extent , ted Stevens is right about this

John asks…

Wind turbine for energy?

Would a windmill turbine be better than solar panels for electricity

Windmill Farms answers:

If you have plenty of land. The towers have to stand at least 30 feet taller than surrounding structures and at least two tower heights away from any building, also should they fall in any direction, it has to land on your property. Your neighbours also have a say as to the noise they generate and the impact they make to the scenery. Wind is inexpensive ( in comparison to solar ) and doesn’t have the water rights problem of micro hydro but not too many properties can actually have them. They are hardly carbon neutral as the energy and material cost to manufacture them is substantial. They also generate power mostly at night while peak demand is during the day.

Lizzie asks…

is it worth installing a wind turbine to save the planet?

looking to install a wind turbine from B&Q. This costs £1400, are they worth it or just a ploy to look good ?

Windmill Farms answers:

They are a ploy to look good, and heres some statistics my renewable energy lecturer gave me

-A wind turbine will produce maximum energy 30% of the time if on an industrial scale situated correctly

-A study in Holland of universities using small scale production found the average maximum output was 15% of the time (located randomly)

-If all of the possible locations in the UK (including shallow off shore) were used up for wind generation it would account for 10% of our energy needs

-Using this its safe to say that the payback on your investment would be around 50years assuming 15% maximum output over a year. There is no chance you’d produce enough to sell back to the grid even at 30%.

-It highly depends on where you are located, check the average windspeed of your are, too windy or too still its not worth it.

-Micro generation is several steps behind large scale generation, if your dead keen I would still suggest you wait, the amount of energy produced by these things is pittance compared to your consumption.

It is a ploy to look good, you would do far more by buying energy efficient lightbulbs and utilities, you’d get faster payback, probably cheaper and do more to ”save th planet”

Sandy asks…

Micro wind turbine for the roof?

Wind energy has always intrigued me. I’m curious about the viability of this type of wind turbine. Ordinarily, a wind turbine is supposed to require a 24 mph wind min in order to generate some energy. But the micro turbine is supposed to operate at much lower mph and it comes in a smaller size (size of a satellite dish?). Anyone have any experience with these? Do you know anyone who has one?

Windmill Farms answers:

You won’t get much energy off the smaller ones, but they cost a lot less and if you live in an area with good wind they will be quite good.

You might even be able to get a grant.

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Wind Power

Laura asks…

Is wind power generator at home really work ?

I heard about wind power generator and I want to make a wind power generator to power things in my house. Although I am not sure where to find good information. I want to save money. Is there any reliable information on how to make wind power generator at home?

Windmill Farms answers:

I made mine wind power generator and its saving me some good money :) I use it to power various things inside and outside my house. I found the best source of info for this at:

http://retirerichguide.com/WindGenerator.html

Good luck :-)

Paul asks…

How do I make my own wind power generators?

I want to make my own wind power generator at home because I want to use it to power my laptop and a small portable TV. How do I go about building wind power generators?

Windmill Farms answers:

I make my 2 wind power generators at home and you will need
a generator, blades battery and inverter.

I use them to power my lighting along my balcony.

Actually I got the infomation from http://www.makewindpowerathome.com. Thats where I got my blade designs from and learnt how to wire it up.. Its saving me some good money :)

Richard asks…

When is wind power expected to be easily accessible to the general public?

What is keeping wind power from widespread use and when is it expected to be easily accessible to the general public?

Windmill Farms answers:

The last time you had a choice to pick your source of electric power, you may have had a choice for wind power produced electricity at about a 1-1.5 cent per Kw of electricity premium.Otherwise called “green”, it is on the grid. It is generally more expensive than traditional power but it is improving.Estimates are that wind power could produce 20-30% of the grid power by 2030. The Bush years saw a reduction or elimination of tax credits for green power. The Obama years may see an incentive which would raise the expectations because of tax relief or incentives. After all, Connie Rice had a vested interest in big oil but Obama doesn’t seem to.

Helen asks…

Is it possible to do build a wind power generator to turn a small electric motor?

The quoted question is:

Build a wind power generator that will turn a small electric motor out of everyday items if possible.

N.B. You cannot use anything that is typically found in a science lab.

Windmill Farms answers:

Yes, absolutely. What’s more, it’s actually quite easy. You won’t get significant amounts of power out of it but it will run a very small electric motor so long as you use a generator that is significantly larger than the motor you are driving.

You’ll need something that you can use for windmill blades and a motor that you can drive as a generator.

The best and easiest solution is to use a radiator fan from a modern car. Most modern cars use electrically powered fans and this is perfect for you because it takes care of the fan assembly and the generator in one go without the need for a complex assembly procedure. They are cheap and easy to get hold of too. Any car wreckers should be able to sell you one for under $20.

This type of fan is not the ideal configuration for capturing wind (they are designed to generate airflow from electricity, not electricity from airflow) but the advantages you get from simplifying the construction process more than makes up for this. Also, as far as I am aware, they are all DC motors which is exactly what you need.

Because a generator is identical in construction to a motor, this fan will generate electricity for you without any need for modification. All you have to do us hook up your small hobby motor to the terminals of the fan motor and put it somewhere where there is enough wind to get the fan spinning. You should be able to generate up to 12v depending on how fast you can get it spinning. If you find that it takes more airflow than you can manage to get it spinning fast enough, you can always construct a ram scoop (like a big funnel with the wide end open and facing the incoming wind and the fan across the narrow end) so that the wind is scooped in from a wider area and forced through the fan at higher speed. This doesn’t need to be that strong, corrugated cardboard (like you get from cardboard boxes) would probably do the trick.

So long as you get the fan spinning at a reasonable rate, you should be able to easily power a small motor. Of course, as soon as the fan slows or stops, so does the motor so it’s not really a viable solution for real world applications. It should be fine as a simple experiment to demonstrate wind power though.

If you want it to be a bit more practical (i.e. Actually work in the real world rather than it just be for demonstration purposes), it would probably be better to run the motor from a battery and use the generator to recharge the battery. This is how proper wind powered systems work. However, the setup becomes more complex when you do this and some circuitry is required to manage the recharging of the battery, among other things, so unless you have some experience with electronics, I wouldn’t advise it.

It sounds like this is outside of the parameters of your experiment anyway.

The motor you are going to drive should, ideally, be able to run on voltages between about 3VDC and 12VDC but cheap and easy to find motors like this one (http://www.jaycar.com.au/ShowLargephoto.asp?id=3255&IMAGE=) that is designed to run on voltages from 3V to 4.5VDC will still probably work OK for your purposes. If it is fed 12V continuously for long periods of time, it may overheat and burn out but, considering your setup, it will probably last at least long enough to meet your needs. If you do go for a low voltage motor like this and you want to make sure you don’t damage it, just make sure that you don’t spin the fan too fast and monitor the temperature of the motor. If it starts getting hot (i.e. Too hot to touch), stop it and let it cool down for a while before you start it again. It’s not too big a deal if you do burn it out though, these motors retail for about $2 so you won’t exactly go broke if you kill it.

Good luck with it.

Hope this helps.

TV

Joseph asks…

What is the wind power generated by a fan?

Can anyone tell me the formula and the wind power generated by a box fan who has blades 20 inches long?

Windmill Farms answers:

Whatever the wattage rating on the fan is x about about 80%, is how much wind power the fan produces.

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Vertical Wind Power

Sharon asks…

Need information on Vertical WIND POWER?

Due to the economy and small amount of extra cash, I am looking into a vertical wind generator instead of solar. Does anyone have any good information about these. I want to spend initially less than $3,500 and no more than $5,000 to put up one of these on my house or back yard. I live in the city of Colorado Springs and I heard the vertical wind takes up less room and is not very noisy to prevent angry neighbors. Any info is great as I can not find a good website with information.

Windmill Farms answers:

I suggest you to build your own Wind Mill.
You can build Wind power generator in less then 100$! In
Your backyard, and even enjoy the process ?

There are a lot of e-books teaching how to do this.
I would recommend you on Earth4Energy manual that
Include step by step instructions + video (it include also instructions
How to build your own solar panels)

You can read review on Earth4Energy on the following link:

http://recomended-prods.com/earth4energy

Good Luck!

Joseph asks…

How much does a quietrevolution Vertical wind turbine cost?

We would like to install some kind of vertical windmill at our university and we need some more information about the exact initial and running costs and how much we would save if we put them on buildings or around our campus.

Windmill Farms answers:

Vertical wind generators are poor performers no matter how they are made.

There is a very recently published book that you should read called “Home brew Wind Power, and you can get it here http://www.otherpower.com .

You can also find a good review at http://www.rebelwolf.com/images/review.pdf

I was just about to write up a review on my web site – but found this question and thought I would save you a lot of grief.

The book title is perhaps a little misleading because it goes beyond what you’d consider “home brew”. These people have excellent engineering skills and their work is the state of the art.

These guys are serious — they work through the technical and physical design considerations (including discussions of vertical axis units) leading up to designs that actually work and even get into the detailed designs of creating the alternator from scratch. It also has links to an enormous amount of reference material.

You mention on buildings or around campus. Please be aware that the generator needs to be 30 feet above the buildings and the tallest trees to get decent power. Start by erecting an recording wind instrument on one of your existing communications towers (don’t get zapped) and find out how much wind you really have. Then calculate the maximum theoretical capacity using the equations in the book and you will find your answers.

Nancy asks…

which produces greater amount of power, vertical-axis wind generator or horizontal-axis wind generator?

Windmill Farms answers:

The direction of the axis isn’t the sole determinant of power, however it does tend to correlate.

Vertical axis generators (the things that look like () shapes on sticks) tend to be smaller and used where there isn’t as much space, while horizontal axis windmills are more often seen on huge spars with very large blades out in the middle of nowhere. So a horizontal axis generator is more likely to be a bigger one, and therefore generate more power.

I suspect that the vertical axis generators also have scaling issues that prevent them from being as effective at large size, such as the fact that wind speeds vary with height above the ground.

Mark asks…

where in the world could wind power be used?

also where in the world is wind power used??
when was wind power invented???

Thanks for ur help.

Windmill Farms answers:

Where? Anywhere there is wind.

Wikipedia:

Windmills were used in Persia (present-day Iran) as early as 200 B.C.[1] The windwheel of Heron of Alexandria marks one of the first known instances of wind powering a machine in history.[2][3] However, the first known practical windmills were built in Sistan, a region between Afghanistan and Iran, from the 7th century. These “Panemone” were vertical axle windmills, which had long vertical driveshafts with rectangular blades.[4] Made of six to twelve sails covered in reed matting or cloth material, these windmills were used to grind grain or draw up water, and were used in the gristmilling and sugarcane industries.[5]

Windmills first appeared in Europe during the middle ages. The first historical records of their use in England date to the 11th or 12th centuries and there are reports of German crusaders taking their windmill-making skills to Syria around 1190.[6] By the 14th century, Dutch windmills were in use to drain areas of the Rhine delta.

The first electricity-generating wind turbine was a battery charging machine installed in July 1887 by Scottish academic James Blyth to light his holiday home in Marykirk, Scotland.[7] Some months later American inventor Charles F Brush built the first automatically operated wind turbine for electricity production in Cleveland, Ohio.[7] Although Blyth’s turbine was considered uneconomical in the United Kingdom[7] electricity generation by wind turbines was more cost effective in countries with widely scattered populations.[6]

Laura asks…

Help With Wind Power Information?

I have some topics I would like to cover but you do not have to answer all, just the ones you know.

1. Why is wind power important?
2. Geographically, where is it most important, and Why?
3. What is the history?
4. What is the current status?
5. What is the future?
6. Political Disagreements?

Thank you so much for your input because I am very curious abou the topic.

Windmill Farms answers:

As for question #2 I saw an article that said;
“Wind Turbine Energy Fact #1

Wind speed becomes a main factor as to whether your environment can support wind energy production. The fact is that even the most efficient vertical axis wind turbine cannot produce enough power to be of any use at wind speeds below 9MPG. And most models cannot be effectively relied upon until wind speeds are up to 12 MPH or more. And really this needs to be consistent wind speed. Not just the occasional gusts. You can research your local wind speed by visiting awea.org. But before you jump the gun, read on…”

Anyway, it seems that geography could play a key role in the consistency and power of wind. I will leave the link if you want check out more.

Hope that helps

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Advantages Of Wind Power Over Fossil Fuels

Donna asks…

Advantages and Disadvantages of alternate fuels.?

People tell me some good advantages and disadvantages of alternate fuels how will they affect our economy…???/ HELP ME

Windmill Farms answers:

Advantages :
Lessen dependence on fossil fuels ,esp foreign oil.
Most produce less air pollution . Wind, solar, nuclear produce no air pollution,and do not contribute to global warming.
They do not contribute to health problems. (except a nuclear accident)
Solar especially can be decentralised ,that is small home sized installations are becoming practical.
Home sized wind generators are available, too.
Hydrogen fuel burns clean and has no waste but water vapor.
Disadvantages:
Nuclear is expensive, and presents a waste disposal problem,possible release of radiadtion into the air,and terrorist thefts of nuclear fuel for bombs.
Wind power is site specific and requires areas where a lot of wind is present, like mountain tops and places in CA.. Some say wind mills present a hazard to wild birds. Home sized installations require maintenance.
Solar requires an area with a lot of sunshine like the South or Southwest US.
Alternative fuels like ethanol and wood still make pollution,although ethanol makes very little.
If I were to choose, I would choose a combination of wind and solar for electricity production. When the sun is not shining, the wind is blowing, they suplement each other.
For vehicles, the ideal would be electric, recharged by solar or wind generated power. Hydrogen can be safely burned in either internal combustion engines , or electric fuel cells,but a system of hydrogen service stations would have to be established.
As far as the economy goes, all alternative fuels, could provide a lot of jobs in manufacturing,construction, distribution. There would be a loss in oil related jobs, but it would be spread over many years as oil based fuels are phased out. Oil would still be used for lubricants,plastics, chemicals, and even for some fuel applications for as long as oil was available.

Lisa asks…

Can someone please briefly list some advantages/disadvantages of Fossil Fuels, Uranium, Wind, Solar, Geo.?

Can somebody please *briefly* list some advantages/disadvantages of the following:
*Fossil Fuels
*Urnanium
*Wind
*Solar(Energy)
*Geothermal

Windmill Farms answers:

For fossil fuels

advantages:

cheap.
Easy access
abundant at the moment
widespread

disadvantages:

limited supply
hurts the environment
inefficient use of fueling power

for wind and solar

advantages:

naturally occuring, does not cost money to make the energy just to obtain it
ceaseless supply (unless of course hte world ends, but just forget for now lol)

disadvantages:

Unpredictable: the sun might decide not to come out for a couple days, occurs in places like Alaska or even in good old So-Cal, where it decides to rain for a week.

Thats all i ahve on the top of my head. Hope others cover in more detail. Gluck. God bless

David asks…

Would replacing all our fossil-energy sources with solar and wind power be practical?

All have some advantages and disadvantages.

Would it make sense to abandon all our current fossil fuel power sources and replace them with windmills and solar panels? Would we see a major decrease in CO2 levels as a result?

Windmill Farms answers:

No, it is not possible nor practical.

Reasons:
1. Solar only gives you power during the day, if the sun is out. The more cloud cover you have the less solar production you get.
2. Snow cover on solar panels stops all solar production. Dust and dirt on your solar panels reduces production.
3. Wind energy from windmills/wind farms depends on weather patterns for good production.
4. Wind and solar energy production can not match the load for energy use.
5. At current costs and values, if you do NOT have a subsidy, wind and solar project have a 20 – 30 year simple payback. Life of those projects is often less than 20 – 30 years thus the life cycle cost is a negative, not a positive.

According to NASA, Dr. Hathaway, we could be headed into a new Dalton Minimum. That would mean global cooling not global warming. If you believe in AGW, then you might want to start lobbying for MORE CO2, not less.

EDIT:

Solar Panel Ratings approx 100 W per sq yd

2.5 Million Mega watts = 2.5 x 10^10 sq yd of solar panels

2.5 x 10^10 sq yd = 3,097,600 sq mi

Now you generally rate thee panels at 80% for production. Standard system design offset. So you need to divide that number by 0.8

Solar Panel area = 3,872,000 sq miles

To get a constant generation of 2,500,000 mega watts, you will need to make this area still alrger allowing for weather dust snow etc.

So you have an area approximately 2,000 miles by 2,000 miles. Covered 100% by solar collection panels. This does not leave much room in the lower 48 for farms, forests, cities, homes, rivers, lakes…

My source? I design and install these systems.

Michael asks…

Give 3 economic advantages for using biofuels rather than fossil fuels? HELP!!!?

Windmill Farms answers:

Doesn’t require any radical changes to switch to the use of biofuels- unlike the difficulties in switching to other renewable energy sources such as solar and wind power.

Are cheaper than fossil fuels. Many governments are now offering tax incentives to buy greener cars that run on biofuels (ethanol being one example).

Are considered ‘carbon neutral’ by some people. This is because the carbon dioxide they release when burnt is equal to the amount that the plants absorbed out of the atmosphere. Therefore, they don’t contribute to global warming. However, it does require some fuel to power the machinery on the farms where biofuels are produced. Still, they are better than fossil fuels! Research suggests that they reduce carbon emissions by 50-60%.

Reduce dependence on foreign oils. Oil fluctuates in price rapidly, so changing to biofuels will help buffer against the change.

Emit less particulate pollution than other fuels, especially diesel.

Are renewable sources of energy as you can just keep producing more.

Ethanol is very inexpensive to produce.

Can help prevent engine knocking.

Chris asks…

electric cars still need fossil fuels to make electricity?

When people say “Oh look at my new electric car, im saving the enviornment,” it still takes fossil fuels to make the electricity to charge the car, so….

…while the car might not be burning the fuel, fossil fuels are still being used.

Whats the argument here?

Windmill Farms answers:

NUCLEAR POWER = NO FOSSIL FUELS
WIND TURBINES = NO FOSSIL FUELS
SOLAR PANELS = NO FOSSIL FUELS
ETC. ETC. ETC.

There are many ways of producing electrical power with no fossil fuels. And even though we’re still highly dependent on coal and oil, the alternatives are becoming more realistic and more prevalent. Eventually, electric vehicles will be supplied by cleaner sources. For now, there are still many advantages – even if much of the power comes from fossil fuel based electricity.

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