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Wind Energy Systems- A Realistic Source of Residential Wind Energy?
Author: John O Toole
1. The wind turbine blades start to rotate with the action of the wind on them.
2. The spinning of the blade cause a shaft inside the gearbox at the top of turbine to rotate.
3. The shaft is connected to a gearbox which in turn starts rotating with increasing speed.
4. The rotational energy is converted into electrical energy by a generator. This is achieved with the use of magnetic fields.
5. The electricity from the wind turbines reaches the transformer which converts it to the correct voltage for the distribution system.
6. The power is then ready to be supplied to consumers and is distributed from the power grid.
This is the basic process used for obtaining electricity from wind energy systems. Two types of turbines are used: two-blade and three-blade. A two-blade turbine faces away from the wind and a three-blade turbine faces into the wind.
People thinking of using small turbines for their homes should keep in mind, that it’s highly unlikely that they could power your entire house with less than a dozen turbines. The best solution is to use the turbines, but also remain connected with the power grid and make use of solar energy also through the use of solar panels which you can also make yourself.
Then when there is no wind or the wind turbine is not supplying enough electricity you can switch to the power coming from the grid.
Wind turbines were originally used to grind corn. But, the work done in wind energy development has enabled us to harness the energy of the wind to provide electricity and protect our environment from pollutants.
Article Source: http://www.articlesbase.com/home-improvement-articles/wind-energy-systems-a-realistic-source-of-residential-wind-energy-1339433.html
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What mass-energy storage systems are available to store energy from wind-power??
By way of example, if a two-tier reservoir system was constructed and during times of excess wind energy the surplus was used to pump water from the lower to the higher reservoir, and the water was then used to run hydro-turbines during times of lower wind energy production.
Would some type of ‘green energy battery’ like this, be one answer to the drawbacks with wind-power?
Where can I learn/help design wind mills and alternative energy systems.?
I would like to find a company willing to take me on as an apprentice in designing home/business alternative energy systems. I have some designs in my head and I enjoy desinging efficient systems. My skills are mostly electrical troubleshooting, but I work with mechanical systems as well at my current job.
I can design from home and transmitt across the internet any desired drawings. I have a garage I could build prototypes in(and a wind tunnel at work with solar loading I could sneak into during the off hours)
I would like to keep my current job, at least for now. I expect a reputable company or some cash up front to show me you are serious. I know and use excel and have evidence I can use solid works successfully and excel spread sheets for design tables. I even looked up wind statistics for my area and learned what a rose chart was. Deanrwhite@comcast.net(put the word “banana” in the subject.
where to find wind and renewable energy systems dealers?
does it worth the installation expenses?
any advice from satisfied user ?
Are solar and wind energy systems suitable only when the sun is shining and the wind blowing?
Also please refer me to any professional journals and popular literature sources that can help with this question?
where should solar energy, wind power, and geothermal energy systems be located on a farm?
Please give a brief description of where each of these should be located on a farm and why.
Solar energy system:
Wind Power system:
Geothermal Energy system:
Thanks
Often solar panels are placed on a roof. If it is on the main house it will also keep the house cooler and electrical wiring lines will be shorter. But if they are on the ground it will be easier to keep the panels clean. In either place it should not be shaded.
A wind power system should be as high as possible and away from trees and buildings that might obstruct the flow of air, but you would not want to locate it so far away that electric lines pose too much resistance.
A geothermal system can be built in many different ways. If there is a pond nearby that is deep enough using this for the ground loops is the cheapest method. Trenches can be dug and a long loop system installed or most commonly two wells can be drilled and water will be pumped from one go through the system and be deposited in another well. The equipment that uses the loop will be located within the house.
There are some options. For either, you can tie them to the grid, and hopefully one area will have a surplus when another area is in the doldrums. Electricity is already transferred long distances, so this is not new, but load balancing is an issue, and there are problems with new power sources being added to the grid.
For solar, first maximum energy load is during the day, particularly on hot days when the A/C is needed, so solar plants can take the place of natural gas “peaker” plants, used to help with a peak load. Second, if you have solar thermal (as opposed to solar photovoltaic), you can heat up a mass which retains its heat, and then use that heat later. This could work for several days of heavy clouds, but overall power production would eventually be reduced. Photovoltaics work rather well in light overcast situations, it doesn’t need a clear blue sky.
This is Industrial Sciences/ Industrial Engineering/ Industrial Management/ Industrial Production/ Industrial Manufacturing/ Industrial…………….question.
This is Geological Section; please post your question somewhere else.
Yes
It’s so tempting to write an essay on this in here… must resist…. resiiiiist….
(1) Wind Is Not The Only Fruit
Pumped storage already exists – the UK has four stations. But they were built to balance off conventional power generation. Sizewell B nuclear PS is UK’s biggest indigenous balancing problem – if one of the two units flicks off, that takes 1320MW off the system instantly. The cross channel interconnector can take 2000MW off. Wind doesn’t do that – each turbine is autonomous, and even the largest offshore machines are never bigger than 5MW each. They don’t all flick off at once.
(2) Time Matters
Electricity balances at all instants. http://www.dynamicdemand.co.uk for more. System Operators must cater for imbalances on all timescales. They do this by:
- “instantaneous”: large consumers able to switch off if frequency drops too low.
- sub-second: spinning intertia
- seconds: head of steam
- a few more seconds to a couple of minutes: pumped storage
- minutes: reserve (standing) generation
- hours: warming instructions to large generators
- days->years: “The Market Shall Provide”…
(2) Pumped Storage
Pumped storage is the cleanest, greenest of batteries, and you get 70-80% of the energy back that you put in. It costs a kings’ ransom to build one.
(3) Compressed Air Energy Storage
USA and Germany have one plant each; think there are more in the post. Basically they divert the hot compressed air halfway through its travels through a gas turbine into a disused salt mine. It is part of a fossil power station though so it’s tricky to say how much you get back for what you put in. I’m not sure of the numbers.
(4) Deferred consumption
Industrials can stop consuming during peaks or say in the first hour after a storm-driven wind turbine shutdown to allow other plant to get going. This type of energy storage is very efficient. http://www.flexitricity.com/
(5) District heating with hot water storage
Lots of examples, mostly in Denmark. District heating takes waste heat from generators to heat hot water. If there’s a nice big hot water reservoir, then the generator can generate mostly when the wind is low while still allowing people to consume heat when they want to. http://www.emd.dk/
(6) Hydrogen and associated uses.
http://www.pure.shetland.co.uk/ – this is a really nice project involving a wind turbine, an electrolyser, some hydrogen bottles, a fuel cell, and a vehicle. The energy just nips from one to the other depending on where it’s needed.
There are other uses for hydrogen, and if you make it opportunistically when the wind is up, you’re storing energy. http://www.anglesey-wind.co.uk/ is an enterprising outfit with lots of ideas on that score.
Transport is the very obvious alternative use scenario for renewables – you just fill up the stock of H2 bottles at filling stations when your wind farms are at full tilt, and then swap them for the empty ones of passing motorists bottle by bottle. Renewable cars, howzat?
(7) Batteries
Don’t knock ‘em! Off grid power at a Youth Hostel up in the highlands of Scotland relies on hot water, lead acid batteries, and a single wind turbine. Bliss (trust me I know, I arrived there very wet and cold one day). Plus there are other batteries – http://www.pacificorp.com/Press_Release/Press_Release36434.html is a Canadian system built in Utah
(8) Fossil fuel
And this is what we actually do rely on as an energy store, and would continue to rely on if wind had never been thought of. Unconverted fuel is energy storage. Don’t blame wind for needing storage to back it up – it all needs that!
http://www.scoraigwind.com/
Good starting place