Monday, December 26, 2011

Monday, December 19, 2011

How Does Wind Power Work?

!±8± How Does Wind Power Work?

Wind energy is an environmentally inert, clean, and inexhaustible source of electric power that, as it turns out, is really just another form of solar energy. The sun creates wind by its uneven heating of the planet's atmosphere. It's moderated by the earth's rotation and irregularities in its surface. The planet's terrain, water bodies, and vegetation then affect the wind flow patterns. With the invention of wind turbines, we can now harness the wind's energy and use it instead of purchasing electricity from the utility companies that are derived from non-renewable sources.

The easiest way to understand how wind turbines work is to think of a fan operating in reverse - rather than electricity spinning the blades and thus generating wind, the wind spins the blades, thereby generating electricity.

Breaking it down to it's simplest components, a wind turbine operates as follows:

the wind turns the blades

the blades spin a shaft

the shaft connects to a generator

the generator produces electricity

To expand on that simplification, the turbine's blades are connected to a hub that's mounted atop a turning shaft which runs into a gear transmission box that increases the turning speed which, in turn, is connected to a high speed shaft that cranks the generator. If the wind speeds get too high, a brake is deployed to slow the blades down and prevent damage being done to the system.

There are two basic types of wind turbine:

horizontal axis wind turbines: the kind most commonly in use today and the focus of U.S.

Department of Energy research on wind power, these come in two varieties -

2-blade horizontal axis turbines spin downwind

3-blade horizontal axis turbines spin upwind

vertical axis wind turbines

The size of a wind turbine will influence its power generating capacity, with the smaller windmills that produce under 50 kilowatts being the type most commonly used to power water pumps, telecom dishes, and homes.

In an innovative advancement known as hybrid wind systems, these smaller turbines are also being used in combination with solar (photovoltaic) systems, rechargeable deep-cycle batteries, and diesel generators to provide storable, on-demand power in more remote, off-the-grid places.

In most residential situations, a wind turbine is used as a supplemental source of power in combination with local, on-the-grid, utility power. There is something called a cut-in speed (7-10 miles per hour), below which the wind turbine will cease to provide an output, and the utility grid provides the structure's power. Above the cut-in speed, the wind turbine kicks in and the grid power supply is proportionately reduced (depending on the structure's energy draw at the given moment).

If the output produced by the wind turbine exceeds the draw from the structure (and/or storage devices, like batteries), the excess power is then sold back to the pubic utility company. Use of wind energy can reduce a residence's energy costs by, on average, 50-90%, though these numbers are influenced by a variety of factors and, as such, can fluctuate greatly.

In a typical residence that uses under 10,000 kilowatt hours per year of electric power, a 5-15 kilowatt wind turbine should more than suffice. This type of system can run anywhere from ,000-,000 to install, depending on a variety of factors, including: its size, your intended application, and any service contracts entered into with the manufacturer.

Being that certain situations (such as in the city) make personal wind power use an unviable option, a general rule of thumb is to consider installing your own wind power system if and only if you pay at least 10 cents per kilowatt hour and your location's average wind speeds exceed 10 miles per hour.

The larger wind turbines have capacities upwards of 50 kilowatts, running these days into the several-megawatt range. These windmills, known as utility scale turbines, can be grouped together and connected to central lines for transmitting and distributing in bulk to the local utility grids that, in turn, sell that power to homes and businesses across the land. These are called wind power plants or wind farms.


How Does Wind Power Work?

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Friday, December 16, 2011

SUPER SEXY WINDPOWER PUMP BY INVENTOR WIDEON ZACAL 09276912809 PHILLIPINES

Lowest cost highest efficiency Windmill with only one integrated 2-blade propeller of broad dimensions dynamically and angularly so balanced to minimize the stability challenge of such design. It makes the dream of a million farmers a rfeality being so affordable. A fraction of the cost of usual pumping windmills it has so few parts and can last 10 to 15 years water pumping without electricity, without fuel, without motor motors burnouts, NO ELECTRICITY, NO FUELS, NO MOTORS TO BURN! email addr. wideonzacal@yahoo.com

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Saturday, December 10, 2011

Wallmonkeys Peel and Stick Wall Decals - Windmill and Clouds by Tom Marks - 36"H x 35"W Removable Graphic

!±8±Wallmonkeys Peel and Stick Wall Decals - Windmill and Clouds by Tom Marks - 36"H x 35"W Removable Graphic

Brand : WallMonkeys
Rate :
Price :
Post Date : Dec 10, 2011 06:21:18
Usually ships in 1-2 business days



WallMonkeys wall graphics are printed on the highest quality re-positionable, self-adhesive fabric paper. Each order is printed in-house and on-demand. WallMonkeys uses premium materials & state-of-the-art production technologies. Our white fabric material is superior to vinyl decals. You can literally see and feel the difference. Our wall graphics apply in minutes and won't damage your paint or leave any mess. PLEASE double check the size of the image you are ordering prior to clicking the 'ADD TO CART' button. Our graphics are offered in a variety of sizes and prices.

  • WallMonkeys are intended for indoor use only.
  • Printed on-demand in the United States Your order will ship within 3 business days, often sooner. Some orders require the full 3 days to allow dark colors and inks to fully dry prior to shipping. Quality is worth waiting an extra day for!
  • Removable and will not leave a mark on your walls.
  • 'Fotolia' trademark will be removed when printed.
  • Our catalog of over 10 million images is perfect for virtually any use: school projects, trade shows, teachers classrooms, colleges, nurseries, college dorms, event planners, and corporations of all size.

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    Wednesday, December 7, 2011

    Fundamentals/Wind-Driven Water

    !±8± Fundamentals/Wind-Driven Water


    Rate : | Price : | Post Date : Dec 07, 2011 05:32:31
    N/A

    Water-pumping mills are used in crop irrigation and water supply for livestock in various semi-arid regions around the world including the plains of North America. This technology is also a key to providing drinking water to people of developing countries. By providing a thorough treatment of the factors which affect the success of pump performance, combined with the fundamentals of machine design, this book distinguishes itself from a simple design manual. It allows the reader to determine the most efficient wind-pump configuration based on their specific needs and resources, and discusses the latest international developments in wind-driven water pumping technologies, including a survey of the advantages and disadvantages of the alternative configurations to the more "standard" designs.

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    Friday, December 2, 2011

    Does Windmill Aeration Live Up to the Hype?

    !±8± Does Windmill Aeration Live Up to the Hype?

    Is Windmill Aeration Right for Your Pond?

    There is a certain amount of 'buzz' whirling around the internet about windmill aeration. There are dozens of sellers pushing their own unique twist, all vying for consumer's attention using the badge of eco-friendly aeration.

    But what is really going on here? Do windmills live up to their seller's hype? In this article, we will analyze the pros and cons of aeration windmills to see how they stack up.

    Installation

    Pros:

    There aren't any, unless you really enjoyed Erector Sets when you were a kid.

    Cons:

    The windmill aerators come disassembled, and require a substantial amount of time and energy to erect. Such assembly projects are rarely as easy as they seem. Many of these windmills also require you to pour a concrete base, which adds to the difficulty. Expect a multi-day project.

    With every windmill, you must also install a submerged aeration unit, largely without direction. The effectiveness of each diffuser depends on relatively specific placement-and these companies often leave you to figure this out on your own.

    Operation

    Pros:

    Once purchased and installed, windmills have no operating cost.

    Cons:

    While 'cheap' to operate, windmills provide the customer with a minimal amount of aeration-requiring a minimum wind speed of 3-10 miles per hour just to begin operation.

    Even on the absolute windiest of days, windmills max out at 2-4 cubic feet of air (cfm) output. On a normal day, if it is running at all, it would average between 1-2cfm pumped into the pond-which is less than sufficient.

    Windmills are absolutely reliant on the wind, so inconsistent performance can be expected, and even in best case scenarios your pond will be under aerated.

    Pond Treatment

    Pros:

    Windmill Aeration adds a little bit of air to your pond, more than would be imparted if no aeration was used.

    Cons:

    We've already established that the amount of air produced by windmills is both inconsistent and insufficient for adequate pond aeration.

    When it is actually working, a pump rate average of only 1-2cfm is not adequate to aerate & mix, both of which are integral to reducing algae and keeping the pond water fresh. When aeration is low, the mixing is even lower. Even at top speed, a windmill's fine bubbles rise too slowly to thoroughly mix the water.

    Windmill aerators will also operate less (or not at all)at night, as the windspeed is generally much lower at this time.

    Unfortunately, ponds have the lowest levels of dissolved oxygen at night-so windmill aerators often do not aerate your pond when it needs it most. This can lead to stressed fish and significantly diminished pond treatment, raising the potential for algae to proliferate.

    The Verdict

    The age-old adage of "you get what you pay for" appears to ring true in the case of windmills-you do get an aerator, albeit one with little ability to treat your pond the way you intended.

    When purchasing windmill aerators, it seems that customers would be losing sight of what they are trying to achieve with their pond. Sure there is a low operating cost, but you'd be spending thousands of dollars to under treat your water with a lousy, tough-to-install product.

    The windmill vendors love to say they're 'green,' but that's hardly the case unless they are talking about the 'green' you would be spend on a product that doesn't get the job done.

    What's more, many windmill customers actually end up using chemicals to supplement their pond treatment-costing more money and ruining the environment.


    Does Windmill Aeration Live Up to the Hype?

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    Monday, November 28, 2011

    Tourist Photographs Field Full of Windmills Pumping Irrigation Water Stretched Canvas Poster Print by Maynard Owen Williams, 12x16

    !±8± Tourist Photographs Field Full of Windmills Pumping Irrigation Water Stretched Canvas Poster Print by Maynard Owen Williams, 12x16

    Brand : Art US | Rate : | Price : $99.99
    Post Date : Nov 28, 2011 07:35:06 | Usually ships in 6-10 business days

    Decorate your home or office with high quality wall décor. Tourist Photographs Field Full of Windmills Pumping Irrigation Water is that perfect piece that matches your style, interests, and budget.

    • Print Title: Tourist Photographs Field Full of Windmills Pumping Irrigation Water
    • Artist: Maynard Owen Williams
    • Size: 12 x 16 inches
    • Please visit www.amazon.com/artdotcom to check for promotions from time to time.

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    Tuesday, November 22, 2011

    (pt 4) Water Pumping Windmills

    Bryce Black of LoTec Windmill Service talks about the history and design of mechanical water pumping windmills. This workshop was held at the 2009 MREA Energy Fair in Custer, WI.

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    Sunday, November 20, 2011

    Tourist Photographs Field Full of Windmills Pumping Irrigation Water Photographic Poster Print by Maynard Owen Williams, 30x40

    !±8±Tourist Photographs Field Full of Windmills Pumping Irrigation Water Photographic Poster Print by Maynard Owen Williams, 30x40

    Brand : AllPosters US
    Rate :
    Price : $99.99
    Post Date : Nov 20, 2011 06:43:46
    Usually ships in 2-3 business days



    Tourist Photographs Field Full of Windmills Pumping Irrigation Water is digitally printed on archival photographic paper resulting in vivid, pure color and exceptional detail that is suitable for any museum or gallery display. Finding that perfect piece to match your interest and style is easy and within your budget!

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    Saturday, November 12, 2011

    Wallmonkeys Peel and Stick Wall Decals - Windmill and Clouds by Tom Marks - 48"H x 46"W Removable Graphic

    !±8± Wallmonkeys Peel and Stick Wall Decals - Windmill and Clouds by Tom Marks - 48"H x 46"W Removable Graphic

    Brand : WallMonkeys | Rate : | Price :
    Post Date : Nov 12, 2011 21:48:05 | Usually ships in 1-2 business days


    WallMonkeys wall graphics are printed on the highest quality re-positionable, self-adhesive fabric paper. Each order is printed in-house and on-demand. WallMonkeys uses premium materials & state-of-the-art production technologies. Our white fabric material is superior to vinyl decals. You can literally see and feel the difference. Our wall graphics apply in minutes and won't damage your paint or leave any mess. PLEASE double check the size of the image you are ordering prior to clicking the 'ADD TO CART' button. Our graphics are offered in a variety of sizes and prices.

  • WallMonkeys are intended for indoor use only.
  • Printed on-demand in the United States Your order will ship within 3 business days, often sooner. Some orders require the full 3 days to allow dark colors and inks to fully dry prior to shipping. Quality is worth waiting an extra day for!
  • Removable and will not leave a mark on your walls.
  • 'Fotolia' trademark will be removed when printed.
  • Our catalog of over 10 million images is perfect for virtually any use: school projects, trade shows, teachers classrooms, colleges, nurseries, college dorms, event planners, and corporations of all size.

  • More Specification..!!

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