Blowing Wind and Shining Sun

[Miller123]

Wind energy is one of the best renewable energies available. Tapping this energy would require the installation of wind turbines. The wind turbines have blades that are rotated by the blowing wind. These blades are connected to a drive shaft that turns an electric generator to produce electricity. Installation of these wind turbines would require a huge inflow of

The working of these wind turbines is simple. When the sun heats up the air above the land, it expands and rises, giving its place to the cooler and heavier air above. This makes the wind to blow and over the airfoil shaped blades of the turbine causing them to turn. The blades are connected to a drive shaft that turns an electric generator to produce electricity.

The wind turbines are as much dependent on sun shining as it is dependent on the blowing wind. This is so because the blowing wind is the result of the sun shining.

Many new innovations and developments have taken place in the field of wind turbines. The turbines that are used in wind farms for commercial production of electric power are usually three-bladed and pointed into the wind by computer-controlled motors. These have tip speeds of up to six times the wind speed, high efficiency, and low torque ripple, which contribute to good reliability. The newer innovations have decreased the cost of producing electricity from wind 80% since 1980.

[ImanCarrot]

Hi, I'm not totaly convinced that Wind Turbines are all that efficient- we have lots of them in Scotland and, to tell the truth, they just don't make money... if they did there would be a lot more of them.

Nuclear is the way to go.

[fizzissist]

Originally Posted by Miller123 Wind energy is one of the best renewable energies available. Tapping this energy would require the installation of wind turbines. The wind turbines have blades that are rotated by the blowing wind. These blades are connected to a drive shaft that turns an electric generator to produce electricity. Installation of these wind turbines would require a huge inflow of The working of these wind turbines is simple. When the sun heats up the air above the land, it expands and rises, giving its place to the cooler and heavier air above. This makes the wind to blow and over the airfoil shaped blades of the turbine causing them to turn. The blades are connected to a drive shaft that turns an electric generator to produce electricity. The wind turbines are as much dependent on sun shining as it is dependent on the blowing wind. This is so because the blowing wind is the result of the sun shining. Many new innovations and developments have taken place in the field of wind turbines. The turbines that are used in wind farms for commercial production of electric power are usually three-bladed and pointed into the wind by computer-controlled motors. These have tip speeds of up to six times the wind speed, high efficiency, and low torque ripple, which contribute to good reliability. The newer innovations have decreased the cost of producing electricity from wind 80% since 1980.

Sounds like you know a lot about wind turbines.

One question...when they go 'round, do they go Vrooosh, or Shrooosh??

[martinw]

Dear All,

Now this is a site that is worth a visit. It tells the truth about wind power, and what it contributes , in my country, towards electricity generation. Just scroll down a bit and you will see a graph and table telling us who actually is generating electricity and by which means. No Green spin, no Climate Change agenda, no politics at all....just the pure unvarnished truth...right now...

http://www.bmreports.com/bsp/bsp_home.htm

(Look for Generation by Fuel type)

Enjoy.

Best wishes,

Martin

[fizzissist]

Martinw,
What is CCGT?

[martinw]

Originally Posted by fizzissist Martinw, What is CCGT?

They are power stations running on Natural Gas. I think the GT part is Gas Turbine, but I do not know the difference between CCGT and OCGT.

Sorry for not being much help.

Best wishes,

Martin

[martinw]

Found it!

Combined Cycle Gas Turbine and Open Cycle Gas Turbine

Martin

[bwprice100]

Originally Posted by Miller123 The working of these wind turbines is simple. When the sun heats up the air above the land, it expands and rises, giving its place to the cooler and heavier air above. This makes the wind to blow and over the airfoil shaped blades of the turbine causing them to turn. The blades are connected to a drive shaft that turns an electric generator to produce electricity. The wind turbines are as much dependent on sun shining as it is dependent on the blowing wind. This is so because the blowing wind is the result of the sun shining.

Doesn't it also depend on the earth rotating?

[fizzissist]

Originally Posted by bwprice100 Doesn't it also depend on the earth rotating?

If there were an external force, or resistence to our atmosphere, then absolutely. Problem is, the wind would then be REALLY, REALLY strong...

[martinw]

Fizz,

More stuff from the neta site...

I think INTFR is a load of nuclear generated electricity coming from undersea cables from France. The French generate about 80% of their electricity in that way, and if they have some to spare, it makes sense for Great Britain to buy it. The wind turbines are a bit weedy, are they not?

Best wishes,

Martin

[Besmer herry]

Global warming and its increasing effects have shed light on the many global environmental issues. Our planet's fragile ecosystem is under attack on many fronts as a result of industrialization and our growing transportation infrastructure. Worldwide change is needed in order to avert catastrophe, the development of alternative energy sources is absolutely necessary. The articles listed below explore environmental issues.




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[handlewanker]

I've yet to actually see a wind turbine, heard about them, but never actually seen one, come to think of it I've never actually seen a real live jumping about kangaroo either,...... well not in Melbourne that is, city/urban dwelling does deny you the world of nature, same goes for the wind turbine thingy's, no land around our way suitable for any turbinising on a scale that would make it feasible.

The more I read about wind turbines the more I get the impression it's one corridor fraught with problems.

From a design point of view, who would design a device that required a massive gearbox to speed the generator up to make viable power, and only has 15 years usefull life, max?

Apparently the "experts" with all their high tech knowledge thought it was the way to go, but as you lose most of your gains in the friction from gearing and their lubrication it's a wonder they haven't seen the light and redesigned.

For my money I would favour anything that involved tidal power, be it from water turbines, wave generators, or rise and fall in tidal ponds etc, sea related energy sources are guaranteed a constant reaction process, but wind power can go for days without any wind and then only enough to stir the daisys.

Sun power is dependant on lack of cloud cover, but the sea in any form is constantly in motion, 24/7 and that represents constant energy for free.

To give an example of sea power, try standing up against a tidal flow 3 to 4 MPH waist deep on the sea shore, and then compare it to a 30 or 40 MPH wind, if and when it ever blows that strong for any period of time, no comparison.

Someone suggested that a supertanker convoy could be "driven" through the ocean by having a deep "sail" under water attached to a cable to harness the various tidal flows without using any on board oil burning machinery, but a bank of batteries to move the ships from one tidal flow source to another, might take more time to get there, but hey, tidal flow power is for nix, just allow for the flow time, but then again pigs might fly too.
Ian.

PS, I just remembered, when I was a boy there was a windmill on the farm we camped on, that pumped water for the live stock, so wind power probably has been doing more than we realise, especially in Holland etc, very debateable.