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Wind farms are warming the earth, researchers say
Fox News ^ | April 30, 2012 | Eric Niller

Posted on 04/30/2012 6:27:28 PM PDT by Kaslin

New research finds that wind farms actually warm up the surface of the land underneath them during the night, a phenomenon that could put a damper on efforts to expand wind energy as a green energy solution.

Researchers used satellite data from 2003 to 2011 to examine surface temperatures across as wide swath of west Texas, which has built four of the world's largest wind farms. The data showed a direct correlation between night-time temperatures increases of 0.72 degrees C (1.3 degrees F) and the placement of the farms.

"Given the present installed capacity and the projected growth in installation of wind farms across the world, I feel that wind farms, if spatially large enough, might have noticeable impacts on local to regional meteorology," Liming Zhou, associate professor at the State University of New York, Albany and author of the paper published April 29 in Nature Climate Change said in an e-mail to Discovery News.

(Excerpt) Read more at foxnews.com ...


TOPICS: Culture/Society; Extended News; Philosophy
KEYWORDS: climatechange; globalwarming; globalwarminghoax

1 posted on 04/30/2012 6:27:32 PM PDT by Kaslin
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To: Kaslin
Come on!

Warming the earth?

I suppose one could claim that my home heating system is warming the earth, or that when I smoke a cigar I am warming the earth.

But the earth knows.

ML/NJ

2 posted on 04/30/2012 6:33:06 PM PDT by ml/nj
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To: Kaslin

Questionable.

Turbines generally extract energy from the fluid passing through them, cooling it.


3 posted on 04/30/2012 6:33:46 PM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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To: Kaslin

just proved researchers and experts don ‘t know jack.....


4 posted on 04/30/2012 6:33:54 PM PDT by goat granny
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To: Kaslin

Sounds like a 6th grade science project.


5 posted on 04/30/2012 6:35:18 PM PDT by No One Special
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To: Kaslin

Unless the first law of thermodynamics has been repealed (conservation of energy), even if there may be some localized increase in temperature where the wind turbines are, there would have to be some equivalent amount of cooling downstream.

If anything the net effect should be some very slight cooling, since some of the kinetic energy of the wind is transformed into electric energy by the wind turbines. Eventually though even the electric energy generated by the wind will be reconverted to heat as the electricity generated runs fridges and ovens and laptops and...

Bottom line there should be no global temperature effect by the operation of wind turbines.


6 posted on 04/30/2012 6:38:12 PM PDT by aquila48
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To: Kaslin

As if we can actually change the temperature of the planet with a bunch of fans!

The arrogance of man is breath taking..... the ignorance is painful.


7 posted on 04/30/2012 6:39:54 PM PDT by Gator113 (***YOU GAVE it to Obama. I would have voted for NEWT.~Just livin' life, my way~)
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To: DuncanWaring

Actually, if I think about it, it does make sense. Cold air come out of an air conditioner if you are in front of it, but when you are outside you feel hot air coming out. At least that is how I see it


8 posted on 04/30/2012 6:46:03 PM PDT by Kaslin (Acronym for OBAMA: One Big Ass Mistake America)
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To: DuncanWaring
Turbines generally extract energy from the fluid passing through them, cooling it.

Definitely true for compressible fluids like air, that's why they install air dryers on compressed air lines feeding tools like impact wrenches lest they literally freeze up.

Not so sure that it works for incompressible fluids like water (the tailraces below the turbines at Boulder dam would fill with ice bergs!). I think the power extracted shows up as reduced kinetic energy (static and dynamic head are reduced in proportion to the extracted power).

Regards,
GtG

9 posted on 04/30/2012 6:47:34 PM PDT by Gandalf_The_Gray (I live in my own little world, I like it 'cuz they know me here.)
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To: Kaslin

Take a look at what this Wind Turbine does.

http://www.youtube.com/watch?v=jwVz5hdAMGU


10 posted on 04/30/2012 6:54:59 PM PDT by HighWheeler
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To: Kaslin

I think in this case that “Warming the Earth” really means “Warming the Dirt”


11 posted on 04/30/2012 7:13:25 PM PDT by palmer (Jim, please bill me 50 cents for this completely useless post)
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To: Kaslin

12 posted on 04/30/2012 7:28:55 PM PDT by Vendome (Don't take life so seriously, you won't live through it anyway)
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To: Ernest_at_the_Beach; Rurudyne; steelyourfaith; Tolerance Sucks Rocks; xcamel; AdmSmith; ...

“If pro is the opposite of con, what’s the opposite of progress?” — Will Rogers

Thanks Kaslin.


13 posted on 04/30/2012 7:54:48 PM PDT by SunkenCiv (FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
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To: aquila48
What the turbines take out of the air is kinetic energy - they slow it down, probably introduce a little more entropy and turbulence into it.

So if you think about it, under normal conditions the atmosphere probably cools more rapidly than the land underneath it - radiative cooling off into space. So a wind blowing across the land would be cooler than the ground, and thus extract heat from the ground.

Now we have huge turbine farms. They are extracting kinetic energy, slowing the airflow down. This means less air mass per unit time blowing over the ground, less energy transfer. The ground retains more of its daytime heat.

Well, that's a working theory anyway. Could probably be tested fairly easily with anemometers and thermometers.

14 posted on 04/30/2012 8:11:06 PM PDT by ThunderSleeps (Stop obama now! Stop the hussein - insane agenda!)
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To: Kaslin

They distort the jetstream is my latest theory.. talk about man-made or man-assisted global varming. wow. Ted kennedy knew if they built wind farms off cape cod , we were all toast.

good thing the Pacific NW has backup.. ;-]

meanwhile

BPA orders NW wind farms to curtail production
http://www.sfgate.com/cgi-bin/article.cgi?f=/n/a/2012/04/30/state/n131505D31.DTL

Portland, Ore. (AP) — The Bonneville Power Administration twice ordered Pacific Northwest wind farms to cut production in recent days because it has a surplus of power from hydroelectric dams.

The agency, which manages much of the power grid in the Northwest, confirmed it issued the orders during the early morning hours of Sunday and Monday, when demand is low.

The action rekindles a dispute from last year, when the agency curtailed wind turbines because the water from a large mountain snowpack left the region with more hydropower than the electrical grid could handle.


15 posted on 04/30/2012 8:11:18 PM PDT by NormsRevenge (Semper Fi)
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To: ThunderSleeps

I agree there may be some local increase in temperature, but the kinetic energy that the wind lost in the turbines would have eventually been lost downstream, thus decreasing the temperature somewhere downstream.

My point is that there is no net energy input into the earth as a whole due to the wind farms, therefore no “global” warming or cooling as a result.


16 posted on 04/30/2012 8:27:27 PM PDT by aquila48
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To: Kaslin

Heat causes wind.
Wind allows the heat to dissipate
Walls of Wind Generators slow down the wind, allowing additional heat build up.
It is so simple a concept that the “So called” Intelligentsia can’t grasp that simple concept.

Additionally, it kills birds who can’t see the propellers coming at them at 100 + mph.

Additionally, metal fatigues (always/eventually) and these things are monstrous and fail. In the process a broken propeller, takes out one or more of the others Million Dollar generators next to them.

It must be great to be “Smart” or (Think) you are “Smart”.


17 posted on 04/30/2012 8:33:44 PM PDT by jongaltsr
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To: aquila48
Agreed, no net energy gain. They don't generate energy (like say combustion converting stored chemical energy, nuclear decay, etc.) That heat the faster moving wind would've carried away doesn't get dissipated downstream. So somewhere it is cooler and calmer.

Hmm, slower moving, cooler air probably increases local relative humidity, picks up less moisture from the surface... Less atmospheric moisture means more sunlight striking the ground, more surface warming... Or maybe not. Maybe higher relative humidity is still enough to form water droplets and block/absorb sunlight. Complex system. Don't ever let climate "scientists" tell you they have it all figured out either. ;-)

Anyway, yeah I believe it is probably locally warmer there, cooler someplace else. But global warming? Ha. Localized phenomena around the wind farms.

18 posted on 04/30/2012 8:46:56 PM PDT by ThunderSleeps (Stop obama now! Stop the hussein - insane agenda!)
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To: Kaslin

I wonder what the effect is over water.


19 posted on 04/30/2012 9:03:48 PM PDT by Mike Darancette (The longer you hold tiger by the tail, the hungrier he gets.)
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To: ThunderSleeps

Bottom line - Not worth losing sleep over, like all the other global warming crap.


20 posted on 04/30/2012 9:30:10 PM PDT by aquila48
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To: aquila48
but the kinetic energy that the wind lost in the turbines would have eventually been lost downstream, thus decreasing the temperature somewhere downstream.

The kinetic energy lost downstream turns into heat.

21 posted on 05/01/2012 8:15:53 AM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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To: ml/nj
== I suppose one could claim that my home heating system is warming the earth, or that when I smoke a cigar I am warming the earth.

Even a loon town in the NE area several years ago banned their outdoor
Christmas lights for the same reason.

Go figure. But H. L. Mencken (1880 – 1956), journalist – magazine editor once said:

"[The news media] is a device for making the ignorant more ignorant and the crazy crazier". He went on to say:

"The whole aim of practical politics is to keep the populace alarmed (and hence clamorous to be led to safety) by menacing it with an endless series of hobgoblins, all of them imaginary".

For example:


22 posted on 05/01/2012 9:10:26 AM PDT by QT3.14 (Proud European-American Honkey)
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To: DuncanWaring
Turbines generally extract energy from the fluid passing through them, cooling it.

A "cooling fan", as used on many types of equipment, adds energy to the fluid flowing through it, warming it, but nonetheless helps to cool equipment by increasing the effectiveness of heat transfer across a thermal gradient.

The atmosphere of the planet loses a lot of heat to space. How effectively heat gets carried from the surface of the planet and out into space varies depending upon many factors. Conceptually, things which reduce the intermixing of different-temperature volumes of air would, all else being equal, likely reduce the effectiveness of the heat transfer. Of course, there are so many interacting feedback mechanisms that it would be impossible to honestly identify the exact balance of effects caused by any particular action.

23 posted on 05/01/2012 3:43:24 PM PDT by supercat (Renounce Covetousness.)
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To: supercat

Yes, a cooling fan adds energy to a fluid, but that’s not the same as a turbine, which extracts energy from a fluid.


24 posted on 05/01/2012 4:43:21 PM PDT by DuncanWaring (The Lord uses the good ones; the bad ones use the Lord.)
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