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Windfarms

Old 3rd Sep 2014, 08:56
  #141 (permalink)  
 
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That is pollution.

Mining companies are not allowed to do it, why should th greenies ?
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Old 3rd Sep 2014, 09:32
  #142 (permalink)  
 
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Facts ...

Wind turbines do not exceed 500ft AGL, pilots do not fly below 500 ft AGL in our fossil fuel powered machines, unless they are of the highly skilled and obstacle aware Ag variety. Any pilot whom gets in the way of said Turbines should therefore have :
A: Landed at the previous airstrip
B: conducted a precautionary landing prior to running into turbines
C: stayed at the pub regaling all the patrons of his flying prowess

just saying .....
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Old 3rd Sep 2014, 09:45
  #143 (permalink)  
 
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Jennifer Marohasy is just another of those right-wing climate sceptic nutters.

She peddles a mixture of ignorance and misinformation to the dimwitted.

The future is renewable energy. Wind farms make sense to me.
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Old 3rd Sep 2014, 09:51
  #144 (permalink)  
 
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Of course typical left wing greenie. Anyone with anything against your dripple is a nutter. Sorry sir the world is waking up to fools like your self. They don't work and take money away from projects that should receive it.
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Old 3rd Sep 2014, 09:54
  #145 (permalink)  
 
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Pete, I believe you show the symptoms of cognitive dissonance ...
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Old 3rd Sep 2014, 10:00
  #146 (permalink)  
 
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If your so so worries about climate change there is only one option. That's nuclear the quicker we do that the better.
So can anyone tell me why the snowy scheme had to pay the carbon tax when it's energy is the purest cleanest way to produce power and has the added benefit of supplying water to produce food via irrigation and water for all things. Why is the green moment so opposed to dams as we'll

Green on the outside red in the centre.
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Old 3rd Sep 2014, 10:16
  #147 (permalink)  
 
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yr right:
The turbines in WA or SA. Do they have lights in the tops of the shafts.
Every wind turbine I've seen, has a red light (or sometimes two) - otherwise known as hazard beacons - as required, per CASA regulations "Aerodrome Lighting, Chapter 12, Section 2 - Obstacle Lighting".

https://www.google.com.au/url?sa=t&r...74115972,d.c2E

Binghi - Your link to windfarm efficiency is a classic of cherry-picking out the parts that appeal to the argument. According to your map in your link, W.A. does not exist, and has no windfarms.
I'm not surprised - in my experience, most Eastern Staters have always considered that nothing exists West of the Nullarbor Plain - because NSW, VIC., and QLD., are the centre of the universe, around which Australia revolves.

You might want to advise the windfarm map website that W.A. is actually a real State, populated by 2.5M people, not just 2.5M 'roos - and we happen to have a total of 7 fully functioning windfarms, with more than 450MW capacity, that achieve a lot more than 30% efficiency (actually, there are 12 windfarms, counting all the smaller ones).

List of wind farms in Western Australia - Wikipedia, the free encyclopedia

A comprehensive overview of W.A. windfarms - http://ramblingsdc.net/Australia/WindWA.html

Last edited by onetrack; 3rd Sep 2014 at 10:50.
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Old 3rd Sep 2014, 10:20
  #148 (permalink)  
 
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yr right - Sorry, I'm still stuck on the puzzling question as to why 500 (or 900) tonnes of concrete in a wind turbine base, is a major disaster/hazard/problem?
Ever had a little think about the total tonnage of concrete that is poured into buildings, bridges, or foundations for a hundred other structures? - every day of the week??
Your average multi-storey carpark contains anywhere between 50,000 and 150,000 tonnes of concrete! Ever seen a carpark demolition job? You ought to watch a few more YooToob vids!
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Old 3rd Sep 2014, 10:34
  #149 (permalink)  
 
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One track I think you missed the point. It's just one of the things that are pushed under the bed
The turbines at crookwell DONT have lights on them. Casa on your side I think not
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Old 3rd Sep 2014, 10:40
  #150 (permalink)  
 
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Did you know that they had that amount of concrete in them. Others here didn't In fact they said I was full of shit however others here have said the same funny that. Your have two ears one mouth some people should learn why that is
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Old 3rd Sep 2014, 11:03
  #151 (permalink)  
 
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so when one turbine falls over, catches fire, or sheds a blade or 3, who cleans up the mess? from the dead turbines i have seen, its not the constructor, or the electricity company.. its the property owner... or no one.
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Old 3rd Sep 2014, 11:08
  #152 (permalink)  
 
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I heard an interview today with the local member down Canberrra way. Said there were plans for 1400...that's right 1400 wind turbines in his electorate in the area Canberra/Yass/Collector. So many on the outskirts of Collector (300?) that property values had plummeted and retiree's lost thee retirement investment.
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Old 3rd Sep 2014, 11:09
  #153 (permalink)  
 
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Others here didn't In fact they said I was full of shit
Well, with comments such as the following, I can understand that point of view.

Even on still days they take current from the grid to turn the blades so they don't break
Why would a wind turbine take current from the grid, to continue their rotation?
What is going to break on a wind turbine when it stops turning on a windless day??
Does this mean that you can't stop any prop-powered aircraft engine in case something breaks, when it's stopped??

FYI - I've just spent a restful 3 days on Rottnest Island. Rottnest has a wind turbine (real close to an airstrip, too! ).
That turbine provides quite a substantial amount of additional power (37%) for the people of Rottnest. Never heard anyone raise even the slightest complaint about it. It's less than a km from a lot of the housing there, too (350M, in fact).

What was even more surprising is that, yesterday - unusually for Rottnest (where the wind blows strongly almost every day) - the wind stopped completely, it was dead calm.
The Rottnest wind turbine actually stopped turning for half an hour - and the blades never fell off it!!

I saw this with my own eyes!! - and I'll swear that fact on a stack of Bibles, yer honour!
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Old 3rd Sep 2014, 11:27
  #154 (permalink)  
 
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Up-into-the-air

Thanks for the post. The only bit of Yr rights discussion I was questioning
was the bit where he said greenhouse gasses from burnt fossil fuels that Australia exports are slated to Australia's total, not China, India or Japan's total.


OneTrack
"puzzling question as to why 500 (or 900) tonnes of concrete in a wind turbine base, is a major disaster/hazard/problem ?"

Concrete doesn't last forever and gradually breaks down and leaches into the earth.

And why shouldn't they clean it up and remove it ?
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Old 3rd Sep 2014, 14:18
  #155 (permalink)  
 
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500N - Concrete is basically inert and doesn't break down for hundreds of years at the minimum. What happens to concrete when it fails, is the reinforcing bar corrodes, the growth of the corrosion produces expansion stresses, and the concrete fractures.
It needs moisture ingress for this to happen, and properly constructed concrete structures are designed to stop moisture ingress into the reinforcing bar.

There are still tens of thousands of abandoned concrete structures, such as WW2 fortifications, that pose no threat to anyone. Concrete is 100% recyclable and the reinforcing bar can be recovered and smelted into new rebar.

End of life recycling

I agree that the windfarms should have environmental bonds posted, to cover cleanup costs when they are finally abandoned.
Currently, EPA approvals for windfarms outline cleanup guidelines, and the lease agreements with landowners normally outline precise cleanup procedures upon the termination of the project.
However, it's not like there's massive costs involved, nor are there any contentious/dangerous materials involved in abandoned windfarm residues.

We have an abandoned windfarm here in W.A. (Salmon Beach windfarm), it was built in 1987 and the turbines reached their designed lifespan after 13 yrs, and they were replaced by superior designs in another position.
Urban encroachment was another reason for the closure of the Salmon Beach windfarm.

The Salmon Beach windfarm was a total success at the end of the 13 yrs, despite the fact it used early-design, W.A.-made wind turbines.
The abandoned windfarm site was cleaned up according to the requirements of the Clean Energy Council, and no-one has complained about the site, or any potential residual health hazards emanating from it - because there are none. The old windfarm site is now actually a tourist trail.

Abandoned windfarms, cleaned up to the regulatory standards, pose no threat to anyone - unlike the 40% of Australian homes and buildings that still contain sizeable amounts of asbestos.
If you need something to worry about, worry about that asbestos - not harmless concrete foundations of abandoned windfarms - which can be 100% recycled with ease, anytime it is so desired.

Fact sheet - Decommissioning Wind Turbines
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Old 3rd Sep 2014, 20:27
  #156 (permalink)  
 
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One track. Do you understand any thing about stresses' on the blades. Do you have any engineering knowledge. Then you can explain to me why on a perfectly still day the blades are turning. May be it's Magic or my eyes need testing. Or maybe they take power form the grid and turn the blade to relieve the stresses in the blades.
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Old 3rd Sep 2014, 20:42
  #157 (permalink)  
 
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Yr right, you must know different wind farms than me. On still days I see lots of stationary blades on major windfarms. Nothing turning them at all, stopped completely. They also stop them on windy days for maintenance.
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Old 3rd Sep 2014, 21:02
  #158 (permalink)  
 
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Yr right.

I'll go with Bob on this one, the blades don't always turn.
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Old 3rd Sep 2014, 21:10
  #159 (permalink)  
 
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A diversion. My pet hate in this whole debate is the term "renewable energy." There is no such thing. All energy in the universe was created 14.8 billion years ago (approximately).
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Old 3rd Sep 2014, 21:24
  #160 (permalink)  
 
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Then you can explain to me why on a perfectly still day the blades are turning.
Probably because at 300 or 400 ft it's not perfectly still. Anyone who's done much flying knows that ground conditions often are not much of an indication of what's going on aloft.
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