Seriuosly big windgennie

Appleyard

Appleyard

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Seriuosly big windgennie

These were on the quayside in A.Euphemia early last month waiting to be transported up the island and installed . Very inpressive ..each blade is 48 m long and 2.7 m dia at the root .
Spring07006.jpg
 
Re: Seriuosly big windgennie

No, but I would like to...........................

I often wonder just how really viable these turbines are. I.e. power output and availability of power (being dependant upon wind blowing when power is needed)

Cameron
 
Re: Seriuosly big windgennie

Imagine the forces at work trying to topple the tower when that thing starts turning. It must be a real feat of engineering and cost a fortune.

I know a chap who made a wind turbine from scap metal and an old car alternator. Works a treat and low tech, so cheap to maintainand fix.
 
Re: Seriuosly big windgennie

You're right, they don't, but as a feel good gesture the Greens like them, bio diesel is the same - there's more fuel in tank of the tractor pulling than is in the load of leaves and stalks and berries on the trailer!
 
Re: Seriuosly big windgennie

The financial return is not good. In fact
almost as poor as chicken sh*t
gencost_barchart.jpg


They fail to meet their required capacities over the longer term
dti+windycopy.jpg


The visual effect in the landscape is perhaps a personal matter
but the 24 hour noise is diabolical for those living in the affected area.
 
Re: Seriuosly big windgennie

A good point but think about it James, getting the raw materials to the processing plant is only a small part of the energy input into the biodiesel production system, and it fails at the first hurdle. A way to make it work is to use energy from another source, arranging fields in a valley with gravity doing the delivery work on low friction railway trucks is a start and some implementations have been successful but locations like that are few and far between, even then you have to smelt some steel to make rails etc. The whole "renewable engergy" business is a bit suspect in respect of an energy audit. For example electric cars charged from the mains with electricity generated from gas or oil or coal are about 30% efficent, petrol/diesel cars about 65%.

The conclusion is that burning fuel efficently at the point of use is the best way reduce overall consumption and hence pollution - the decision is then: do we need to burn the stuff at all - what benefit is it giving.

And none of the above has much to do with global warming.
 
Re: Seriuosly big windgennie

[ QUOTE ]
The whole "renewable engergy" business is a bit suspect in respect of an energy audit. For example electric cars charged from the mains with electricity generated from gas or oil or coal are about 30% efficent, petrol/diesel cars about 65%.

[/ QUOTE ]


I agree that the present generation "renewable energy" business is a joke. Current biofuels, electric cars, wind power,probably don't even break even never mind saving oil and thus CO2. To me their worst aspect is that they discredit genuine concerns, confuse the gullible and encourage people to belive thay are being 'green' when they are not.


BUT. Clean carbon-neutral energy is theoretically possible by a number of routes. For example I mentioned a new generation of biofuels here recently and the discussion spun off into totally irrelevant criticism of present-day biofuels. There was no understanding of the potential because the issue has become blurred by the present politically expedient but practically irrelevant systems.
 
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