Assumption Worlds 2008 Thailand

Assumption Worlds - 28th World Universities Debating Championship

April 28th, 2009 by admin

Wind power is proportional to the cube of the wind’s speed, so relatively minor increases in speed result in large changes in potential output. Individual turbines vary in size and power output from a few hundred watts to two or three megawatts (as a guide, a typical domestic system would be 2.5 - 6 kilowatts, depending on the location and size of the home).

Uses range from very small turbines supplying energy for battery charging systems (e.g. on boats or in homes), to turbines grouped on wind farms supplying electricity to the grid.

In Saddleworth, near Greater Manchester, an eco-war about wind turbines is waging. United Utilities want to build seven 350 foot wind turbines.

These will generate enough power to supply the average electricity needs of 8,500 homes in the local area. This wind farm is not situated out to sea but in the picturesque hills of the Saddleworth Moors and would be visible for miles around. Government targets state that 10% of the UK’s energy should be supplied by renewable resources by 2010 and developments like the Saddleworth Moor turbines would contribute towards that total. Leading environmentalists from across the country have previously convened in Saddleworth for the first ever National Forum opposing the creation of wind farms on rural beauty spots.

World renowned TV botanist, Professor David Bellamy, joined former Downing Street press secretary, Sir Bernard Ingham and hundreds of activists at the National Wind Farm Group Conference. There were a total of representatives from over 50 environmental groups from across the country attending this event. It aimed to raise awareness about the perceived dangers of wind farms and bring environmental groups closer together in their fight against the government.

The Saddleworth Moors Action Group says the turbines would have a negative impact on a unique landscape. The group also insist their campaign is not prompted by “not in my backyard” sentiments, but through a genuine desire to preserve the character of the local area.

One could argue that the government is not bothered about the environment then they are continually financing the construction of coal fired power stations in the third world and building more airports and more motorways in Britain? As tensions are mounting in Iran and Nigeria leading to increased oil prices, is now not the ideal time to exploit wind power both on land and at sea via grants to companies? With labour slipping up at the local elections in 05/06 and the Conservatives pushing the eco argument, is not in Labours interest to follow the Conservatives lead and not to pay lip service to wind farms as they currently do?

OR

Will the people that have to live near wind farms and see the things every day change their minds and believe that wind farms form a concerted effort to save the environment or just another commercial money making scheme for the companies involved?

See renewable energy companies in GuideMeGreen’s green directory

Davinos Greeno
http://www.articlesbase.com/environment-articles/the-wind-farm-debate-84552.html

5 Responses to “The Wind Farm Debate”

boobinhard Says:

Wind Turbines on Wind Farms?
Is there any reason they would turn off wind turbines in a wind field due to efficiency? I know the fans are braked if winds exceed a certain velocity and possibly due to energy needs they may stop some of them. However in a debate with a friend he argued that it would be more efficient and produce more energy to have fewer running versus more. This is counter intuitive can someone shead some light on this topic. I refuse to accept my friend logic.
In response to answer number two…its a wind mill u dont use energy to run it u gain…so y would u ever want them not moving or "shut them down.'' Even if u had 1 rotation per hour u'd be gaining more energy than 0 rotations. Further my friend argued that the first turbine in a row would run slower if the one behind it were running. This I know is false. And my friend has no reliable source or literature to prove his point.

magiscoder Says:

I don't agree with your friend either. Does he have a reputable source or a decent explanation backing this up?
References :

zspace101 Says:

your right and he is right. While having more turning will produce more power the are set up so that the turbines in form recive a unbroke flow of air and the ones beind the first row recive more and more tubulent air which makes the ones close to the direction the wind is facing more effecent. So on a low use day its better ot shut down ones in the middle and let the far back ones and the far front ones run (the ones in the back get a solid air flow because the air reaglins over the distace it travels)
References :

linlyons Says:

i think what answer #2 was trying to get at is that, if the wind farm was really poorly set up, then it is possible that stopping one would be beneficial.
for example.
if a 1 megawatt turbine was placed directly behind a 10 Kw generator, and the airflow from the smaller generator caused the larger one to only produce 800 Kw, then feathering the blades (ie rotating them to the 90 degree position so they didn't turn) would improve the airflow to the larger turbine.

but would this ever happen?
possibly.
suppose they were positioned such that 99% of the time, they both worked well. But 1% of the time the wind direction changed, so that the smaller impacted the airflow to the larger. In that case, they were probably positioned well, and there would be an arguable case for feathering the smaller turbine.

i didn't know they were braked. i did know that the blades could be rotated so the wind wouldn't catch them.
References :

Irv S Says:

A turbine field will be designed for a certain optimum wind direction and speed.
Winds differing from this optimum might well cause some turbines to fall into the 'shadow` of others and a turbine close behind another might, under extremely bad circumstances form a 'bow wave` that would interfere with the leading turbine.
(It's not likely though).
What is being neglected here is maintenance.
A turbine has a limited life. Running it inefficiently
is wasteful.
References :

Leave a Reply