Pro's and Con's of wind turbines

Until the issue of industrial scale electricity storage is solved renewables are not a practical solution to our energy concerns. Read the links in my sig for some insight into the impacts of wind and renewables.
 
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PlacidCasual said:
Until the issue of industrial scale electricity storage is solved renewables are not a practical solution to our energy concerns. Read the links in my sig for some insight into the impacts of wind and renewables.
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Agree with this!

For those that are genuinely interested in this, take a look at the Highview project, quite an interesting idea!
 
apparently,. where we are weve been getting different fish in our waters and some beleive its due to the wind turbines warming the water up, but how true that is i dont know
 
Jonnybmac said:
apparently,. where we are weve been getting different fish in our waters and some beleive its due to the wind turbines warming the water up, but how true that is i dont know
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Hang on, I'll ask my cat.







Cat says that's ridiculous :o

and I'll just confirm that cat is once again, correct.
heat capacity of an ocean is almost infinite.
 
PlacidCasual said:
Until the issue of industrial scale electricity storage is solved renewables are not a practical solution to our energy concerns. Read the links in my sig for some insight into the impacts of wind and renewables.
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I've often wondered if more dynamic pricing would help alter our energy demand to better fit the fluctuations in power supply. I know some people (mostly those who use storage heaters) are on energy tariffs like Energy7 with cheaper prices at night, but maybe an extension to this could allow some tasks (e.g. charging an electric vehicle) to be optimized for when energy is most plentiful vs demand.
 
wilber said:
No it is not but it is predicted fairly well. A wind farm would not be located in such an area as the idea is to produce electricity to the grid.

Off grid areas would be using diesel motors anyway. Read the thread and see the evidence of this i posted regarding the diamond mines in Canada, building 3 turbines has reduced the diesel they use considerably.... the whole point of renewable's!

Here is the link: http://www.diavik.ca/ENG/ouroperations/565_wind_farm.asp

It seem to me your looking at it from the wrong angle, we put renewables in to save on the use of fossil fuels.




Seeing as you helped design the gearing i'm guessing you have access to the amounts of energy a black start consumes, i would be interested in this figure.

They are Incredibly uncommon in the UK though. Which I stated earlier in the thread and which was my point at the time as it was being claimed that it was the norm.
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Nope. I had access to the forces produced. Don't have any figures on energy consumed. I imagine it could be calculated. Obviously it would vary for each design of wind turbine. You'd need things like the mass of the blades. Second moment of inertia. Efficiency of the engine. Frictional loads to overcome. Etc.

Regarding them not being able to be used in gales etc redvgreen, each design has optimum rotational speeds. This can be maintained through different wind speeds by modifying the pitch of the blades. They can only be changed to a certain extent.
If they rotate too quickly however like anything it will cause damage to the generator within, mechanical parts within and to the structures themselves as the forces encountered exceed design limits. braking can be used to slow them down if the wind speed is too high, it can be done mechanically or electrically.
 
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