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Originally posted by Asktheanimals
Bird and bat deaths due wind turbines is very much overblown.
Looks like windows and powerlines are thousands of times more deadly.
I think he's got a great idea and why not just put a wire mesh cone on the front so birds can't possibly fly in to and destroy the turbines blades?
Originally posted by Blackmarketeer
I have a small-ish AirX turbine, which are sold in marine or RV shops, or if you're out in the country in Feed stores. It makes about 400 watts, give or take, and is perfect for small outbuildings. I use to power outdoor lighting and a cistern pump, all designed to run on DC so I wouldn't have to bother with inverters/etc.
My next goal is to move up to a bigger turbine, and use it supplement my home's electrical needs. Luckily I have the space to erect a larger wind turbine, but it would be nice to use something a little more compact, like this gentleman's design. It can be costly (about $15,000) for a 2kW/hr wind turbine, the amortization rate is still longer than I'd like, but the beauty of it would be greater independence from the electrical utility AND knowing if/when things go south, I can switch to my own power source to run essential household needs. What I do like about this guy's design is that it looks like, for the same amount of space as a typical, residential style AirX-type wind turbine, you could get one that generates a lot more power.
Originally posted by Philippines
Originally posted by Asktheanimals
***snips***
Looks like windows and powerlines are thousands of times more deadly.
I think he's got a great idea and why not just put a wire mesh cone on the front so birds can't possibly fly in to and destroy the turbines blades?
You are correct about turbines not causing many bird deaths, and only if the proper due diligence is done. Here in the mountains for example, an environmental impact study needs to be done for at least a year to test wind conditions, bird migratory paths, and other impacts. Point being that if you build a windmill in a location as a bird migratory path the windmill stands a very good chance to kill many birds, seasonally.
As for your point about putting shielding around the blades, sure, it is possible. But on some of these turbines that are big enough to create kilowatts of power you are looking at rotor diameters of 80 meters, which would be a HUGE screen and quite expensive.
Originally posted by TheLieWeLive
If we were to have wind turbines we would have had them decades ago and by now everyone would have one. We will be dependent on oil based energy as long as there is a profit to be made.
The four mounted turbines are generating more than 4.5 times as much energy than if the turbines were standing alone, according to data collected by Cleveland State University.
In a quarterly technical performance report submitted to the U.S. Department of Energy on July 30, Rashidi reported that at a wind speed of 11 miles per hour the tower's four turbines generated 1,288 watts of energy, compared to a combined 200 watts of energy that would be generated by four stand-alone turbines, as calculated by turbine manufacturer.
A wind speed of 18 miles per hour generated 6,143 watts of energy from CSU's tower structure, compared to 1,412 from four stand-alone turbines. The report said the results, from April 1 through June 30, show the average electrical power generated by the spiral turbine was 4.64 times as much as conventional turbines.
"That is what the spiral does to the wind," Rashidi said. "It funnels more air."
The turbine is expected to generate about 40,000 kilowatt-hours per year, roughly the amount of energy needed to power four homes, Indians officials said. The ballpark uses about 17 million kilowatt-hours a year.
Originally posted by Asktheanimals
Bird and bat deaths due wind turbines is very much overblown.
Looks like windows and powerlines are thousands of times more deadly.
I think he's got a great idea and why not just put a wire mesh cone on the front so birds can't possibly fly in to and destroy the turbines blades?
Originally posted by Asktheanimals
Bird and bat deaths due wind turbines is very much overblown.
Looks like windows and powerlines are thousands of times more deadly.
I think he's got a great idea and why not just put a wire mesh cone on the front so birds can't possibly fly in to and destroy the turbines blades?
I'm not doubting the relative harmlessness of wind turbines one bit but your use if this graphic is misleading. According to the chart, buildings/windows are account for three to four orders of magnitude more fatalities than turbines per 10,000, yet how many more buildings/windows are there than wind turbines?
Originally posted by butcherguy
reply to post by john_bmth
I'm not doubting the relative harmlessness of wind turbines one bit but your use if this graphic is misleading. According to the chart, buildings/windows are account for three to four orders of magnitude more fatalities than turbines per 10,000, yet how many more buildings/windows are there than wind turbines?
You gave me an idea.
We should mount large three-bladed wind generators adjacent to large buildings to chop up the birds and protect the buildings. Think how much money it would save in replacement glass.
Originally posted by Moneyisgodlifeisrented
reply to post by john_bmth
How many Tall enough building are there compared to windmills and then you may be averaging the same.
Office buildings mostly made of glass for views is what is the bigger factor for bird building deaths.
Originally posted by Moneyisgodlifeisrented
reply to post by john_bmth
How many Tall enough building are there compared to windmills and then you may be averaging the same.
Office buildings mostly made of glass for views is what is the bigger factor for bird building deaths.