Topics of concern

What are the costs of sustainable development, and how long will it take to achieve?

admin — Thu, 29 Oct 2009 19:12:26 +0000

I need to include these 2 components in a 1-pg report . . . I also need to discuss these topics:

- who might oppose sustainable development ;
- what might prove to be difficult to change .

Also , by sustainable development , I mean it regards the environment~

I apologize if this is in the wrong category . Thank you in advance for your help .

Not the wrong category, just such a huge and obscure question. Many people have written entire books to answer that question. Maybe you could narrow it down a bit.

How does wind energy work? I know a little, but does anyone have a clearer idea?

admin — Thu, 29 Oct 2009 19:12:20 +0000

I’ve tried some internet sites, but none of them have given me any real idea of how it works except "It turns the blades and generates electricity"

I am really interested in Wind energy, and how it works. Anyone have a somewhat clearer explanation for me? Thanks.

Wind spins turbines which powers a generator. That’s the easy way to explain it. But if you want to know more in detail:

"Wind power is the conversion of wind energy into a useful form, such as electricity, using wind turbines. At the end of 2007, worldwide capacity of wind-powered generators was 94.1 gigawatts.[1] Although wind currently produces about 1% of world-wide electricity use,[2] it accounts for approximately 19% of electricity production in Denmark, 9% in Spain and Portugal, and 6% in Germany and the Republic of Ireland (2007 data). Globally, wind power generation increased more than fivefold between 2000 and 2007.[1]

Most wind power is generated in the form of electricity. Large scale wind farms are connected to electrical grids. Individual turbines can provide electricity to isolated locations. In windmills, wind energy is used directly as mechanical energy for pumping water or grinding grain.

Wind energy is plentiful, renewable, widely distributed, clean, and reduces greenhouse gas emissions when it displaces fossil-fuel-derived electricity. The intermittency of wind seldom creates problems when using wind power to supply a low proportion of total demand. Where wind is to be used for a moderate fraction of demand, additional costs for compensation of intermittency are considered to be modest.[3]"

http://en.wikipedia.org/wiki/Wind_power

Hope that helps you.

How do you transport solar power tower energy to a building that is 4 kms away?

admin — Thu, 29 Oct 2009 19:12:15 +0000

And is an area of 1 km^2 for a solar power tower enough to produce energy for five houses? can you make an approximation of how much it could supply?

If you want the heat energy, consider tracking mirrors at the site and solar collectors on the houses. If you want electric energy, that area is enough to support a traditional steam turbine, much more cost-effective than photovoltaic. That area is about 15 times the area that Solar One used to generate 10 megawatts in the Mohave Desert, so it could supply a theoretical maximum of 150 megawatts during peak sunshine. That’s probably enough to match the demand of about 25,000 homes. Best bet would be to feed it to the electric power grid.

Did you hear the government thinks hydroelectric dams are not green power?

admin — Thu, 29 Oct 2009 19:12:07 +0000

Did you hear the government thinks hydroelectric dams are not green power?

90 percent of Washingtons Power is hydroelectric.

If by green, you mean does not hurt the environment, they are not.

Dams heat the water in the river, changing the environment for plants and fish.

but does that mean they can’t be improved.

What are the potential alternative energy solution that we can use to replace gasoline in the long run?

admin — Thu, 29 Oct 2009 19:12:01 +0000

This may sound ridiculous at this moment but we may need to face it sometime in the future , so what kind of alternative energy sources that we can tap into before we run out of gasoline? Do you think the oil companies or some other major corporations should really invest in such energy development since this is essential for the survival of our civilization.

Gerbil power works good.

“The 7 Myths of Alternative Energy”

admin — Thu, 29 Oct 2009 11:28:07 +0000

“The 7 Myths of Alternative Energy”
About this video

Time Magazine Senior Correspondent Michael Grunwald joins Clean Skies News to discuss his article in Foreign Policy Magazine, “The 7 Myths of Alternative Energy.” Grunwald says the U.S. needs to curb trends and use less, not jump right to zero emissions.

Duration : 0:9:44

Technorati Tags: carbon emissions, Clean Skies News, Michael Grunwald, oil, Power Generation, solar, Time Magazine, wind

What the most recent books on city sustainable development, experience of world cities?

admin — Tue, 27 Oct 2009 16:26:42 +0000

Sustainable development, city planning, experience of cities around the globe.

This is a very old literature. However, the "new classic" book is "The Spatial Economy" by Fujita, Krugman, and Venables. There is some mathematics in the book, but the basic principles can be understood, I think, if you ignore the math.

What kind of degree should I get to become a wind energy researcher?

admin — Tue, 27 Oct 2009 16:26:36 +0000

I want to major in a field that will pretty much guarantee me a research and development job in wind energy. I am not interested in any other forms of alternative energy, so a general renewable energy bachelor’s won’t do. Any help?

But you will still have to include renewable energy in your searches because it is part of the whole gamut of a still wider and unfolding field … and so you will have to include in your searches solar energy and natural resources as well because, after all, the whole purpose of harnessing wind energy is to produce electricity and to support engineering involved in designing and manufacturing wind-availing technologies.

Look to those schools located in the Mid-west and west coast — where the greatest wind forces are located — Kansas, Oklahoma, for example, and California — and find what degree programs they are founding and that are underway.

How can I power a couple small appliances using solar power?

admin — Tue, 27 Oct 2009 16:26:30 +0000

What would I need to power a small fan, some LED lights, ect in my home, without spending hundreds or thousands of dollers? How would I set it up? I think I would need a Solar Panel, a AC/DC converter or some kind, and a Battery?

Any Help! Thanks!

Look up solar solar power supplies, battery charger and solar charger on the Internet.Lots of good information there.

You will need to know how much current you will be drawing, the number of hours you will be using power, the rating of the power supply and the insolation ( this is spelled correctly) from insolation tables on the Internet.

On my playstation 3 instead of there being a green power light its a constant blue power light.What does this?

admin — Tue, 27 Oct 2009 16:26:22 +0000

When i turn the playstation 3 on it comes on as a blue power light. It never changes. Also when i place the playstation on stand-by mode there is no light and there should be a red one. The green and red lights have never showed up.

then i guess the lights are burt out already or something the blue light would be for a game a dvd that is in the PS3 call sony up and tell them or if it dont matter to you and its workin fine dont worrie about it