02 Jul 2010 @ 11:54 AM 
Posion Oak asked:


Ok I was reading on how to make a solar cell and it said that basically all you do is heat a half sheet of copper flashing, heat it, and set it in the sun and it produces energy. I think when you use a potato to power a light bulb you use copper also, so what is in copper that does this
oh yeah I think we learnined that in science class a few months ago ^_X
Too Short I live HERE in the U.S. I live in Philadelphia

Amy
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Last Edit: 02 Jul 2010 @ 11 54 AM

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Marty asked:


Ok so if I have a 12 volt battery that has 26 amps per hour and lasts for 20 hours, that means that the total output of watts is 312 and the battery can give out 312 watts for 20 hours long?

If what i said is right, that means the battery has a total output of 6,240 watts but its max output at one time is 312 watts?

Also if a tv has
Power: AC 120 V
Power Consumption Operational: 230 Watt

does that mean that the battery could run the tv for about 20 hours because the battery has an output of 312 watts while the tv needs only 230 watts?

Thanks for any help. this all sounds right to me, i just want to make sure with someone that knows about this stuff. because i am looking up how to make a solar rechargable battery as a project with a battery and solar panels. i’ve never done any of this stuff, but here is to hoping.
well i was looking at batteries here,

http://store.altenergystore.com/Batteries/Batteries-Sealed-Agm/c436/sort/5a/page/1/

so what would i need to run the tv for about 3 hours (if you dont mind clicking on the link and browsing through them)
In response to tinkertailorcandlestickmaker
didnt use the the data from my actual tv but from one that i could find with a high requirement of power.

My actual tv says its 125V or 235W or 3A or 60Hzand im not sure which one to use to figure it out so i chose a tv with higher requirements. my Tv is a 51inch rear projection tv
One more question (i know im asking alot)
is there something i can get that would let me know how much amp/watts whatever is left in the battery, like so i can see when its like 25%, 50%, 75%, and 100% charged?

Blanca

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Last Edit: 16 Jun 2010 @ 10 27 AM

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 03 May 2010 @ 9:53 AM 
gavira_76 asked:


I would love to have a wind turbine in my garden, to generate electricity but I am sure most of you will do to, and the reason you don’t have it (and would agree with me) – everything they sell nowadays is big and ugly, especially if your garden is small and you are not allowed to install anything big on your roof.
I wonder why they don’t make wind turbines in the shape of anemometer – they would not take too much place, and would look good anywhere.
Or make a sleek wind turbine based on the design of those advertising banners they put outside of the stores- they spin like crazy in the wind.
Do you know any reasons why they don’t exist?
Pobept K – I love big industrial ones, they look so beautiful, especially when there are many of them, but if you have a small garden – every small wind turbine is still big for it, and look rediculous there, taking half of it.

ANNIE
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Last Edit: 03 May 2010 @ 09 53 AM

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DallasGuy asked:


I know it can be done, but how does it actually happen? Is there a diode or something that only allows current to flow into the grid. Does the system have to be at higher voltage than the grid?

Lindsey
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Last Edit: 02 May 2010 @ 01 05 PM

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Kwanzaa Baby asked:


Not only transmission, but also conversion?
I have seen numbers from 7% to 60% depending on who is doing the math.
Why ask:
In West Texas they are putting up hundreds (if not thousands) of wind turbine only to send the power directly to the large cities in Eastern Texas hundreds of miles away. There are nearby smaller cities that could be powered locally by the local wind who have to see the MANY windturbines across the horizon. Why not supply the local grid first then overflow to the large city grids with the leftovers?

ANGEL
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Last Edit: 02 May 2010 @ 05 33 AM

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 27 Apr 2010 @ 6:38 PM 
Jesse C asked:


i have a small solar panel,the ones from a garden lamp that turns on at night-i think.what i was wondering is can i just connect the solar panel to a capacitor and then a light just to test?or do i need something to convert the solar energy to usable energy?and how do i tell if a capacitor is broken?

Linda
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Last Edit: 27 Apr 2010 @ 06 38 PM

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paul s asked:


previous question left at my added detail that my calculation is $600 Billion to build the 100 square miles needed to replace all imported oil used for fuel. Should we invest, over 10 years, that amount once, versus paying that amount every year for import fuel? See previous question for assumptions and billr’s answer and calculations

Kristie
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Last Edit: 26 Apr 2010 @ 03 36 AM

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duahcim1 asked:


loll..funny how fast we get an answer in here. but i need something more simple and least dangerous

Frank
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Last Edit: 25 Apr 2010 @ 10 28 PM

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 24 Apr 2010 @ 7:48 PM 
bigblast3d asked:


how much energy does a 1 kilowatt solar panel produce in a year? (average)

Paul
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Last Edit: 24 Apr 2010 @ 07 48 PM

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Scott Grafton asked:


If I know what Kw output I am looking for, what wind speed etc. is required to achieve this.
Thanks to all

WENDY
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Last Edit: 22 Apr 2010 @ 10 17 PM

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