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Josh C asked:


I am wanting to power just a couple household items with a small solar panel. What will I need? I know I need a solar panel, and some kind of AC-DC converter, and a battery perhaps? How would I wire it up?

I do NOT want to spend a fortune doing this, I am only in an apartment, so it needs to be small and self-contained.

Thanks!

RYAN

tennisboy9123 asked:


For a 5 month project at school I have to build a wind turbine for my home. How many hours will it take, will I get an efficent gadget, and how much will it cost? I’m thinking of getting help from a small wind turbine manufacturer. And I would just like to say my motor skills are very poor and I am not used to building things. Can I do it?

Baloor

Dave asked:


I’m studying an article on wind turbines. The article says that for electricity generation, a wind turbine rotating at high speed providing a low torque is preferable to a turbine rotating at a low speed and producing a high torque. Can anyone explain why this is the case? Surely the speed could be altered easily using a sequence of gears before the generator?

Lourae

Sumati Æðelfrid asked:


Hi all

I am currently building a savonius wind turbine that will be around half a meter tall. I have the general plan drawn up but just need some answers on what type of bearing to use – I really have no idea about different bearings/lubricants/size restraints etc. Would really appreciate any help that could be provided.

Thanks!

Gayle

Tanya B asked:


Regarding wind power, is the technology advanced enough to be able to fully rely on wind power?

Luis

Carrie asked:


I want to use 12vDc rope lighting that is 3 watts per foot and i am looking to use approx 64 ft of light. I am probably only going to have the lights on for 3-4 hours at night. I will be running the lights off a 12 volt car battery. What wattage will my solar panel need to be to recharge the battery during the day. I would appreciate any help, Thank You! I am also looking at led lighting that is only 0.8 watt per foot.

DAWN

Javier C asked:


Hi , I am from Argentina.
The prostitue we have as a president dediced to get electricity bill 400 % higher.
So, what is a good way to start getting everything with solar energy, I have seem somebody doing a solar panel with black painted cans of soda. What other alternatives do I have.
Thanks

Tamara

Thuja M asked:


I am wondering if I could pick up some piece of trash appliance or electronic gadget at a garage sale and pull a good DC motor out of it to use in experimental wind power projects. The motor would need to contain magnets, and generate a current at relatively low RPM. Do VCR’s or blenders or tape decks or vacuums or shavers or ??? have any good DC motors in them for this kind of application?
Bigger is better…

? (to a point.)
I appreciate the answers received so far, excellent ideas! Toy cars, cordless drills and alternators all sound like they are worth experimenting with. I’ve also been reading about treadmill motors, which are a bit bigger and capable of producing more juice! I intend to leave this question up and open until the answers stop coming in, thanks to all contributers.

Sueetta

Hog asked:


A citation would be great if you have it. Thanks. (And please don’t just say that you like solar power or something like that, I only want to know about the cost–it’s for a paper.)

Robbie

HUSSAIN H asked:


The total residential usage of electricity per capita in the Fort Collins, CO area is approximately 3.5 mega Watt hours (http://www.larimer.org/compass/electricity_env_use.htm#Chart2). As of 2004, 2.35% of that electricity was being generated through wind energy.
How many joules of energy are used per capita that are generated through non-wind sources?

Donna