about 10 hours ago - No comments
Question by : how we can reduce the vibration if we install wind turbine on the telcom tower? how we can reduce the vibration if we install wind turbine on the telcom tower – bcoz of the vibration link and coverage will fluctuate so how we can minimize it please guide me ! br// surendra
about 10 hours ago - No comments
Question by : Is there anyone in California who wants solar energy and doesnt know where to get it? Hi i have a lot of questions in regards to solar energy, and im really interested in it for the sake of California. Is there anyone who feels the same way i do? please include your
about 1 day ago - 3 comments
Question by peter out: In a wind turbine, what is the ratio of the input wind speed (to the turbine) to the output windspeed? If we had 2 wind turbines one directly ahead of the other, would the wind exitting from turbine 1 produce the same power in turbine 2? —————————————— Answer by rsdudmDepends on
about 1 day ago - 3 comments
Question by : how large must a solar panel be to power a train? If the schematics of a solar train were drawn, what would they look like? Would the train be large or small? Where would the panels be placed? And if so, how large must the panels be to fit the roof? Even
about 3 days ago - 1 comment
Question by Michael A: how much does a wind turbine cost for a small town? how much does a wind turbine cost for a small town. —————————————— Answer by jetrx_1011I recently saw an article on Yahoo news about a guy that bought a wind turbine for personal use. He spent around $ 65k. He figured
about 3 days ago - No comments
Question by Ashley J: How much solar energy (kJ) would have to be…? How much solar energy (kJ) would have to be transferred to a 145.0 foot length of asphalt highway that is 49.0 feet wide and 25.0 centimeters deep in order to raise the temperature 5.00 oC ?The average density of asphalt is 721
about 4 days ago - No comments
Question by tim is cool: how to turn a fan into a wind turbine? like those wind turbines that make energy. because it is basically the opposite. it takes energy and turns it into wind. a turbine takes wind and turns it into energy. how can i do this? —————————————— Answer by billrussell42Depends on the
about 4 days ago - 2 comments
Question by : How do I make my own solar panel? How do I make my own solar panels and generate my own power cheaply. The commercial one’s are just too expensive. —————————————— Answer by mugikuyuIts very easy but the entire process is quite lengthy. You will need to purchase some materials and then assemble
about 5 days ago - 4 comments
Question by : Why is Germany good for using wind energy? I know they use it, but what are some features of Germany that allows them to use it? —————————————— Answer by Haydenwind? Answer by Graham EarleIt’s the German diet which produces abnormally high levels of flatulence. Answer by ninaCause there is a lot of
about 5 days ago - 2 comments
Question by elrodvoss: What Solar Panel Efficiency would replace Coal? A friend sent me an article that a company called Fraunhofer has produced solar panels that can achieve 41.1% efficiency. Now taking into account the fact that solar do sent work during storms or night and greatly reduced during winters, what % do you think
about 1 year ago
You could connect them in parallel with diodes because both voltage sources are higher than the 12 v of the battery that you are charging. The battery establishes the 12 v at one side of the diode and both are forward biased by the 15 or 18 v sources. The current drawn by charging the battery will drop the voltage of each source across its internal resistance to bring them both down to the battery voltage plus a diode voltage drop of about 0.7 v
about 1 year ago
Goober’s idea is correct, though it would be costly to implement at a large power load. The best and simplest way is to buy two charge controllers, each of the proper configuration for the power source, and feed them both into the same battery bank.
about 1 year ago
Placing diodes in series with each source to the battery would solve your problem. You should use a charge controller on the system to prevent overcharging the battery.
I’ve put together a relatively simple dump load circuit which diverts excess power to high power resistors. It is part of a wind charging system with inputs from wind, solar, and a DC power supply.
http://members.rennlist.org/warren/wind.html
http://members.rennlist.org/warren/rackwiring.jpg
http://members.rennlist.org/warren/dumpload.html