powering solar panels with led?

[chewyy]

Would it be possible to power a 100 watt panel with an array of leds overhead at night? and the leds would run off a separate solar system that was small enough to power the lights on only at night?

[billvon]

Would it be possible to power a 100 watt panel with an array of leds overhead at night? and the leds would run off a separate solar system that was small enough to power the lights on only at night?

Sure. To do that:

An efficient solar panel is around 15% efficient. Efficient LED's used for home lighting are around 6% efficient. So to run a 100 watt panel and get 100 watts out of it at night you'd need around 11,000 watts of power to drive the LED's.

[donny30]

try this

dont know if this will help but try


worth a try

Mod note
nice try next time you are banned

[Sunking]

No but I got a better idea I made millions selling plans for which I will now share with you for free.

Go to your local junk yard and find you a late model junker and get the electric window motor and alternator out of it. Then go to WalMart and buy you a car battery, water pump belt, and one of those 500 watt inverters you plug into a cigarette lighter.

Connect the battery to the motor a inverter. Fix a pulley on the motor to turn the alternator with the belt, and wire the alternator output back to the battery. Take the inverter output and connect it to your main breaker box. Turn it on and it will generate all the power you need. The motor will turn the alternator and keep the battery charged and provide power for the inverter. You will have to change the belt out once in a while as it wears out, and replace the motor and alternator once every few years, but they are cheap at the junk yard.

Good Luck

SK

[Sunny Solar]

Would it be possible to power a 100 watt panel with an array of leds overhead at night?and the leds would run off a separate solar system that was small enough to power the lights on only at night?[COLOR="#000000"]And how does the seperate solar system get enough moonlight??? cosmic light?? black light? onto its panels to power the LEDs on the other panels??[/COLOR]

[inetdog]

Would it be possible to power a 100 watt panel with an array of leds overhead at night?and the leds would run off a separate solar system that was small enough to power the lights on only at night?[COLOR="#000000"]And how does the seperate solar system get enough moonlight??? cosmic light?? black light? onto its panels to power the LEDs on the other panels??[/COLOR]

Simple:
1. Run a light pipe capable of carrying the amount of sunlight required to some point in the opposite hemisphere where the sun will be shining.
or
2. Run the feed wires from a solar panel in opposite hemisphere to LEDs, so the LEDs will only be lit at night.

Some people just have no imagination (unlike Sunking).

[Sunny Solar]

Sorry Inertcat I didnt think of either of those solutions. but have to admit technically both would be possible.
But to be honest I did think of one other posibility but didnt put it in print as it requires some mechanical skills that may be difficult for some..
My other idea was if the panels collect sunlight on one side in daytime mabe if they were undid from their mounting and turned them upside down mabe that side is receptive to moonlight.? I will check my Earth 4 energy or Home energy for $1 books and DVDs.

[Mike90250]

You get a solar tube skylight, and run a hole through the planet to get sun from the other side. (but don't drain the ocean because you can't drill straight).

[Sunking]

You know what is really scary? There is a whole lot of people like Chewy out there and they are allowed to vote.

[PNjunction]

I forgot where I read it, but the question was if you hooked a solar panel backwards to the battery, would it EMIT photons? (rhetorical obviously)

And conversely, if you hooked LED's up backwards would they be able to make a solar panel out of them? Probably not in my lifetime.

[inetdog]

I forgot where I read it, but the question was if you hooked a solar panel backwards to the battery, would it EMIT photons? (rhetorical obviously)

And conversely, if you hooked LED's up backwards would they be able to make a solar panel out of them? Probably not in my lifetime.

One April issue of PopTronics discussed the new device, the Dark Emitting Diode or DED. By testing to select the production line output into either the LED or DED category you can get 100% yield.
Among the uses for DEDs are as readout devices for Write-Only memory.

[Mike90250]

I forgot where I read it, but the question was if you hooked a solar panel backwards to the battery, would it EMIT photons? (rhetorical obviously)

And conversely, if you hooked LED's up backwards would they be able to make a solar panel out of them? Probably not in my lifetime.

Backfeeding a dark PV panel, produces heat emission (IR photons)

A Green LED in sunlight, produces voltage !