SOLAR PANEL WITH A FRESNEL LENS CPV CONCENTRATED PHOTOVOLTAIC PV SOLAR CONCENTRATOR FREE ENERGY

http://www.greenpowerscience.com/
Boosting the power of a solar panel by using a Fresnel Lens and doubling the sunlight reaching the panel.

Category:

Science & Technology

Tags:

• SOLAR
• PANEL
• POWER
• BOOSTER
• ENHANCER
• PHOTOVOLTAIC
• FRESNEL
• LENS
• PLANET
• GREEN
• SCIENCE
• FREE
• ELECTRICITY
• CHARLES
• FRITTS

[rainbowsalads]

Greenpower science is awesome!! My favourite channel. : P

[GREENPOWERSCIENCE]

@rainbowsalads :-) Thank You!+++++++

[gymsim]

Hey Dan. Nice idea with using the lens! There are some applications on the web for a 'stretched' Fresnel lens solar concentrator for satellites. The lense material is not suppose to be as fragile, but I've found no evidence of it actually being used. Are you familiar with any of those experiments or the results?

[GREENPOWERSCIENCE]

@gymsim most Fresnel lenses will bend like that. Not sure what the point would be in bending it. That makes the optics useless. I have seen patents for the bending? Some think it offers and endless tracking to a perfect point.

I have some Fresnel lenses that are made out of lexan, fresnel Rubberized but lens is bullet proof. will cut but not puncture.

[565Customz]

isreal has focused ALOT more light that you have there on a spot roughly one square foot...it didnt melt. its on youtube . search isreal solar farm

[GREENPOWERSCIENCE]

They have an elaborate cooling heat sink system.

[cepedaruben1]

Good demo but there are safety concerns. I've used a 60 inch fresnel lens from an old projection tv screen also but are you aware of how much heat can be generated? The sun does not stay in a certain location for very long so if you leave such a lens pointing in your focal point unsupervised, within 30 minutes you could inadvertently burn something down. This happened to me. No major damage but it could have been way worse. The challenge is to come up with a solution to this and cost effective.

[jonnyasprin]

Tks. for the great idea Dan,Happy and Safe New Year to you and your family.

[chop98]

@Ozarkprepper I see you asking this question about 3 mos ago with no response from anybody. :) From what I have read (and I'm sure that you have by now also), the cells DO lose efficiency when heated. Dan has done some tests here on YT with them. Good thought on the heat sinks also.

[Ozarkprepper]

Plenty of computers in the scrapyards, using the heat sinks from their CPU's on the back of the panels would absorb the heat. Do have a question, is there a power loss when the solar panels are hotter?

[SnowBoardingBassist]

The question is, would the excess energy be worth it at all if you had to power an external cooling device of any kind. I mean you could use another smaller solar panel without a lense to power a lower RPM fan, but that would begin to become costly; also if the smaller solar panel failed then your whole system would be done.

[SnowBoardingBassist]

If you could use say the shape of a 50 sided die and cut in half as the lense, that would create a lot of solar exposure to one spot. As for cooling the solar panel, you could drill down deep with some pvc piping and some sort of fan to accelerate the ground temperatures back up. On a hot summer day everyone knows that the basement of a house will probably not need air conditioning especially if it is more than 6 feet down. It probably would not require that much extra energy.

[Tornfreedom]

Dan, you need to include some Basic Science in your vids. You are Increasing the Collecting Area by adding the Lens or Mirror. Unfair Comparison, because the Mirror is not at 90* to the Sun, and for that you need to change the Geometry entirely, put the PV panel with its' back to the sun (!) and sacrifice its' area and use at least Two mirrors to get any real increase. Ideally you need Front Silvered Mirrors to avoid absorbtion by the glass layers. And Turn the whole caboodle With the Sun...

[clseairsppt]

ive been thinking about this as well, what about just a machined aluminum heat sink mounted to the back of the panel open to the air but used to seal the back of the panel two uses in one.

[Tadesan]

@atomicfrog2000 Great suggestion atomicfrog! You could use your bright idea to make a "safety magnifying glass" which does not burn things! Just coat the front surface, then try the back, then try both. Because the film will block the heat, you could use it in any application where the dammage caused by the sun's heat is of concern. It could be used for instance, to provide full brightness, high magnification, solar viewing, without the danger of injury.

[Wireball]

Attach a waterblock to the back of the solar panel. This is similar to Kaje01's water flowing suggestion. I saw some panels with water blocks soldered onto the back at C&H Surplus a few years ago (it seems that others have thought of this too). Of course, if the water pump fails or a leak develops, you're in trouble.

A low maintenance solution is giant finned aluminum heatsinks on the back of the panels. Make sure there's enough spacing between the fins for convection.