parabolic disk, smoked P.V.

I saw on TV where they used mirrors to increase a solar cells power. I guess they had better photo cells.

Category:

Science & Technology

Tags:

• parabolic
• disk
• solar
• power
• homemade
• electricity
• heat

[YouAdamNazzkl0wn]

very cool- someone should put a multimeter on the PV cell to see what kind of output your getting - even with a crappy PV.

[11aaa11aa11]

I did. It started out at better than 6v. That lasted about thirty seconds and started falling rapidly. I disconnected the volt meter and set it down thats when I noticed it bubbling. Thats when I decided to record it burning. The cell was destroyed at that time anyway.

[ChristianSarbu]

i mean cell not lens

[ChristianSarbu]

or even only one side i u nno have cold water flowing over it with a glass to cover the lens that way the water will trap heat and move it away in the water

[ChristianSarbu]

trap the cell in 2 panes of glass n keep them cool with ice water!

[randommagnum]

Yeah I think that the PV cells they use for a concentrated setup are specially designed for that purpose. Plain-Jane PV cells can't take concentration.

[czarsolarhydrowind]

@YouAdamNazzkl0wn You could try puting the panel closer to the dish out of focus and make some slats for less heat/light and more air to flow through the dish??

[nitroburn]

I modified a dish in the same way, but I actually sealed the LNB, replaced the plastic cap with metal, and added some copper tubing to where the F-Connectors use to be. That way you can cool the PV (and heat water) with a small pump. Likely get much longer then 30 seconds out of even a cheap PV. 

[kght222]

with that kind of solar energy focus you need to use heated oil. its more like a solar farm using mirrors and a tower, than like a solar panel you might put on your roof. if you condense that much light into one point most (if not all) ambient gathering solar panels will do just exactly what happened, not to mention a solar array, similar to what that is, must be adjusted all the time during the day to continue to focus the light, while that isn't as necessary with a panel.

[soggieshorts1]

allso with perobolik mirrors thers a focal point and you should not put any thing you do not intend to burn in the focal point

[mdivinc]

If your parabolic disc can generate that kind of heat that fast, you are better off directing it at vessel with water in it to produce steam to power a turbine to spin a generator. That in turn could charge a bank of batteries to run your house with very little noise.

[jerryaltman]

They have a cooling sytem, so they get about 35% eficiency of electricity, and the water used to cooling get hot and is stored as hot water for domestic use. So if measure the water heating use plus electricity the system get 75% eficiency.