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[/.] 13-Year-Old Uses Fibonacci Sequence For Solar Power Breakthrough - Page 4

post #31 of 91
Quote:
Originally Posted by FearSC549 View Post
I'm surprised why solar panel researchers or scientists haven't thought of this...I mean isn't it logical to follow a tree's pattern of collecting sunlight since they've been around for millions of years?
Hindsight bias. It seems obvious now...
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post #32 of 91
Quote:
Originally Posted by kweechy View Post
I feel like no one saw this post of mine, so again:

His flat array uses 10 panels, the tree array has 18 or so.

80% more panels for a 20-50% gain in energy production.

The flat array may have had another 10 panels on the other side of it, but that's not how you'd ever arrange a flat array (putting half your panels facing AWAY from the sun).
From the article:
Quote:
I needed to compare the tree design pattern's performance. I made a second model that was based on how man-made solar panel arrays are designed. The second model was a flat-panel array that was mounted at 45 degrees. It had the same type and number of PV solar panels as the tree design, and the same peak voltage. My idea was to track how much sunlight each model collected under the same conditions by watching how much voltage each model made.
Maybe you should read first before posting.

OT, bravo to the parents who supported this kid and even went as far as getting him the materials to continue his experiment.
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post #33 of 91
Quote:
Originally Posted by aldfig0 View Post
Hindsight bias. It seems obvious now...
It is not obvious. In fact it is still useless. Lets do a less efficient version of collecting solar energy than we already have!

Tracking is more efficient.
Flat is cheaper and takes less space than making a big tree.

There is a reason this method wasn't used. That's because its impractical.
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post #34 of 91
I'm having a hard time figuring out where the alleged increased output is coming from. If they're both using the same amount of panels, they'll both have the same surface area and if all the panels are adjusted to the optimal angle, there shouldn't be a difference between them.
    
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post #35 of 91
Quote:
Originally Posted by aroc91 View Post
I'm having a hard time figuring out where the alleged increased output is coming from. If they're both using the same amount of panels, they'll both have the same surface area and if all the panels are adjusted to the optimal angle, there shouldn't be a difference between them.
It's obvious isn't it? It's because the kid arranged them in a spiral around a pole...
    
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post #36 of 91
Oh, how silly of me. I forgot to factor in the "magic" variable.
    
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post #37 of 91
I think he overlooked one critical thing when building his arrays. The cells he uses in his tree appear to be well made, unbroken cells. He did not do the same in his "Standard" array, which are broken cells that do not have uniform size. This can easily lead to a 20% difference in performance, if not more.

This is looking like one of those ideas where it looks good idea at first glance, but turns out to never be practical.
post #38 of 91
I always thought solar cells arranged in a bunch of little pyramids across a flat sheet would work best... It's all about surface area, right?
 
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post #39 of 91
Um, wasn't there news that someone made a solar panel that is 90% efficient earlier in the year rather than like 20% or so with the ones now?
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post #40 of 91
Quote:
Originally Posted by aroc91 View Post
I'm having a hard time figuring out where the alleged increased output is coming from. If they're both using the same amount of panels, they'll both have the same surface area and if all the panels are adjusted to the optimal angle, there shouldn't be a difference between them.
the difference comes from the average angle that solar rays hit the panes.

if you have a flat panel that does not track then you have get almost zero power in the morning, you get max power at noon and again almost zero in the evening on your panel.

on a tree design the panels are arranged in a way that gets more power during the entire day albeit on a smaller surface (ie. some leaves are pointing east and get a lot of power in the morning and none in the evening)

on a tracking panel you get max power all the time.

tried to explain without using math, hope its understandable...
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