I believe the majority is solar thermal and not solar PV.This is a stupid lie. Solar is very, very effective in Saudi Arabia.
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I believe the majority is solar thermal and not solar PV.This is a stupid lie. Solar is very, very effective in Saudi Arabia.
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Rooftop installations in the south aren’t very efficient.They also work very well in Houston. Here in Atlanta solar is popping up on large office buildings and office parks.
Only because they over built. Temps above 100 degrees create a 30% loss or more in most photovoltaic panels. You could cover the whole earth with them, and it still would not provide enough power to power our industries.
I just went back to the article, and this appears...:Temps above 100 degrees create a 30% loss or more in most photovoltaic panels.
Link?
CORRECTION, Aug. 9, 2022: This headline and commentary as published exaggerate the facts. Our fifth and sixth paragraphs, taken together, indicate that, even at record-setting temperatures, solar panels continued to perform at better than 90% efficiency. While one could argue that a less-than-10% drop in efficiency might represent the “Stunning Failure” we claimed in our headline, it certainly did not render solar panels “useless” as we claimed in the third paragraph and our claim that they were “severely negatively impacted” in the fourth paragraph is questionable, as well. In reality, the data show that solar panels became marginally less efficient for a brief period of record-setting heat that may or may not ever repeat itself.
I just went back to the article, and this appears...:
I will go back and look at the actual papers. It appears the assumptions were incorrect. There is also an issue with the type of panel at issue.
Surprisingly, they perform worse as the temperature rises! Solar panels work by using incoming photons to excite electrons in a semiconductor to a higher energy level. But the hotter the panel is, the greater the number of electrons that are already in the excited state. This reduces the voltage that the panel can generate and lowers its efficiency.
Higher temperatures also increase the electrical resistance of the circuits that convert the photovoltaic charge into AC electricity. Modern hybrid solar panels are designed to suffer less from the heat, but they can still lose 10 per cent of their rated efficiency on hot days
How many posts did it take to correct you?After a little more looking and a bit of math. the figures were exaggerated by the article. Above 77 Deg F PV cells lose 0.035% of efficiency per degree rise in temperature. At 104 degrees F they lose roughly 10% of their output. As one scientist described it:
Most roof top installations reach 140 degrees F. So, a loss of 20% or more is found.
I stand corrected.
How many posts did it take to correct you?
I made several early on and you stayed in BS/Logarithmic denial.
You are finally Right on something after being beat over the head for nearly 4 MONTHS to get there.
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Well no doubt he didn't take your quips seriously. Who does?I corrected him in post #15, 16, 18.
You didn't show up until #41. Two months later. LOL!
Solar Panels Useless above 85 Degree F.CORRECTION, Aug. 9, 2022: This headline and commentary as published exaggerate the facts. Our fifth and sixth paragraphs, taken together, indicate that, even at record-setting temperatures, solar panels continued to perform at better than 90% efficiency.
I made several early on and you stayed in BS/Logarithmic denial.
Well no doubt he didn't take your quips seriously. Who does?
You are a One line Troll/quipster who should only be dealt with with a Fly Swatter.
I can get you into a GED course that can get you up to a paragraph in 4 months or so!
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Ah yes... dog pile... The act of cowardice. At least some of us are open to correction, but like you, some are not.
Why? You didn’t.Come on Billy, you've gotta admit you fucked up.
Did you ever find backup for this stinker...."The loss is logarithmic"?
You just pulled it out of your ass, right?
Tell me Todd, If 200 to 400ppm will cause a 6.5 deg C rise and the next doubling (400 to 800ppm) will only create a 1.8 deg C Rise. The reaction to a doubling is diminishing and therefor a loss of potential, is it not? This loss of potential is logarithmic. Any more stupid questions?Come on Billy, you've gotta admit you fucked up.
Did you ever find backup for this stinker...."The loss is logarithmic"?
You just pulled it out of your ass, right?
Tell me Todd, If 200 to 400ppm will cause a 6.5 deg C rise and the next doubling (400 to 800ppm) will only create a 1.8 deg C Rise. The reaction to a doubling is diminishing and therefor a loss of potential, is it not? This loss of potential is logarithmic. Any more stupid questions?
He’s like four posts away from becoming Apu.Tell me Todd, If 200 to 400ppm will cause a 6.5 deg C rise and the next doubling (400 to 800ppm) will only create a 1.8 deg C Rise. The reaction to a doubling is diminishing and therefor a loss of potential, is it not? This loss of potential is logarithmic. Any more stupid questions?