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(BBC-US)   Sun... I am disappoint   (bbc.com) divider line
    More: Awkward, Heat, Solar cell, Sun, United Kingdom, SunPower, Tidal power, Photovoltaic array, Temperature  
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1098 clicks; posted to STEM » on 08 Aug 2022 at 2:20 PM (17 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



7 Comments     (+0 »)
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2022-08-08 12:53:44 PM  
Because increased heat on earth, which is caused by human activity, isn't what generates electricity, it's generated by the energy released by the sun, which has stayed the same? (in a relative way, of course)

/DNRTFA
 
2022-08-08 2:39:43 PM  
Who.... Thought solar panels generated electricity from heat, not light?
 
2022-08-08 2:49:09 PM  

fatassbastard: Because increased heat on earth, which is caused by human activity, isn't what generates electricity, it's generated by the energy released by the sun, which has stayed the same? (in a relative way, of course)

/DNRTFA


TFA: But its chief executive Chris Hewett says: "The heat itself brings down the efficiency of solar panels slightly."
 
2022-08-08 7:27:18 PM  
It seems like heat resistance should be a major focus of design for something that is made specifically to absorb sunlight.
 
2022-08-08 8:23:01 PM  
Are there actually people so stupid they don't know the difference between light and heat?  Hot weather isn't going to increase the output of solar panels, obviously, on its face.  Sunnier days might increase both things simultaneously so there is probably a relatively weak correlation, but even that's pretty dubious.  There are plenty of hundred fahrenheit days where the sky is cloudy and plenty of twenty-degree midwinter days where the sun shines all day.

What TFA mentions, that heat shifts the gap and efficiency of solar junctures due to vibration defect density, is also true: solar panels operate best at the temperature that they were designed to operate at, though they're not that sensitive to it performance-wise.  This, however, is not something I would expect a high-school dropout to easily pull out of their background education.

austerity101: It seems like heat resistance should be a major focus of design for something that is made specifically to absorb sunlight.


... okay, sure, nice for someone to volunteer that they themselves lack even a middle-school understanding of shiat like "heat and light are different things".  I guess I shouldn't be surprised who it is, really.
 
2022-08-08 8:45:49 PM  
Well, I might as well call out a certain chucklehead who has posted that solar and AC use are perfectly matched so solar is great. He is right in noting that the TIMING generally matches up. Unfortunately, it is often the case that you can have cloudy humid days that are really hot, but your generation might not be enough for the AC. This person and I often agree. His problem is that he can't help but overstate and extrapolate and be a pretty rude person generally.

And to be fair, much of the world is populated by people who don't know that the Earth moves around the sun, where milk comes from, or that potatoes grow in dirt.

In the next five years, I think solar will be a policy battleground. There is a freight train of demand for increased renewables. Utilities are really going up against a wall with fuel prices. Saturation of wind and solar beyond the 20% capacity level will create management problems.

Having people think that solar can do everything for everyone despite extreme heat is as bogus as the people who think renewables are worthless without batteries, etc.
 
2022-08-08 8:51:19 PM  

replacementcool: Who.... Thought solar panels generated electricity from heat, not light?


One of the greatest services of the BBC is letting the world know that the UK, despite its accents, has far far more Jeremy Kyles than David Attenboroughs. That does not surprise me. It surprises a lot of people though.

/ more chav than chivalry
// more quid than sterling
/// more something common than something we would like to think
 
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