Agrivoltaics, saving farms

[ReinyDays]

And yet measured daytime temperatures were cooler above solar farms than the surrounding area.

Go measure again ... with thermometers ... but you're right, there no effect in the surrounding area, or the rest of the planet ... the 3.3% solar panel surface doesn't effect the other 96.7% ...

Go touch a solar panel at full production ... it's hotter ... see? ... and no condensation ... you're afraid to learn, that's sad ...

 

[ding]

Go measure again ... with thermometers ... but you're right, there no effect in the surrounding area, or the rest of the planet ... the 3.3% solar panel surface doesn't effect the other 96.7% ...

Go touch a solar panel at full production ... it's hotter ... see? ... and no condensation ... you're afraid to learn, that's sad ...

I think I'll go with the satellite measurements at 116 solar farms.

 

[Toddsterpatriot]

What percentage of solar radiation striking solar panels is in the visible light spectrum.
The answer is 40 to 44%.

What percentage of visible light striking solar panels is converted into electricity?
The answer is 15 to 20%.

So per square meter solar panels effectively reduce the 240 W/m² striking it by:
240 W/m² x 0.44 x 0.2 = 21.12 W/m²

What is the total land surface of the planet?
The answer is 149 million square kilometers or 1.49x10^14 m²

What is the solar radiation striking the total land surface of the planet?
The answer is 240 W/m² x 1.49x10^14 m² = 3.5760x10^16 W

What is the reduction needed to make the planet net cooling?
The answer is 0.7 W/m² x 1.49x10^14 m² = 1.0430x10^14 W

How many square meters of solar panels are needed to change the planet from net warming to net cooling?
The answer is 1.0430x10^14 W / 21.12 W/m² = 4.9384x10^12 m²

What percentage of the total land surface of the planet would need to be covered by solar panels to change the planet from net warming to net cooling?

The answer is 4.9384x10^12 m² / 1.49x10^14 m²= 0.0331 or 3.31% of the total land surface of the planet.

ReinyDays

There is no mention of replacing fossil fuels or waste heat in your calculation here.

You think using solar panels cools the planet.

^This is different from your claim here>>>>>>> Wind Power, is Germany waking up to no lights on?

 

[ding]

ReinyDays

There is no mention of replacing fossil fuels or waste heat in your calculation here.

You think using solar panels cools the planet.

^This is different from your claim here>>>>>>> Wind Power, is Germany waking up to no lights on?

If 1000 W of solar powered electricity is used to power an electrical device, does it have the same waste heat as 1000 W of electricity that was generated from fossil fuels?

 

[Toddsterpatriot]

If 1000 W of solar powered electricity is used to power an electrical device, does it have the same waste heat as 1000 W of electricity that was generated from fossil fuels?

Why wouldn't it?

 

[ding]

Why wouldn't it?

How much more waste heat will fossil fuels generate to produce 1000 W of electricity than solar power?

 

[Toddsterpatriot]

How much more waste heat will fossil fuels generate to produce 1000 W of electricity than solar power?

Does an acre of new 0.05 albedo asphalt cool the planet more than an acre of new 0.05 albedo solar panels?

 

[ding]

Does an acre of new 0.05 albedo asphalt cool the planet more than an acre of new 0.05 albedo solar panels?

How much more waste heat will fossil fuels generate to produce 1000 W of electricity than solar power?

 

[Toddsterpatriot]

How much more waste heat will fossil fuels generate to produce 1000 W of electricity than solar power?

Satellite readings from 116 solar farms don't actually mean solar panels cool the planet?

 

[ding]

Satellite readings from 116 solar farms don't actually mean solar panels cool the planet?

How much more waste heat will fossil fuels generate to produce 1000 W of electricity than solar power?

 

[Toddsterpatriot]

How much more waste heat will fossil fuels generate to produce 1000 W of electricity than solar power?

Are you off the old claim that solar panels cause cooling?

 

[ReinyDays]

ReinyDays

There is no mention of replacing fossil fuels or waste heat in your calculation here.

You think using solar panels cools the planet.

^This is different from your claim here>>>>>>> Wind Power, is Germany waking up to no lights on?

Solar panels have no combustion ... so there's no energy wasted on exhaust gases ...

Or do you mean the sunlight that falls between panels? ... and no, I don't think solar panels cool the Earth ... anymore than the blond sands of the Sahara ... that's like claiming hydro-dams reduce rainfall ... or windmill slow down the wind ...

I'm taking the electrical energy out of the system as soon as the radiative energy arrives ... under perfect conditions, this is 200 W/m^2 ... then I'm using the remaining radiative energy and letting the surface of the solar panel and associated hardware absorb it and convert it to kinetic energy ... i.e. temperature ... then letting the energy seek it's own equilibrium with the environment and re-radiate the energy back out as radiative energy ...

The difference is I'm using actual albedo ... whereas ding-a-ling is using Earth's average albedo ... which is significantly higher than what 21st Century technology brings to our solar panels ... and I also made that mistake, my first set of numbers were wrong ... the corrections to my calculations are found in Post #238 ...

I can demonstrate this ... go touch a solar panel on a bright sunny day ... see? ... it's HOT ... hotter than the surrounding air ... ya might burn yourself so be careful ... this means solar panels add to global warming ...

 

[ding]

Are you off the old claim that solar panels cause cooling?

Have you figured out it's an incremental analysis?

 

[ding]

I'm taking the electrical energy out of the system as soon as the radiative energy arrives ... under perfect conditions, this is 200 W/m^2 ... then I'm using the remaining radiative energy and letting the surface of the solar panel and associated hardware absorb it and convert it to kinetic energy ... i.e. temperature ... then letting the energy seek it's own equilibrium with the environment and re-radiate the energy back out as radiative energy ...

How do you explain the satellite measurements which show 2C cooler temperatures during the daytime when solar power is generating electricity and unchanged night time temperatures when it's not?

 

[Toddsterpatriot]

Have you figured out it's an incremental analysis?

You're changing your original claim?

 

[Toddsterpatriot]

How do you explain the satellite measurements which show 2C cooler temperatures during the daytime when solar power is generating electricity and unchanged night time temperatures when it's not?

It's obvious, solar panels with a lower albedo magically cool the planet.

 

[ding]

You're changing your original claim?

What do you think my original claim was?

 

[ding]

It's obvious, solar panels with a lower albedo magically cool the planet.

If the albedo outweighed the converting of photons into electricity, you might have a point. But that's not what the data from satellite measurements at 116 solar farms shows.

 

[Toddsterpatriot]

What do you think my original claim was?

It's a bad idea to use solar energy during an ice age because the panels magically cool the planet.

 

[Toddsterpatriot]

If the albedo outweighed the converting of photons into electricity, you might have a point. But that's not what the data from satellite measurements at 116 solar farms shows.

Converting photons into electricity doesn't mean the photons don't heat the planet.

You're the dumber than the smart photon moron.