Solar reflective auto paint

[freebeard]

I sprayed "cooling paint" on my desert cabin...this is shocking

TLDR; the part that is shocking is that he paid $330/gallon and only applied a single coat.

[cRiPpLe_rOoStEr]

Originally Posted by freebeard

He proposes using corrugated cardboard as a radiator!

I wouldn't trust a radiator made out of cardboard, yet it might not be the craziest thing I have ever seen.

[freebeard]

Water infiltration would be the Achilles heel. But his biodegradable waterproof coating (shellac flakes and beeswax) could be used to treat the inside.

[Logic]

Originally Posted by cRiPpLe_rOoStEr

... it might not be the craziest thing I have ever seen.

Might the craziest thing you've seen be the: Boric Acid, dissolved in Water to form an ACID! tossed into engine oil!?

[Logic]

Originally Posted by freebeard

Water infiltration would be the Achilles heel. But his biodegradable waterproof coating (shellac flakes and beeswax) could be used to treat the inside.

Why bother.
if you want a better, smaller, more aero radiator; Ionic wind = Corona Discharge negates the boundary layer on the outside. (and increases flow)
This would take a minor change in radiator design to implement both a push and pull effect, both negating boundary layer.

This study saw a 50% drop in temperatures from 60C to 30C using a std fan on top of ionic flow's boundary layer busting.
https://sci-hub.se/10.1063/1.2776164

(as you said: 'Obsess much'? Yes! and IT security is one of my (netw admin) 'things'! As is thorough research (and testing, for the more 'crazy' stuff) before opening my mouth
ie: You can be damn sure that I have run ANY/ALL possibly sus URLs past VirusTotal.
This one gets one orange flag. A check shows it to be for 'plagiarism'. (ye right!)

Then there's intriguing lowering of surface tension and increase in conductivity of magnetic field treated water car makers (with the budget) could experiment with.
(I think/guess that the variance magnetic field research results may have a lot to do with the, by chance, interaction/orientation relative to the Earth's magnetic field. .?
One thing one cannot ignore is that there are lasting effects at an atomic level like electron spin, as used in MRIs, for a start!

Another thing: All the aero knowledge seems to fly out the window 'because it's a radiator'.
'Outside the box!' thinking is where every major breakthrough started! (like it or not!)
It's like the education system etc was specially designed to discourage it!?
Good thing the Wright Brothers never listened to Professor Simon Newcomb and Lord Kelvin..!

[Logic]

Originally Posted by serialk11r

Note that 1% of the earth's surface is a metric s***load.

But yea the white painted surface is actually cooler than the air around it is correct (weather dependent though, doesn't work if the sky isn't clear). The high emissivity is one reason why white is cooler than even a very reflective silver. The silver just reflects most of the heat, while the white actively radiates if its temperature is higher than the surroundings.

it is.

A start would be under or around DOUBLE SIDED, Bifacial Solar Panels as I NB the the frequencies reflected by this paint is very good for solar panels.

Also; the paint is turning std heat into the correct frequencies of light, so one should do better than the numbers n the video below.

https://www.youtube.com/watch?v=mzqjCsZKUYQ

Also very interesting is vertical Bifacial Solar Panels (with reflectors) because:
They dont get snow and sh!t on them.
Can be used as fencing.
Can easily have crops grown between. (but that puts paid to the reflective thing)
Cuts 'Clipping' At mid day, while giving you more power in the mornings And evenings when you want/need it.
Run cooler = more efficient.

https://www.youtube.com/@ProjectsWit...query=verticAl

(Dave is worth watching because he's an engineer that collects the data = does the science correctly).

While Barium Sulfate is 98% reflective IIRC, plain old (crushed) limestone, at 95%, is a hell of a lot cheaper as a ground cover. (or Whitewash for walls and roofs)

I wonder how much better cheap Whitewash, with a touch of Barium Sulfate in it would be..?

Some interesting info, but no mixtures. Not much difference, except for price!
Subambient passive radiative cooling effects of barium sulfate and calcium carbonate paints under Malaysia's tropical climate

The BaSO4 cooling paint was able to achieve subambient temperature reductions of up to −6.1 °C and a mean net cooling power of 71.0 W m−2 while the CaCO3 cooling paint achieved a maximum subambient temperature reduction of −6.0 °C and a mean net cooling power of 69.9 W m−2.

[freebeard]

Can be used as fencing.

While this is optimal, exposure can be compromised by adjacent buildings or vegetation. It might be interesting to compare N/S versus E/W orientation.

Maybe vertical fins on a roof?

[Logic]

Originally Posted by freebeard

While this is optimal, exposure can be compromised by adjacent buildings or vegetation. It might be interesting to compare N/S versus E/W orientation.

Maybe vertical fins on a roof?

Check out the link to Dave's channel; he's done all that and it's all interesting, because the science is done correctly.

https://www.youtube.com/@ProjectsWithDave/videos

https://www.youtube.com/watch?v=I-Fz5T5c0OQ

[Logic]

NB that NONE of the results consider a reflecting surface that reflects 95% of light. (Limestone)

Still the ROI was 1 year in the worst case scenario. (vs 'never' for a std fence)

https://www.youtube.com/watch?v=L-GqZ2Z90aM

Here's some idea of what happens when the ground is reflective.

https://www.youtube.com/watch?v=xD1MT-ek05w