Most reflective material for solar shortwave and most emissive for terrestrial long wave?
Most reflective material for solar shortwave and most emissive for terrestrial long wave?
(OP)
Looking for recommendations for two commercially available films and coatings, the best for...
#1 - Maximum reflectance, regardless AOI, for short wave sunlight primarily and, secondarily,
reflects some or a lot of long wave, and thirdly, also good emissivity for any of the spectrum.
Appreciate any suggestions for commercially available film and also for a coating.
#2 - A coating or paint that has maximum emissivity for long wave spectrum and is, secondarily,
also highly thermally conductive, too.
Thank you for any suggestions.
#1 - Maximum reflectance, regardless AOI, for short wave sunlight primarily and, secondarily,
reflects some or a lot of long wave, and thirdly, also good emissivity for any of the spectrum.
Appreciate any suggestions for commercially available film and also for a coating.
#2 - A coating or paint that has maximum emissivity for long wave spectrum and is, secondarily,
also highly thermally conductive, too.
Thank you for any suggestions.





RE: Most reflective material for solar shortwave and most emissive for terrestrial long wave?
"In this bright future, you can't forget your past..." Bob Marley
RE: Most reflective material for solar shortwave and most emissive for terrestrial long wave?
Found this, too, from NASA, while searching...
Spacecraft Thermal Control Coatings References
http://www.aztechnology.com/pdfs/nasa-tp-2005-2127...
...which lists many materials, coatings and paints for reflection and emissivity.
Just have to sort out what's both commercially available, too, and not priced solely for the space program.
RE: Most reflective material for solar shortwave and most emissive for terrestrial long wave?
"In this bright future, you can't forget your past..." Bob Marley
RE: Most reflective material for solar shortwave and most emissive for terrestrial long wave?
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: Most reflective material for solar shortwave and most emissive for terrestrial long wave?
For current application, I'm looking for the best commercially available film and a coating that's specifically for reflecting a majority of the short wave solar.
And, another coating that's best tuned for emitting the majority of long waves to clear night sky.
RE: Most reflective material for solar shortwave and most emissive for terrestrial long wave?
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: Most reflective material for solar shortwave and most emissive for terrestrial long wave?
Yes, white paint is very good, can't go wrong there, I'm just wanting to make sure I've done a comprehensive survey of what all 'new & improved' is out there today.
I see so many ingenious new formulations pushing the envelope, tweaking with nano tech additives, etc.
Upping reflective base from say a respectable 95% to 97-98% or better, is important to me here to get that little extra, if it's out there and affordable.
RE: Most reflective material for solar shortwave and most emissive for terrestrial long wave?
RE: Most reflective material for solar shortwave and most emissive for terrestrial long wave?
- Shane