Energy-saving coating without pigment keeps the surface beneath cool
1–10 of 41 posts
Re: Energy-saving coating without pigment keeps the surface beneath cool
#2The posted article makes the cooling claim (and quotes one of the paper's authors) but the paper itself is silent on this issue, except indirectly (this is reflective paint, not normal absorbent paint)
Re: Energy-saving coating without pigment keeps the surface beneath cool
#3The posted article makes the cooling claim (and quotes one of the paper's authors) but the paper itself is silent on this issue, except indirectly (this is reflective paint, not normal absorbent paint) Paper: https://www.science.org/doi/10.1126/sciadv.adf7207
The real article is infinitely more interesting than the original article above. Painting with butterfly wings! The processes are super interesting and the result is remarkable. I’d love to get my hands on some, I hope they commercialize this.
Re: Energy-saving coating without pigment keeps the surface beneath cool
#4The examples are weird in this article. Paint isn't applied to most structures to give the structure a colour, but to achieve some other effect, such as weatherproofing, or to make the surface more uniform. It just so happens that putting pigment into the paint achieves an aesthetic effect.
It's cool tech though, but i'm not imagining how distracting driving along a street of iridescent houses will be!
Re: Energy-saving coating without pigment keeps the surface beneath cool
#5Two YouTube researchers[0][1] (they make science content that is very much not in the traditional form of YouTube) have been working on Infrared Cooling Paint for almost a year now and have been detailing how individuals can make it at home (although a fairly involved/lengthy process today.)
There's definitely something here, hopefully someone sells it pre-made, I'd love to try some.
Re: Energy-saving coating without pigment keeps the surface beneath cool
#6The examples are weird in this article. Paint isn't applied to most structures to give the structure a colour, but to achieve some other effect, such as weatherproofing, or to make the surface more uniform. It just so happens that putting pigment into the paint achieves an aesthetic effect. It's cool tech though, but i'm not imagining how distracting driving along a street of iridescent houses will be!
[deleted]
Re: Energy-saving coating without pigment keeps the surface beneath cool
#7The examples are weird in this article. Paint isn't applied to most structures to give the structure a colour, but to achieve some other effect, such as weatherproofing, or to make the surface more uniform. It just so happens that putting pigment into the paint achieves an aesthetic effect. It's cool tech though, but i'm not imagining how distracting driving along a street of iridescent houses will be!
The paper says:
> “The optical response of these artificially engineered nanostructures can be spectrally tuned across the entire visible spectrum to form a full-color gamut by controlling the gap plasmon dispersion via the geometrical parameters. In the proposed architecture, the subwavelength optical cavity ensures a large degree of angle insensitivity, while the stochastic nature of the self-assembled layer results in polarization independence and near 100% absorption at selected spectral bands.”
See https://news.ycombinator.com/item?id=35521006 for the link to the paper.
Re: Energy-saving coating without pigment keeps the surface beneath cool
#8Paint coatings can make a massive difference to temperatures in a home. People understand "black paint = hot", but that isn't even necessarily true, and there is far more to it.
I believe building regulations should require specific performance from paint on new buildings, and that commercial painters be required to replace any paint on a 'same or better' basis.
Performance would be measured on the basis of watts of absorption under sunlight, and watts of emissions to the night sky. It is possible to design paint that visually is any color, yet maximizes or minimizes each of those parameters independently - therefore allowing you to choose a coating to minimize energy use for the building in whatever climate surrounds it.
I think if all buildings were painted with optimal paint tomorrow, we could probably shave more off the worlds energy consumption than all EV's have saved so far.
Re: Energy-saving coating without pigment keeps the surface beneath cool
#9The examples are weird in this article. Paint isn't applied to most structures to give the structure a colour, but to achieve some other effect, such as weatherproofing, or to make the surface more uniform. It just so happens that putting pigment into the paint achieves an aesthetic effect. It's cool tech though, but i'm not imagining how distracting driving along a street of iridescent houses will be!
It's definitely both otherwise we wouldn't bother top coating half the structural steel we manufacture, everything could just be Zincanode 402 or similar, which is great if you love dull grey.
https://www.duluxprotectivecoatings.com.au/products/ranges/z...
Re: Energy-saving coating without pigment keeps the surface beneath cool
#10Paint coatings can make a massive difference to temperatures in a home. People understand "black paint = hot", but that isn't even necessarily true, and there is far more to it. I believe building regulations should require specific performance from paint on new buildings, and that commercial painters be required to replace any paint on a 'same or better' basis. Performance would be measured on the basis of watts of…
Tell us more.