Regarding to that article here I found on Linkedin ->
I made myself several thoughts about being more (cost) efficient.
Especially regarding existing cooling systems that use the classic heat exchange by compression/expansion of a cooling/working liquid.
First at all, I simply would use Mercury (Quicksilver, the element Hg) as the standard cooling liquid derrivate. It’s cheap, a little bit safer to handle and it’s not responsible for the ozone hole issue or the deplation, it’s climate neutrale. It has a much better melting and vaporization vector than the classic working liquids like “Pentane” in cause of it’s much lower vapour pressure, that makes it more efficient in the stage of compression. So we just need a very few lower pressure and so much more less energy. IMHO. The compression motor/aggregate could also be phase compensated.
So, when I also read an article about Vantablack, the relative new coating that absorbs nearly 99,965% of light (so Infrared, too), I thought about using that coating just directly within the radiator’s housings. I currently do not know much about the real electric effects of VENTABLACK, but AFAIK Carbon Nanotubes have an thermoelectric effect, that could be used to feed the electric power system of the air conditioning system, additionally.
The coating/covering could be produced as a foil. It would be the most simple idea to bring it in. We would not need so many new air conditiong systems and spend much more energy and material. 🙂