Look into radiative cooling. Basically this, but more practical. Several companies working on it:

0x53 • yesterday at 10:10 PM • 2 replies • view on HN

Look into radiative cooling. Basically this, but more practical. Several companies working on it: https://www.skycoolsystems.com/

grim_io • yesterday at 10:50 PM

I don't quite believe this.

Is it really better than just using solar panels to run a heat pump?

➕ show 1 reply

morshu9001 • today at 12:25 AM

This looks like it depends on the outside air to cool the coolant. "Radiative" can mean that too, not just IR radiation.

alt Hacker News