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

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grim_io 14 hours ago | parent | next [-]

I don't quite believe this.

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

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pidge 13 hours ago | parent [-]

> Our core innovation is a radiative cooling material that we’ve combined with a panel system to improve the efficiency of any vapor-compression based cooling system

A heat pump is a “ vapor-compression based cooling system” so that tech is an addition-to not an instead-of.

Whether it’s better probably depends on how expensive the additional efficiency is in practice.

> SkyCool’s Panels save 2x – 3x as much energy as a solar panel generates given the same area.

So if you’re area constrained maybe.

	▲	grim_io 3 hours ago \| parent [-]
		That's very hard to believe. Radiative cooling is really bad compared to any kind of fan in front of aluminum fins. Air itself is an isolator, there is a reason you need to shove in fresh air to take on more energy from the heat source.

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morshu9001 13 hours ago | parent | prev [-]

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