New AC Tech Sends Heat Into Space & Saves 95% On Cooling Bills!

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Barium sulfate (BaSO4) is another material that have 98% reflectivity between 250 to 2500nm. It is cheap to manufacture an simple to obtain. According to Perdue University researcher coating 1000 sq. ft roof give 10 kW of cooling capacity. Industry grade Barium Sulfate cost ~$0.60 per kg. You probably could make your own paint at home by mixing barium sulfate with exterior primer and used that as paint.

So a 95% reduction in electric bill is claimed from a system which saves 60-80% on cooling cost? Doesn't add up.

8:42 There is no heat pump in this picture. It is an evaporative cooler (AKA a "swamp cooler"). Coincidentally, evaporative coolers also are most effective in the same climates that SkyCool's are. A SkyCool system could be used as a precooler on an evaporative cooler making it more effective over greater range of climactic conditions than an evaporative cooler alone while still being much more energy efficient than compressor-based ACs.

I'd believe this when I see 15 degree drop in coolant than ambient and in direct sunlight!!!!!!

Heat pumps have gone through a lot of improvements in the last 20 years the new units are way more reliable.

My BS detector went off the charts xD

I would love response from the scientifically minded on this. Photovoltaic panels are optimal, in the northern hemisphere, facing south. From what was stated in this video wouldn't it make sense for the Skycool panels to be placed on a north-facing roof plane to reflect out to space in that way? Could we optimize with PV south and Skycool north?

Here’s a thought. The sky cool panels could be installed on the non-southern facing parts of the roof which are less efficient at creating solar powered electricity. So you would have radiative cooling, which doesn’t have to be aimed at the sun, on the areas of your roof with less potential for solar power generation. Of course the ideal solution would also involve increasing the albedo or heat reflectivity of your roof along with solar power generation in the solar panels on the sun optimized areas of your roof and the sky cool panels on the rest.

I’m curious how this scales? I’m thinking of industrial chiller plants. Those things are major energy consumers.

This is theoretically possible, Infrared LEDs do this in very small quantities. I didn't think the material science was far enough along for large scale applications. Overall sounds promising but I would definitely want to see some more third party reviews. Also, cloud cover shouldn't effect cooling ability, just equivalent emissions, so... some concern on the language there.

At about 8.45 you show a device mounted on a wall. That unit is not an a/c but an evaporative cooler, or "swamp cooler", as we call them in the desert. Water drips down aspen pads and a fan blows hot air from outside through the pads, cooling it, into the house and then out through open windows. It was the cooling of choice in the desert because it was very cheap and effective in the dry months. It isn't used much now because of the amount of routine maintainance and the staggering increase in the cost of water.

When I was in the service back in the 60s our EM clubs had water chillers you could hang meat in them. They were very efficient. I would think that anyone that had a personal well would save lots of energy with a system like that. I know that in Canada they are drilling deep wells and bringing up hot water to be used for heating, and it's a loop, so you're recirculating the water. It uses tanks for storage until all the heat has been used. Solar is just to expensive especially for retrofitting.

In Brazil pay the power bill is now prohibitive

Since solarpanels are more efficient when cooled, it would be natural to combine the two.

Optimize system life-cycle costs with PV (for other electrical loads) on south and Sky Cool on north facing roof exposures.

Well, I guess, we should add these to all the glaciers, and ice shelf. this would reduce their temperature on the surface, and take the excess heat. Or pair them with the solar panels, have them cool the panels during the day increase their efficiency, and during the night, they cool the liquid medium even further .

I think aiming the radiative panels north and solar pv panels south would be a good way to use both on the same roof.

A note on cloud cover and skycool's drop in performance; typically a cloudy day needs less cooling anyway.

"how in the world did anyone ever live without air conditioning, seriously" me : "some people are just adapt to their environment even before they're born, seriously , I'm one of them, this genetic I got from my family tree who survived living without AC for generations, give me huge tolerance towards heat"