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Nissan develops paint that keeps cars cool in summer heat

Nissan Motor Co. said it has developed a new type of paint that significantly reduces the temperature inside vehicles parked in direct sunlight.

The surface of a car coated with the innovative material remains up to 12 degrees cooler than that of a vehicle with standard paint, tests showed.

The company said the coating material can help rein in the temperature rise not only on the car’s body but also in the vehicle when exposed to direct sunlight.

Fedizen ,

wouldn’t this also work on buildings? pavement?

Syd ,

No, only Nissans. It says right there.

MenacingPerson ,

Is metal paint and concrete paint the same thing? I’m not a painter

XeroxCool ,

Ultimately, they can be, but there’s lots of differences between them once they reach the bucket you buy. They have different adhesion qualities, but that could be addressed with an appropriate primer. They have different final finish surface requirements, which could be an issue for how the paint works. I remember seeing dragonfly-wing-style paint that was white when viewed perfectly straight buy blue when viewed at any off angle due to a microscopic vertical grid of blue walls. There may also be a required clearcoat component that may not be compatible between the two surfaces. Metal paint is also designed to handle the flex of metal where as concrete paint would barely be concerned about that but possible address crumbling instead.

Edit: and after reading the article, it’s a radiative-cooling paint rather than a reflecting coating. Concrete has a much lower thermal conductivity so this may not be effective in transferring heat out of the concrete.

Alexstarfire ,

Probably yes, but it may not actually be doable. Not just because of how much there is to paint, but because the energy doesn’t just evaporate. It’s got to go somewhere. In this case I’m assuming it’s reflected, even if diffused. If everything does this, things that don’t (people, cars, pets, etc) will get all that extra energy.

Wouldn’t want to end up in a situation like this: businessinsider.com/death-ray-skyscraper-is-wreak…

roguetrick ,

The amount of folks who have melted their shitty low quality thermoplastic patio furniture with their sliding glass windows will always amuse me, but overall I don’t consider IR radiation to be a big problem. Using a bunch of VOCs to paint everything and pollute a city would be though.

Sir_Fridge ,

You ever seen that curved building that focused the sunlight into a spot in front of it and melted cars? Lol

rolling_resistance ,

Can they develop a paint that reduces the amount of cars? That would be more helpful.

tb_ ,
@tb_@lemmy.world avatar

This might match your criteria:
An image of a car painted in army camouflage

(Jokes aside, I do agree with your sentiment)

Sylvartas ,

I don’t understand, why did you post a random picture of some pavement ?

mysticpickle ,

Why did you post a picture of an empty street?

Appoxo ,
@Appoxo@lemmy.dbzer0.com avatar

12 degree °C or °F???

Noodle07 ,

Considering it’s no an American brand I’d say Celsius

Donut ,

°C, which is not bad. Official press release (I think): …nissannews.com/…/nissan-trialing-cool-paint-tech…

Appoxo ,
@Appoxo@lemmy.dbzer0.com avatar

Neat.

frezik ,

Might be the most interesting thing Nissan has developed in two decades.

herrvogel ,

They found a very interesting way of selling their hybrid cars as full on EVs where I live. Their e-power stuff are small ICEs working as generators for electric motors that then drive the wheels. Apparently the fact that the wheels get all their power from an electric motor makes it definitely not a hybrid no sir, despite the fact the cars have tiny ass batteries and the single source of power for the whole system is the ICE. Also they somehow have worse fuel efficiency than many contemporary ICEs that cost quite a bit less. I don’t understand Nissan.

daq ,

Where is this?

Poot ,
@Poot@discuss.tchncs.de avatar

They’re currently working hard for a way to make it subscription.

helenslunch ,
@helenslunch@feddit.nl avatar

up to 12 degrees cooler

okay but why? What tangible difference is that going to make?

Also is this on the interior or exterior?

Donut ,

12 degrees on roof, 5 on car seat. It’s in the article

helenslunch ,
@helenslunch@feddit.nl avatar

Never heard of Asahi.com and not about to click on it. But thanks for getting that information.

DamienGramatacus ,

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