this post was submitted on 28 Aug 2024
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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.

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[–] rolling_resistance@lemmy.world 0 points 2 months ago (2 children)

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

[–] tb_@lemmy.world 0 points 2 months ago (2 children)

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

(Jokes aside, I do agree with your sentiment)

[–] mysticpickle@lemmy.ca 0 points 2 months ago

Why did you post a picture of an empty street?

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[–] AgentGrimstone@lemmy.world 0 points 2 months ago (1 children)

Neat. Now paint the inside.

[–] Fedizen@lemmy.world 0 points 2 months ago (1 children)

so it radiates heat into the vehicle?

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[–] Fedizen@lemmy.world 0 points 2 months ago (5 children)

wouldn't this also work on buildings? pavement?

[–] Syd@lemm.ee 0 points 2 months ago

No, only Nissans. It says right there.

[–] MenacingPerson@lemm.ee 0 points 2 months ago (2 children)

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

[–] XeroxCool@lemmy.world 0 points 2 months ago* (last edited 2 months ago)

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.

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[–] Alexstarfire@lemmy.world 0 points 2 months ago (6 children)

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: https://www.businessinsider.com/death-ray-skyscraper-is-wreaking-havoc-on-london-for-a-few-totally-insane-reasons-2015-7

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[–] Appoxo@lemmy.dbzer0.com 0 points 2 months ago (2 children)
[–] Donut@leminal.space 0 points 2 months ago
[–] Noodle07@lemmy.world 0 points 2 months ago

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

[–] frezik@midwest.social 0 points 2 months ago (1 children)

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

[–] herrvogel@lemmy.world 0 points 2 months ago* (last edited 2 months ago) (2 children)

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.

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[–] Poot@discuss.tchncs.de 0 points 2 months ago

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

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