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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.

Hugin ,

Anything to not add a cooling system to the ev batteries.

DudeImMacGyver ,
@DudeImMacGyver@sh.itjust.works avatar

Forget Nissan but I’ll take the paint.

LucidNightmare ,

I just love how humans will do anything other than actually focus on fixing the problem. Love it.

nexusband ,
@nexusband@lemmy.world avatar

So… You want to turn off the sun? This has nothing to do with climate change, the sun hasn’t changed intensity in a few 100 years, so sun makes things warm

werefreeatlast ,

Like reducing the number of cars.

Ohh too much traffic! 🤔 Let’s expand the freeways until you need a freeway to cross other freeways.

ATDA ,

12 degrees? I guess that’s cool but still well within egg frying temperature around here.

weew ,

Nissan invents white paint

Cethin ,

If it’s like this stuff then it’s more than just white paint.

ArmokGoB ,

If it’s like that stuff then they didn’t invent it.

Cethin ,

Well, they would have invented the specific formulation they’re using. I’m sure it’s not exactly like this but I wouldn’t be surprised if it’s the same concept with microbeads.

No one invents anything totally new. It’s all adding on to what others have made in the past. Nothing has ever been created from scratch.

DamienGramatacus ,

Unlocked via 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.

ayyy ,

Hello and welcome. The purpose of this forum is for people to share articles, and then discuss the contents of the article they just read. If that’s not what you’re here to do, please spend your time elsewhere.

helenslunch ,
@helenslunch@feddit.nl avatar

LOL I’ve been here for years, I don’t need a welcome, but I appreciate the sentiment.

I will spend my time when and how I choose, thanks so much, have a nice day!

Poot ,
@Poot@discuss.tchncs.de avatar

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

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?

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.

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?

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

Cethin ,

It can reflect it out to space. It is possible to make paint the keeps things below ambient. Obviously you’re correct, but only for things not facing upward. Upward facing things will bounce the energy back away from Earth.

youtu.be/N3bJnKmeNJY?si=drxjIM8U_MAcQLQH

blockheadjt ,

Ok, so don’t paint it on any concave surfaces. Most buildings have flat or convex surfaces.

Cethin ,

youtu.be/N3bJnKmeNJY?si=drxjIM8U_MAcQLQH

Fedizen ,

great video. Its wild that it is functioning as an IR emitter and just beaming things into space.

LaunchesKayaks ,
@LaunchesKayaks@lemmy.world avatar

Got in my car after work yesterday and it was 102F inside. It was awful

terminhell ,

Lucky! I’ve seen 150 here in Louisiana.

And even higher when I lived in the Mojave desert. Like, if you didn’t leave a window cracked there’s a real chance your windshield cracks.

LaunchesKayaks ,
@LaunchesKayaks@lemmy.world avatar

I live in Pa, so our weather isn’t crazy hot like the south. I can’t imagine the weather where you’ve lived. 85F is my upper limit. Anything over makes me feel like I’m going to die.

skulblaka ,
@skulblaka@sh.itjust.works avatar

I was working outside in 96F and nearly 50% humidity within the past week.

If we continue trying to work outside during the middle of the summer day, as our summers get hotter every year, people are going to start to die.

I wonder how many it will take for America to adjust. I assume a lot more than I’m comfortable with.

LaunchesKayaks ,
@LaunchesKayaks@lemmy.world avatar

I was outside in 96F yesterday herding my ducks for 10 mins and my whole night was ruined because I got so sick from the heat.

Idk how people who work outside constantly do it

skulblaka ,
@skulblaka@sh.itjust.works avatar

Box fans and Popsicles, mostly. You get used to it. Doesn’t make it any more pleasant though. I did give myself some pretty bad heat exhaustion at one point earlier this year, that hasn’t happened before.

Syd ,

Must have had you wishing for a nuclear winter.

user1234 ,

There’s no paint on the planet that will make most of their cars cool.

XeroxCool ,

Yeah, the Leaf doesn’t need any help being cool*, they’re as neat as they come

*just don’t mention gen 1 air-cooled battery pack degradation

AgentGrimstone ,

Neat. Now paint the inside.

Fedizen ,

so it radiates heat into the vehicle?

Sculptor9157 ,

How else are you going to entice passengers to take off all their clothes?

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