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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.

LucidNightmare ,

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

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

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?

MerchantsOfMisery ,

Windshield screens are the low-tech but far more effective method of keeping a car’s interior cooler, typically by at least 20F when it’s really hot out. Slightly inconvenient but unlike this paint, a windshield screen will actually make a difference.

nyctre ,

Mythbusters did an experiment with a black car and a white car hitting in the sun. The black car was 12 degrees Celsius hotter. Claiming that the paint makes no difference is such a weird take. I thought this was common knowledge as well as many people I’ve met avoid darker colours in summer and such.

Telorand ,

Speaking of huge and inconvenient, if you’re a cheapskate, just get a car cover. Always helped my motorcycle.

Silentiea ,
@Silentiea@lemmy.blahaj.zone avatar

I bet the interior of your motorcycle was WAY cooler after that.

Telorand ,

It was! Also, the exterior wasn’t too bad, either

IndiBrony ,
@IndiBrony@lemmy.world avatar

Summer was hard on me in my teenage goth years.

Can’t really get many light shades of black.

Silentiea ,
@Silentiea@lemmy.blahaj.zone avatar

https://lemmy.blahaj.zone/pictrs/image/d1f495eb-5066-435d-9ed9-5912e573cbda.webp

MerchantsOfMisery ,

What’s the cost (financial and environmental) of repainting a car vs using a windshield visor that’s at least twice as effective at reducing heat? Painting a car with this stuff would cost thousands of dollars compare to $20 for a visor.

nyctre ,

I’m not talking about repainting anything, why are you moving the goalposts? Just buy a white car AND use a visor, what’s wrong with that? And in the future, if this stuff is actually good, maybe all cars can come already painted with it?

DarkThoughts ,

I don't care about your cage's interior temperature. Until we can ban cars from cities I'd welcome such paint, because all those shit heaps of cages standing on public space still end up heating up the places around them, further inconveniencing everyone else even more.

Silentiea ,
@Silentiea@lemmy.blahaj.zone avatar

Do they? I mean yes, because the ICE engines just constantly dump a ton of heat out, but does a parked car? Is there data on that?

DarkThoughts ,

Yes, just like "rock / gravel gardens" or whatever you call them in English, which are now banned in a lot of places for one reason being that exact same phenomenon of contributing to the urban heat island effect. They soak up the heat from the sun like a battery and then slowly release it into their environment, keeping it warm. It's super obvious as a pedestrian.

MerchantsOfMisery ,

You realize the emissions saved from reduced AC usage would also reduce the heat island effect, right? Sun visors like this are good for public spaces.

Also, it’s more environmentally friendly to have people use visors than repaint their whole car.

DarkThoughts ,

That still does not make me care about your cars interior temperature.

MerchantsOfMisery ,

That’s okay, you seem pretty simpleminded so I don’t exactly expect you to understand the issue. I understand the anti-car sentiment but you’ve clearly gone off the deep end yet you still seem to think it matters to other people whether you care about issues like this.

DarkThoughts ,

That's okay, you seem pretty simpleminded so I don't exactly expect you to understand the issue.

Projecting much? Love the insults btw. Really drives your point forward.

I understand the anti-car sentiment but you've clearly gone off the deep end yet you still seem to think it matters to other people whether you care about issues like this.

You seem to care a lot. It's also again projection and highly ironic since you were the one who apparently thought people care about your car's interior temperature.

KingThrillgore ,
@KingThrillgore@lemmy.ml avatar

Wanna know how you’re right? Look at the FLIR photo above and note where the heat is at its highest

remer ,

And that’s 12 degrees Celsius (21.6 degrees Fahrenheit)! What kind of garbage article doesn’t include the units!?

MHLoppy ,
@MHLoppy@fedia.io avatar

Or 53.6 degrees Fahrenheit if you believe whoever wrote the page for Nissan lmao. I guess they just typed it into a converter with no context, and the converter spat out an answer amounting to "if your thermometer says it's 12 degrees C, that would be 53.6 degrees F"... but without that context.

ILikeBoobies ,

How would you know it’s wrong if you don’t know fahrenheit

MHLoppy ,
@MHLoppy@fedia.io avatar

Fair point, but I guess I would hope that the person being paid to write the copy would check it, since getting that right seems like it's part of their job description ¯_(ツ)_/¯

AA5B ,

That’s why it’s a better choice to just clearly identify the units and not attempt to be clever about converting for a particular audience

BakerBagel ,

There probably wasn’t even anyone who actually wrote it. Fed it into some LLM to generate the page and no one actually edited it to make sure everything made sense

Allero ,

I agree clarification never hurts, but the entire world except for ~4% of highly entitled population will read that right.

IamAnonymous ,

There’s no need for that attitude though.

Allero ,

Fair, my bad! Sorry if it was offensive.

I just got a little sick of all the Fahrenheit (and also Imperial) domination around here. This, in turn, is often left without clarification, despite the system being way less popular.

Lemmy as a platform is extremely America-centric, despite having tons of folks from everywhere else, which is aggravating in the long run. World really, really doesn’t all revolve around land of the free.

rottingleaf ,

Being from Russia, I’m fine with people using the units they are more confident with or used to.

(Not specifying units may be a bit confusing, but then people here don’t say\write “it’s 20 degrees Celsius” either.)

Allero ,

Russian-languaged media is not commonly consumed by someone living under imperial/Fahrenheit system, so it’s only natural.

For English, it might make sense to at least always add Celsius in parentheses, unless it’s highly regional news.

Also, привет русским леммиводам :D

rottingleaf ,

Превед.

Allero ,

😂

Zip2 ,

Metric ton of folks or colonial? Please clarify.

I agree though, that’s why I like posting conversions from time to time on other posts that are US defaults.

DarkThoughts ,

The attitude comes from Americans expecting the world circling around them.

IamAnonymous ,

The comment asked to list out the units which is a common thing to do. You don’t list out a scientific value without its units. They didn’t say list it out for Americans. Maybe the study was done in the US and they listed it in F. How would you know? So who came in here with an attitude?

DarkThoughts ,

No, they converted it to Fahrenheit because that's what they use & expect to be clarified upon.

IamAnonymous ,

No, they first listed the units which is Celsius and then converted it themselves and didn’t excepted it to be converted. No one is complaining that it’s not in F but rather that the units are missing.

cheddar ,
@cheddar@programming.dev avatar

Given that a lot of English language media are either located in the US or target the US market, I’d expect the value to be expressed in Fahrenheit unless stated otherwise.

Allero ,

Original article is about Asia, and Lemmy is an international platform, so neither applies here

I don’t mind some actually regional things presented in whatever system they use in there - although I’d much prefer if we’d all go metric already. C’mon!

cheddar ,
@cheddar@programming.dev avatar

The original article is not about Asia, it’s about a technical innovation. Regardless, although we’re on an international platform, it’s easy to see that many topics are US-centered, and many sources too - regardless of the subject.

Allero ,

“Asia&Japan Watch” is right under their name.

This topic is not centered in the US by any metric. It’s just an example of a Lemmy bias.

cheddar ,
@cheddar@programming.dev avatar

a lot of English language media are either located in the US or target the US market

or target the US market

So regardless of the website’s name or origin, it could be an English language outlet targeted at the US audience. Which is quite common. Which is why I explicitly added this remark to the comment you initially replied.

So why are we back here? What exactly are you trying to prove? All I said that I’d expect a value to be expressed in Fahrenheit unless stated otherwise. I didn’t say that you should do that, or that’s somewhat objective. I was simply arguing that despite only ~4% of population using Fahrenheit, it has much more influence due to the listed factors.

DarkThoughts ,

What kind of garbage article doesn’t include the units!?

What for? Almost no country uses Fahrenheit.

Telorand ,

If that’s how scientists did science, we’d have mountains of confusion. “Eh, most people will get it. Good enough.”

Information like this is global. It’s a single “C” for clarity. That’s not an unreasonable ask.

Silentiea ,
@Silentiea@lemmy.blahaj.zone avatar

You need the ° or else your just making errybody mad

Telorand ,

Maybe it’s a mental reading thing. I always “hear” the word “degrees” in my head when I see °, so I like the extra effort to include that, but I also know that colloquially, people are a lot lazier.

DarkThoughts ,

This is a news article, not a study, which would've more likely used Kelvin, which would be still 12 degrees. It's for everyday people, which almost all of which use Celsius to measure temperature. People outside of the few countries who use Fahrenheit don't get confused about it because it's literally the only measurement they use in their life. If you travel outside the US you will find that no one adds Fahrenheit conversations anywhere and that pretty much all temperatures are listed in Celsius.

Telorand ,

You’re arguing that it’s not worth the effort to be clear over a single letter, from a place of what appears to be some American-oriented xenophobia. Not a good look.

But to your point about travel, that isn’t analogous. This isn’t an American tourist going to another country, where the temperature context is Celsius. This is an article disseminated globally; by its very nature, the context should be agnostic of locale, and so it would behoove the authors to be clear (again, with a single letter) so that there is no confusion.

DarkThoughts ,

Calling out US entitlement isn't xenophobia. That self applied victim complex is just proving my point.

This is an article disseminated globally

Anything on the internet is inherently accessible globally, unless there's a geo-block in place. That does not mean that the things on the internet have to inherently be tailored to US standards or with US viewers in mind. The clearly not US sounding website "The Asahi Shimbun" even specifically has the subtitle "Asia & Japan Watch", which should make it more than obvious that this is not a US focused media. The only confusion coming up here is when you have to assume US units being used everywhere else, which simply is not the case.

Telorand ,

Again, you’re quibbling about the letter C for the sake of clarity and calling that US entitlement. You’re welcome to die on that hill, but it seems like a silly one to die upon because you have some beef with Americans.

DarkThoughts ,

Again, you're quibbling about the letter C for the sake of clarity

No, that's what you are doing. lol
I'm telling you that the letter is irrelevant for the majority of people in the world because we all already assuming the correct units of temperature and you seem to take an issue with that fact.

Telorand ,

Me: “We should be clear and add a C, so we know for sure what units we’re dealing with and don’t make assumptions.”

You: “No, that’s American-centrism! We don’t need to include them! Most of the world already knows what they mean!”

DarkThoughts ,

Thanks for proving my point. lol

Telorand ,

TIL “inclusion” is ethnocentrism. 🤡

DarkThoughts ,

Yeah, that's totally what's been said. At least you already wear your clown badge proudly.

AA5B ,

I’ve definitely seen some non-US news sources convert to US common units based on my locale. I’d much prefer they just clearly state what they’re using, especially like here where it’s just a matter of adding one character - similar to time where it’s adding three characters for the time zone.

It’s not even necessarily a US centric view asking for it - taking the high road here: anyone in the US interested in science is used to seeing both common and metric units. it’s really no big deal to switch back and forth. Just be aware there are multiple possibilities and indicate which you’re using.

Zip2 ,

You’re right. Everything should be in degrees kelvin by default. Problem solved.

remer ,

I totally agree

Throw_away_migrator ,

I will not stand for this! Rankine will be the standard! It will confuse and infuriate everyone equally. Truly the fairest of outcomes.

ZealousSealion ,

Why would it be anything else?

It’s clearly too low a number to be °K. And since the only two valid units of measurement for temperature are Kelvin and Celsius, it must be °C.

remer ,

A differential temperature of 12C is equal to a differential temperature of 12K…… You don’t take the offset into account for differential temperatures.

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