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.
Is this revolutionary invention called white paint?
This is because the substance artificially reproduces a process known as radiative cooling on the painted surface. A typical example of radiative cooling is a phenomenon where the ground releases heat to cool off.
Nissan worked with the Chinese enterprise Radi-Cool as it specializes in the creation of radiative cooling technologies and materials.
(…)
However, one obstacle remains: the paint is six times thicker than the usual coating on the car body surface. The substance is also more expensive, which would add to the total cost of a new vehicle.
That, in turn, makes it difficult for the coating material to be utilized for mass-produced passenger automobiles.
For this reason, Nissan is looking to commercialize the paint on ambulances and other specialized vehicles as the first step.
However, one obstacle remains: the paint is six times thicker than the usual coating on the car body surface. The substance is also more expensive, which would add to the total cost of a new vehicle.
That, in turn, makes it difficult for the coating material to be utilized for mass-produced passenger automobiles.
With 6 times thicker paint there’s a chance it also wouldn’t rust like a proper Nissan and we can’t have that, now can we
Thicker paint so more chipping resistance? Where do I sign up? 😮
At the… Ugh idk. They all have super thin paint nowadays. Especially the more expensive brands.
…the paint is six times thicker than the usual coating on the car body surface… looking to commercialize the paint on ambulances and other specialized vehicles as the first step.
This is the best part of the article.
After driving ambulance during Australian summers, in the Great Victorian Desert, this would assist so much with operating temperatures. A literal life-saver, if the AC ever broke, also.
It’s staggering to me the number of black cars being sold in hot countries like Australia. Not to mention just how hard they are to see against the background of a bitumen road.
In some countries, you get a penalty on insurance depending on the car color, with maximum penalty reserved for black cars.
How is it with silver and grey? Do you get a heavy penalty for them too? If it rains, snow and/or are foggy can it be very tricky to see silver and grey cars.
I’m not really sure. I think white and red are the cheapest.
Growing up I remember hearing that red cars were the most expensive for insurance, as owners of red cars had the highest incidence of speeding and dangerous driving.
Red is the cheapest? It’s also a rather nice color, no?
White is fine too.
Heavy rain or snow all that matters is if the lights work!
Source: we get both around here
Okay that’s racistLol. Wouldn’t want to see that applied to people although I can imagine the rhetoric.
Everyone wants to be Mr Black.
Vantawhite
Veeerry reflective white paint. Probably not street legal
That paint’s name…?
A mirror, the car is now mirrorball.
Nissan also detects you having sex in the car and phones the info home.
My wife’s going to be pissed when she gets that call…
I’m curious where that’s from? News, or you made up from privacy policy?
Mozilla’s analysis if the policies, see my other comment in the thread.
Okay, I found one.
But I guess it’s to clarify what kind of data could possibly be collected and not that they actively collect and use them. I guess Ford can do that too, although they don’t specify in their privacy policy.
They’re not interested in your sexual orientation.
So fucking glad I got my car before they added all this shit.
It’s going to prevent me from getting any EVs that come out that I can afford too. I’m not signing a fucking privacy policy for a car.
Yeah, EVs are the worst kind of the privacy-invasive cars I agree
My car has an antenna for a network that no longer exists and I’m so happy about it
But, like, why is that listed then? Why would Kia and Nissan say they collect information on your “sex life” and “sexual activity” respectively of they’re not? What’s to gain from keeping the window open if you’re using it?
What ahaha.
Their privacy policy includes a provision that they can use the cameras and GPS to infer things such as sexual orientation, so yeah.
While this fucked up, documenting sexual orientation is not exactly recording sex. Someone could simply use GPS and see that the only place in the area that’s open is the gay bar and infer from that, or even lip reading.
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You know, we can use vision ai services to do that now, dang yo time flies
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no.
Not a
hot dogbird
Which cameras?
I don’t think they have interior cameras (although other manufacturers do), but the front and backup camera feeds provide plenty of information as well.
Then there’s also this, if you need any more reason to be concerned.
I don’t think they have interior cameras
Can just stop there. Unless people are banging on the bonnet, not sure what the point is.
If you read the linked article you will find that exterior cameras feeds are plenty invasive enough.
I don’t disagree, but this is what was said:
Nissan also detects you having sex in the car
Unless there are cameras in the car then no.
Nissan invents white paint
If it’s like this stuff then it’s more than just white paint.
If it’s like that stuff then they didn’t invent it.
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.
I was hoping I’d see nighthawkinlight in the wild here.
Only reason I’m here lol
Nasa have developed a paint for spacecraft that can be any color including black and still have the properties of white paint. It’s only colored in the visible part of the spectrum but allows IR to pass right through.
Although you do need to paint the vehicle white initially as an undercoat.
Is it white paint?
And that’s 12 degrees Celsius (21.6 degrees Fahrenheit)! What kind of garbage article doesn’t include the units!?
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.
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
How would you know it’s wrong if you don’t know fahrenheit
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)_/¯
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
What kind of garbage article doesn’t include the units!?
What for? Almost no country uses Fahrenheit.
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.
You need the ° or else you’re just making errybody mad. Or maybe that’s just me.
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.
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.
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.
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.
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.
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.
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.
You’re right. Everything should be in degrees kelvin by default. Problem solved.
I will not stand for this! Rankine will be the standard! It will confuse and infuriate everyone equally. Truly the fairest of outcomes.
Reamur FTW!
I totally agree
Kelvin and Celsius are the same scale with a different zero point anyway.
I agree clarification never hurts, but the entire world except for ~4% of highly entitled population will read that right.
There’s no need for that attitude though.
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.
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.
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.)
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 российским леммиводам :D
Превед.
😂
The attitude comes from Americans expecting the world circling around them.
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?
No, they converted it to Fahrenheit because that’s what they use & expect to be clarified upon.
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.
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.
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!
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.
“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.
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.
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.
A differential temperature of 12C is equal to a differential temperature of 12K…… You don’t take the offset into account for differential temperatures.
They’re currently working hard for a way to make it subscription.
I seriously doubt that, tests have been performed comparing black and white painted cars, and the difference was insignificant. The heat buildup in a car is due to the the sunlight entering through the windows.
trick is to paint the windows
Also this is problematic:
12 degrees cooler
But by what scale? If it’s Flaffenfeit, it’s just half an ounce!!!
And an ounce is nowhere close to a decimeter!
I bet Kelvin couldn’t agree more. But to be fair, he started a bit on the negative side. And called everything above that plus.
A bushel of paint should be enough to cover 12 roods.
Dammit, I needed 5.5 qt paint to cover one parking spot
Our European friends are going to need you to convert that to kilometers.
To add to your comment, ceramic window tint is a night and day difference. My steering wheel, shifter, and all couldn’t be touched after work. I wore driving gloves to get home. With the tint there slightly warm and the AC doesn’t take half the drive to catch up, the car is cool by the first stop light.
Maybe they should sell cars with that by default instead?
Is ceramic tint different from ordinary tint?
Yes. It contains ceramic nano particles that reflect UV without interfering with visibility.
edit: I meant IR. But it reflects both.
Could you link one of these? All the ones that I can find say there’s quite a bit of a difference
OK I’ll link the danish test, this test is done with 2 cars that are identical, except for the color of the paint:
Konklusionen er altså, at den sorte bil ikke varmes mærkbart mere op end den hvide.
Translation:
The conclusion is that the black car does not heat up noticeably more in the sun than the white.So it does a little bit that you can measure, but not enough to really make a difference.
Det skyldes ifølge Christian Bahl, seniorforsker hos DTU Energi, at bilerne opvarmes gennem ruderne.
According to Christian Bahl senior researcher at DTU energy, that is because the cars are heated through the windows.
(DTU is a well recognized institution for scientific research in Denmark.)Maybe the fact that the experiment was done when outside were only 20-22 degrees made the difference less noticeable? Otherwise I can’t explain why all the other tests I’ve found said the difference was 5-10+ degrees.
This is the t-shirt one I remember.
From
https://mainichi.jp/english/articles/20230726/p2a/00m/0sc/014000c
Sorry can’t find it, all I can find in english are some where the data isn’t clear.
If a white car has brighter interior it will stay slightly cooler, I cannot find a test where everything is the same except the color of the car.
What I can say however, is that the test I saw was performed in Denmark. It’s possible countries with hotter climates may observe some difference?Obviously the main source of heat is what enters through the windows, and how much is reflected out again does have an influence.,
If a white car has white seats and interior, they will obviously not heat as much as black seats and interior.
The white color on the exterior will also reflect more light into the car, except maybe at noon.
Edit PS:
I linked the danish test in a new response.Obviously the main source of heat is what enters through the windows, and how much is reflected out again does have an influence.,
A lot of things seem obvious but turn out not to be, or not as much as I’ve first thought. Hence the usefulness of data and studies rather than mere reasoning.
If you saw my other post, this is absolutely confirmed by data.
They should install automated blinds like some high end luxury cars have except make them out of that silvery windscreen sunshade stuff.
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I just love how humans will do anything other than actually focus on fixing the problem. Love it.
I would argue that the new paint could help alleviate the issue, since it would incentivise people to decrease use of the AC. My concern then would be how polluting is the production of the new paint compared to the current version.
My immediate thought was to wonder if this would help give kids who get left in a car by mistake have more of a fighting chance
Ah yes. Why reduce the temperature of your car by 12 degrees when you can just alter the entire planet instead.
Lol
Like reducing the number of cars.
Ohh too much traffic! 🤔 Let’s expand the freeways until you need a freeway to cross other freeways.
Just one more lane will fix traffic bro
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
Lol
Uhh, what? The problem of things getting hot in the sun?
Blow up the sun. Easy.
I like blowing things up.
Heat is the real issue. So much wasted energy
Lol
You’re right, running AC more off of internal combustion engines is a better path to the solution.
Lol
Forget Nissan but I’ll take the paint.
Yeah but 350Z tho
I mean, if you’re a middle age bro with a retail supervisor job compensating to show off to teen girls, I guess.
I see, thanks for pointing out that I’m a stereotype. FML
TBF, the 350Z was the sports car to have when I was a teenager. Not my fault that I can only afford one just now in my mid-30s, haha. I blame Ronald Regan for screwing over working-class citizens. If I had the money my parents had, I’d be driving an EV by now.
(edit: and FWIW I’m in a happy relationship with an adult woman similar to my age)
There’s a very long list of two door sports cars I’d buy instead of one of those bloated excuses.
I’d like to see that list, cause I’m I’m considering selling the car in a year or two. Requirements: 2 doors, convertable, 300+ BHP, manual transmission, stability control (cause I’m a bad driver lol), under $15K.
Miata, BRZ, GT86, possibly a WRX if you want something more practical.
Already considered all of those before buying the Z. None of them meet my horsepower requirements. And the last time I checked, they don’t make a convertible WRX and BRZ/FRS/86.
I had a 370Z. Basically the same chassis with a bigger engine.
Feels like sitting in a bathtub. It’s got a heavy ass flywheel that makes the V6 feel as smooth as a V8, but with predictable effects on responsiveness. You can cut the fly weight in half and it’s still perfectly good to run on the street without issues.
I traded it in for an Miata NC and never looked back. Sure, the Z has more power, but it doesn’t make good use of it the way a Miata does.
Funny you mention that; I had the opportunity to buy an ND Miata for $5K more. Went with the 350Z instead. Now your comment is making me second guess myself, even though I love how the 350 handles.
It glides through corners so damn well, I can’t possibly imagine it getting any better than this, but you “Miata is always the answer” people always come of the woodwork and make me second guess my decision. The low horsepower figures always got to me. But now I’m thinking that maybe I should have just taken the damn test drive before falling in love with the Z.
Yeah but fuck Nissan
Agreed, but mostly fuck modern Nissan. 90s and 2000s Nissan were cool.
It’s a cool, cool summer.
Twelve degrees what? A degree Celsius is more than twice a degree in Fahrenheit.
State your units, FFS.
I will assume celsius since the IR image shows around 45 and 35 degrees in direct sunlight.
1kg is more than twice 1lb (2.2lbs) but 1C is only 1.8F
And 1m is only 12 crayons.
The scientific consensus is that unless otherwise stated it’s Celsius.
In scientific papers you just write 14° you don’t need to specify the unit.
So I’m just going to use that rule and assume Celsius.
That typo reverses the meaning by being one letter off.
(It had said “diy cooking paint”)Lol
12 degree °C or °F???
°C, which is not bad. Official press release (I think): https://global.nissannews.com/en/releases/nissan-trialing-cool-paint-technology
Neat.
Considering it’s no an American brand I’d say Celsius
Didn’t know Nissan was Scottish
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Might be the most interesting thing Nissan has developed in two decades.
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.
Where is this?
A few car companies seem to be doing that. Toyota(?) here are advertising their hybrid vehicles as “self-charging electric vehicles” instead of a hybrid, even though there’s no way to plug them in and not have them self charge.
wouldn’t this also work on buildings? pavement?
No, only Nissans. It says right there.
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
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.
Oh great so now the rest of the universe has to deal with it. Really just kicking the can aren’t we
Ok, so don’t paint it on any concave surfaces. Most buildings have flat or convex surfaces.
Dude your mom only has convex surfaces
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.
You ever seen that curved building that focused the sunlight into a spot in front of it and melted cars? Lol
You mean the one in the comment that the comment you replied to mentioned and linked to?
Lol oops didn’t click that link. But yes
great video. Its wild that it is functioning as an IR emitter and just beaming things into space.
Is metal paint and concrete paint the same thing? I’m not a painter
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.
Metal paint is concrete paint. Microsoft paint is abstract paint. This comment is metaphorical paint.
You mean metaphorical pain. Jk
Can they develop a paint that reduces the amount of cars? That would be more helpful.
This might match your criteria:
(Jokes aside, I do agree with your sentiment)
Why did you post a picture of an empty street?
I don’t understand, why did you post a random picture of some pavement ?
🙄
