Comment on Nissan develops paint that keeps cars cool in summer heat
Buffalox@lemmy.world 2 months ago
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.
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 interring with visibility.
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:
…tv2.dk/2018-05-24-bliver-en-sort-bil-varmere-i-s…
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.
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.
Sorry can’t find it, all I can fins 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.
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.
Ferris@infosec.pub 2 months ago
trick is to paint the windows
Buffalox@lemmy.world 2 months ago
Also this is problematic:
espentan@lemmy.world 2 months ago
And an ounce is nowhere close to a decimeter!
Buffalox@lemmy.world 2 months ago
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.