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Re: Tinting is stoopid Posted by PGAero [Email]  (#1143) [Profile/Gallery]
(more from PGAero) on Fri, 13 Apr 2007 16:20:41
In Reply to: Re: Tinting is stoopid, Jon in MN, Thu, 12 Apr 2007 23:01:07 Members do not see ads below this line. - Help Keep This Site Online - Signup |
So, if you had snow on your seats, the car with tinting would keep the snow from melting longer than the in the car without.
Think of it this way. The sun shines X-amount of radiant heat onto the car. A car with tinted windows absorbs a lot of that heat energy at the windows. Some is then transfered into the car (Mostly a convective heat-transfer mechanism once the window is warm) and some is convected back to the air, outside the car.
A car without tinted windows allows a large part of the heat to get inside the car. Once it hits the interior (especially black/dark interiors... including dash boards, etc) it heats up those surfaces. Those, now hot, surfaces convectively transfer heat into the air within that car, and those surfaces are hotter than the ones inside a car with tinted windows because more heat energy actually got to the interior surfaces.
So, Eiron, your story about tinted windows melting snow on the exterior of the car actually strengthens the case that more heat ends up outside the car if the windows are tinted. If more heat is dissipated outside the car, then the interior is cooler.
Would you rather have hot windows, or hot seats? At least windows can dissipate heat outside the car. Seats can't. Unless you have reflective interior pieces which reflect the sun's rays back outside (which, admittedly, is achieved to a small extent by light-colored interiors), intercepting the sun's energy at the window is a better way than letting it end up inside the car.
In some cases, like when there's snow on the car, the snow acts as an exterior reflector, whereas the tinting acts as an interior heat absorber. A car with tinting will melt the snow sooner, allowing for quicker interior heating. When there is snow on the car, I doubt if some interior warming is a bad thing.
FYI, my White on Black 9000 Aero doesn't have tinted windows. The seats get hot if I Park in the sun. It's nice in the winter, and no fun in the summer.
In some cases, a car with light interior might end up cooler without tinted windows. Generally speaking though, you can't categorically say that tinted windows make cars get hotter on the inside. Having the tinting take the brunt of that sunlight protects your leather. Most modern glass has high levels of UV protection built-in without much tinting, but more is better.
Surely, tinting windows is largely an aesthetic practice as much as it is a practical option.
Cheers,
~Peter
posted by 75.26.200...
_______________________________________ Current: '03 9-5 Aero Wagon, 5spd, Polar/Black Past: '06 9-5 Combi, AT, Polar/Black '04 9-5 Aero Wagon, AT, Nocturne/Granite '03 9-5 Aero Wagon, AT, Steel/Charcoal '00 9-3 Viggen, 5D, Silver/Black '93 9000 Aero, 5MT, Cirrus/Black (Owned this one twice) '86 900 SPG, 5MT, Edwardian/Buffalo Grey
, Fri, 13 Apr 2007 16:20:41 <-- Viewing This Message
, Sun, 15 Apr 2007 08:29:05, Fri, 13 Apr 2007 14:03:44
, Thu, 12 Apr 2007 16:18:09, Tue, 10 Apr 2007 18:06:22
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