Quote:
Originally Posted by evolutionmovement
SPD Smartglass. I just wonder what it costs. I'd love to use it, but doubt it will be financially practical.
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Its not terribly expensive. Its used in ALL the windows in a data center I toured. As they give the tour its all whited out like frosted and as they talk about pieces and parts they flip the switches and you're standing in a glass hallway and can see the whole complex.
It is a little heavier than regular window pane glass, but its the same thickness as wind-screen glass. I doubt it has the same fracture quailities though.
To regards to the OP.
Glass is EVIL.
Glass has the horrible ability to allow light to pass straight through the first time and then after it hits something and turns infrared(virtually all light does this after striking a solid object) the glass will not allow it through. Don't believe me hang a plate of glass in front of an IR camera and all its going to see is whats behind it. IR perfectly reflects off glass. So that 12-18 watts per square foot of electromagnetic-radiant energy once in does not get out unless it can convect through a surface or leak out.
Even the difference between solid black paint and white paint won't really matter. The paint has the ability to radiate heat away from the surface and also the IR spectrum bounces off the car paint(black absorbs alot of it, but glass blocks ALL of it from escaping so all of it gets converted to heat energy).
The interior of the car will climb in temperature MUCH faster than the paint. So if the time in question is short enough for the car not to reach its current max temperature your best bet is to rip the insulation out to allow the car to convect heat
through the black paint. But you don't want to rip insulation out otherwise when you have the heat on in the winter heats going to convect out very quickly.