harold1946 wrote:
rgatijnet1 wrote:
pianotuna wrote:
Hi,
Glass is not magic--but when light hits a surface it changes frequency and becomes heat. Since there are no "perfect" reflectors, quite a bit of light energy becomes heat. Glass is NOT a good transmitter of heat. Remember, too, that light waves of all frequencies will bounce off the surface of the glass. That adds to heat inside the RV if the reflective layer is inside. So it is better to cover the outside of the glass--preferably with an air gap if that can be arranged.
There is a reason why Florida is called the Sunshine State. We get plenty of it and we learned the best way to deal with it a long time ago. If you think you have a better way, go for it. I'll stick with what works the best, after trying the other methods. :B
I guess all of the millions of homes, in the sun belt, with sun shades on the outside of the windows must have wasted their money. Its simple high school science.
Then I also guess that all of the thermal pane windows, used in the sunbelt, that allow sunlight to penetrate the first layer of glass before hitting the reflective surfaces that reflects the heat back out are not engineered properly. They have a few engineers that worked on their design and the R values certainly support the fact that sunlight and heat can go through the first glass surface and be reflected right back out. This may be advanced college science.
