RE: Color-changing roof tiles can absorb, reflect heat with the seasons
Suncat2000 brings up important questions. Solar radiation is 365 days
a year regardless of season. We completed several thousand hours,
several years and seasons to document solar interaction with
buildings as well as development. The information contradicted our
own professional education in the calculator but the accuracy of the
data couldn't be ignored. When the sun comes up it hits the walls
first and impacts the entire building throughout the day.
In July when it was 92 degrees F outside and in the afternoon, we
documents the walls of buildings as high as 198 degree F because of
solar radiation.(not good for a building insulated for a max of 92
degrees F) In February of this year on a 32 degree F day in Canada,
there was snow on the roof but the dark exterior walls were 170
degrees F.
For education only we completed several time-lapsed infrared videos
and there are 3 of them for you to view at the link provided. The 3rd
video shows the impact of solar radiation on the inside of the
building. Right after that there is an image of a radiated cutblock
in the winter. www.thermoguy.com/urbanheat.html
