Christophe wrote:Ahmed wrote:It is easy to answer the first question, since light and heat are two rather distinct things: there are glazings that stop part of the infra-red radiation and let pass the visible spectrum (it is a matter of wavelength ).
Yes these are low emissivity glazing, except that, generally (in individual housing at least, on skyscrapers it is less safe), they are mounted the other way around: to keep the IR indoors in winter...
So I do not think the answer is so obvious ... but it all depends on the drop in brightness that we want to support ... today most people want everything for nothing: the benefits without the disadvantages ... It gets pretty painful ...
This is perhaps a possible solution: reversible glazing ... except that it is above all the heat that we want to manage: that it comes in winter but not in summer, while the light must come in summer and winter .
Currently, to stop the heat we close the shutters during the day, which forces us to turn on the lights!
adding: My children often play with toys that change color depending on the ambient temperature. One solution that seems interesting to me would be to construct buildings whose roof and walls change color depending on the temperature.
When it is hot, roofs and walls lighten, and vice versa when it is cold. How about a tile with this property?
Technically, since we make toys that have this property, we should also be able to make construction materials!
Would it be very interesting to test on a small building covered with photosensitive materials, such as a garden shed or garage to see the effect? Are there tarpaulins or glass sheets of this type?