Comment on Awnings: a simple cooling tech we apparently forgot about
RunawayFixer@lemmy.world 3 months ago
These things are technologically obsolete imo. The same result can be achieved with glass coatings, while requiring no extra work to install/maintain or replace these appendages.
These awnings work against losing heat to the night sky, the same effect of which can be achieved with anti emissive coatings that reflect heat radiation back inside.
The awnings also work against the sun when it’s high on the sky, for which there are now anti solar coatings which will reflect more light from certain angles.
Nostalgia is nice, but the modern solution is easier + cheaper to install and maintain.
A tldr image: www.agc-glass.eu/…/diagram-coatings leaflet.JPG?i…
Longer promotional article: www.agc-glass.eu/en/…/energy-saving-glass
echodot@feddit.uk 3 months ago
You haven’t watched the video have you?
RunawayFixer@lemmy.world 3 months ago
I’m afraid to admit that I have not.
echodot@feddit.uk 3 months ago
There’s literally a whole section on glass coatings. But he makes the point fairly reasonably that in large parts of the world the climate is extremely seasonal and so you don’t necessarily want glass coatings because they affect the glass all year round. Is a good point really perhaps you live in a temperate climate and so are not as cognizant of this.
The curtains bit is especially stupid because obviously curtains heat up and then radiate that heat back into the room so no they don’t block heat they block light. If you want it to be dark then you have curtains if you want it to be cool they don’t do anything.
RunawayFixer@lemmy.world 3 months ago
Well, I hate to disappoint you, but curtains work for energy savings. If you are open to changing your mind, here’s an explanation: thermal-engineering.org/thermal-curtains-material…
You always want glass coatings on outside window glass, no matter the climate. Depending on where you live, you want different coatings obviously, but coatings are essential in modern glass panes.
And since you seem to be entirely unaware of what already exists in the construction industry, here’s another article with a bit more explanation: en.aaglas.nl/producten/warmtewerend-glas. A low zta will stop a good portion of the summer sun, while a high lta will still allow through a lot of light from low angles (including from the weak winter sun). Select glass that has a high lta/zta factor and you have glass that is good both in winter and in summer in northern Europe. The Netherlands is at lattitude of about 52°, while most Canadians live a few degrees south of that, so these same solutions would work there as well.
racemaniac@lemmy.dbzer0.com 3 months ago
Lol, you’re bothered by him not watching the video, and now you’re not reading his comments XD. He already said in the previous comment there are glass coatings that work dependent on the angle of the sun, so coatings that will have different effects in different seasons, so he already addressed the possible issue of glass coatings working all year round, and said that according to him it’s not an issue if you choose the right coating.