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‘We don’t need air con’: how Burkina Faso builds schools that stay cool in 40C heat
(www.theguardian.com)
this post was submitted on 03 Mar 2024
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People have been building passively-cooled buildings for centuries. Cant see any data for how much they cool buildings by, but this article mentions buildings in Dubai reducing their energy use 23% to keep an equivalent building cooled when designed to use passive cooling: https://www.sciencedirect.com/science/article/pii/S209526351400003X
I’m not saying passive cooling doesn’t work, I’m aware of convection cooling systems, I’m just saying the article talks all about highs and doesn’t give any other data- is it capable of cooling the air below ambient? Is it simply allowing air to not creep above ambient? Does it generate measurable breeze?
I suspect it’s a combination of bricks being a heat sink and vents allowing convection currents, but I know what 100+ feels like in my garage with all the doors open and it’s still brutal.
Also how well do these cooling methods work with humid air.
According to this, the way to go in humid environments may be to make "green" roofs. I am not a scientist or scholar so I don't know if that piece is credible or not and I only did a cursory scan of it. Maybe someone that knows more is willing to enlighten us.