The 3 Design Strategies Keeping This Building Cool In Scorching Heat
Вставка
- Опубліковано 10 лип 2024
- How can young children study under 35 degree celsius in a school with no air conditioning? Easily, if they're in the Gando School in Burkina Faso designed by Diébédo Francis Kéré.
Kéré said once that his people refer to his buildings as big fridges which he takes as a compliment.
In this 5 minute video, we go through the three passive strategies that Kéré employs to design a building that does not need air conditioning even under scorching heat.
CHAPTERS:
00:00 Introduction
00:30 How Hot are we talking?
01:12 Strategy number 1
02:11 Strategy number 2
03:15 Strategy number 3
04:05 Conclusion
We need much more architects like him!!!
For once, a good, practical, building wins an architectural award.
For those who live in RV campers, they can tell you that adding a shade over the camper makes a massive difference when trying to keep cool. Wondering why this idea isn’t utilized more in the desert southwest of the US and other regions.
On us Mexico boundary they build houses with dome roofs with oculus small window which serves as hot air evaporative.
One can only hope that every video on the Tube has English so clearly spoken. Thank you.
The point with the thick tombe walls is that the heat dispersed at night keeps the rooms pleasantly warm at night instead of too cold due to too quick heat dispersal. This makes optional night time use of these rooms practical as well.
local people solving local problems with global knowledge - thats the past, present and future of human kind.
Outstanding. Think outside the box. Rely on AC and suffer when the power goes out.
That's my favorite kind of intelligent building. Kudos to Diébédo Francis Kéré!
Yes! Diébédo Francis Kéré has gifted this community with a beautiful school building ☮️ I hope more can be built to benefit more children!
This is a great common sense building. Thank you for presenting it to us. The ram used to make those blocks is an easily dismantled UN design that can be welded together in just about any steel fabrication shop. The basic model is powered by one person. No external power source required. The blocks are moist loam with around 3-5% cement and are air dried for a few weeks before being laid. I've been to a course on this tech and it's fascinating. Look up the CINVA ram for more information.
They should do experiments to see if the can handle long term water saturation, if so you could wet the wall and it would be 10-15% cooler. I've been interested in passive homes since 1967 watching real hippies building a house of mud bricks, just as a interest over the years. I tiled swimming pools in the SW USA, thousands of them, in 122 degree F, near the end I would put up a 40'X20' 70% shade, like a knit nylon, and even had 12+ tiny misters. And only swam-coolers at home. I live past the 45th now and think why people don't build houses alike the arcane Russians with a central huge mass of masonry for the wood-stove/oven. The thinks I think of baking or freezing...
Absolutely brilliant ❤❤❤
In SE Kansas we have an average summertime high of 93 with humidity. It's hot. But we pay no attention to natural solutions. We could learn from this design. Save a lot of energy.
This roof structure might not stand up to the storms we get in tornado alley. I would love to see thermal mass get more attention though. Earth sheltered buildings are much safer in a tornado as well benefitting from the thermal mass.
Great information. Thank you!
Brilliant!
Brilliant! I love seeing passive cooling ideas.
I first heard about these grass roots concepts in the Barefoot College Ted Talk. Love this stuff.
Love it!!! Please do more videos on passive cooling designs. Thank you!
And drop the temp by another 5 degrees by planting trees and plants around the garden.
I like the concept. I wonder if that location experiences hurricane force winds. The external roof looks like a wing that could experience major lifting forces in such conditions.
Zero hurricanes there
Glen Murcutt has done similar work decades ago in Australia's Northern Territory, where cyclonic wind forces are a major consideration. It's a different climate with different solutions, but it can work. Look it up.
Theoretically the upper roof would be pushed down onto the lower roof because of the low pressure between them caused by the Venturi effect. Now whether that's really true, IDK. They'd have to measure the pressure above and below the upper roof during windy days.
@X4R2 I was thinking the other way around. Higher airflow above the upper roof resulting in low pressure and slower speeds below the upper roof resulting in high pressure. The pressure difference resulting in the air below the roof going from high pressure to low pressure causing lifting of the roof. Like an airplane wing.
[4:15] Nice job. I'd like to see some paving around the place, to keep the mud and dirt under control :-)
Absolutely.Not paving would add to the heat
02:55 Angles are measured in degrees or radians, and not in degrees Centigrade.
Well spotted! The C was a mistake! Those are meant to be the angles of the sun ☀️
Old Land Rovers used this idea, too, with a second roof layer gapped above the main roof.
She's gorgeous 😊
Go Green!
Nice
The shape of the roof in the pictures is not the same as the shape in the cutaway diagram showing the "Venturi effect". The flat inner roof of the actual building does not have the curve to create a narrowing section and therefore no venturi. Not sure why the explanation is part of this video.
Was there any mention of a white roof?
Sounds good. But we'd love to see some actual historical indoor temperature data taken over a few years time. How hard is that to do?
Yeah. Without this data it's only bla bla bla
I was hoping to find that information here in the comments. Personally, I don't need years of data (although I definitely see the value in that), but a quick example comparing outdoor and indoor temps would spark further interest.
About as hard as flushing the toilet in public restrooms 😞😨
@@iron4ig you don't need data, just asked the kids using the facility.
I live in areas where temperatures soar upto 48c max and 40c on average. One of problem is low air flow. In desert air flow is good.
But biggest problem for us is rainy season with too much humidity. Hot weather lasts for 2 months but humidity weather lasts 6.5 months.
Is there any passive cooling method for humidity free homes ?
I think there's a video from India about cooling without AC. Something about creating a wall of clay cones shaped like bottles.
❤❤
Goood Giirl
What is thermal massing? I’ve never heard of this concept before
@@kevingreen2626 there's no really quick explanation. but videos on mass walls or trombe wall will demonstrate. wikipedia article for "thermal mass" is decent.
Thermal Mass is basically the rate at which energy from the sun is stored in a material and the rate at which it releases that energy without the sun. Thick materials such as solid wood logs, compacted earth, barrels of water and concrete have a high thermal mass as they are very thick and slowly absorb energy and similarly without the sun slowly release it. The materials act as heat batteries and heat exchangers with a slow absorption rate leading to cooler buildings during the day and a slow release rate leading to warmer buildings at night. In some cases builders have used barrels of water and concrete elements inside of a home as heat batteries in extremely cold areas by positioning windows such that the low profile of the sun's rays directly hit these elements inside the home for as long as possible, they absorb the energy and then begin releasing it during the night leading to passive heating. There's a lot more to it than this.
This type of thick wall is called a tombe wall.
This could be adapted to homes as well.
No ac needed. Lol. oHkAy!
What’s the definition of cool. If it’s 95 outside and 85 inside it’s cooler but not cool by most people.
85 with a fan is bearable
If you're a Local, it probably feels pretty good, especially with low humidity.
35degrees hot 😮 😂
I'll keep my air conditioning ... thank you.
Dumb arrogant post. I ll stay arrogant and dumb, thank you
But ....in the storm the roof could get ripped right off ...mm🙄
Looks like 3 white guys central to the brick making process.
The camera is too close to her face.
there's not much achieved here without temperature readings, hourly, for years (this project was apparently built in 2001).
my guess is that in the hot months, this building is between 85-95f inside in the afternoon. it is very uncomfortable and there are lots of flies. because when the nights are hot and humidity is high, there's no hope of keeping a building cooler than the ambient shade temperature.
you'd think a true architect would publish their building's performance specs. not just hype it for what it hopes to achieve.
Unfortunately architecture is not an evidence-based discipline yet. Architects never bother to validate their pre-build claims with data gathering after the project is built. They’re essentially just salespeople, they don’t worry about the project once it’s built.
If they have very cool nights as stated in the video then this region is likely not very humid. One marker of humidity is that the temperature sustains throughout the night as it is held by the moisture in the air.
So you claim there’s no evidence because you don’t have the temperature readings, but then you just make up your own guess? 😂 ok, not to be taken seriously
@@kevingreen2626agree. If the humidity was high there would also be more green vegetation in the area.
@@magesalmanac6424 there's decent climate data for nearby town tenkodogo. this area gets over 30 inches of rain annually, daily low temp is rarely below 70F.
Disappointing presentation, the real key was the passage of air from the classroom to the roof cavity, but NO explanation, btw, the building could be a LOT more efficient IF it drew its air from buried pipe that cooled the air in summer and warmed in. Winter, either by adiabatic drawing or a small photoelectric powered fan
Yours is a pretty negative comment. Even if you disagree, there is a way to do that. Be kind with your words. Respect 🫡