Does anyone else think modern building construction is stupid when it comes to energy efficiency? Exposing entire structures to the sun, forcing the use of AC.

Can we not develop methods to create homes that shield themselves from the sun and serve other purposes in the process? Solar / wind.

Yes, trees, but they are not scalable and insufficient for any significantly large building, forget tall buildings entirely. There are green walls that probably absorb heat - but I am not sure by how much. I have read something about some skyscraper that stays entirely cool without AC via some methods but I can’t remember what they were (something about circulating water up and down throughout the day and using that for air).

I just think we should have enough tools at our disposal to think of some ingenious ways to keep buildings cool without AC - at scale, within reasonable cost and easy implementation. 

What am I missing?

I recall seeing a house design at a solar competition in Irvine where the sun had drape-like canopies that kept it cool. It worked, but looked silly and not easy to manage in wet climates for example.

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It’s being worked on, so your observations are accurate. The problem now is the cost, but that’s coming down rapidly 🐶🐾🫡

Any resources I should look up?

There is one civil engineer on YouTube that has a lot of talks about this topic, I think the channel is civil engineering or something 🐶🐾🫡

I think this one: https://youtube.com/@RealEngineering

🐶🐾🫡

And one more, who is mainly into energy topics.

🐶🐾🫡

https://youtu.be/wmoy27EZ8y0

Ty!

There’s a building in nyc that uses hydro power I forget which one

look at how houses were built last century before 1971 and post ww cookie cutter. The ones for temp management did layouts that took into account north/south, overhangs for more shade when sun overhead but allow light when sun was low. sunlights, moonlights, etc.

+ bring back awnings and enclosed porches in general

Fiat standard high time-preference architecture is a shitcoin

It is common in Turkey for buildings <=3 floors high, to have a large black barrel on the roof that is pumped with cold water. It's heated by the sun during the day for use in the evening.

I like the idea of aircrete (or foamcrete) construction and geothermal. There's basically no reason to spend hundreds of dollars per month to cool a home, but our darn stupid constriction paradigm requires it.

What we know of today as modern construction is a more permanent version of settler cabins, made to be less temporary and (slightly) lower cost construction.

Stone and earth construction regulate temperatures much better, and working with the natural thermal patterns of the earth rather than against them costs a lot less energy.

YES! Foamcrete dome structures are the shit!

An underground dome structure is my dream dwelling. Almost 0 energy costs. Withstands most temperatures and weather. Soundproof and doubles as a bomb shelter. Could expose part for an indoor greenhouse. Grow stuff in the newly unused footprint. Imagine looking around your neighborhood just seeing gardens, lawns and livestock and all the houses were underground.

Can you sketch it out?

It looks like an igloo, underground. There are videos on youtube

Construction code either makes it impossible, or very expensive to be creative.

100%. Silly concrete jungles.

I literally think this all the time as a civil engineer. Building design and community layouts are traditionally terrible when it comes to energy efficiency.

I just found out about Earthships, houses build from trash like tires, build (half) into the earth. Because the house is build into the earth, it’s cooling naturally, not only it cools, it also keeps the heat through winter! There are already very modern versions of earthships too 🏠

Read about these a while ago. Interesting! I suspect they won’t scale well given the need for apartment buildings and high rises.

the "need".

Do we really need to be jammed together to all get in our cars at the same time to go do work that nobody actually needs done? All the while putting people so close together they can't help irritating each other and leading to social conflict that would have been avoided with distance.

Anyhow, exploiting thermal mass storage of dirt and rocks is something that doesn't mean you can't build tall structures, it just means you probably will spend more on such materials. Cheap building materials like concrete are not good heat stores, whereas certain kinds of rocks are very good, mostly related to the content of metals inside them, and their ability to hold that without expanding so much that they weather fast and break down.

Thats true, something different needs to be created, I really hope something efficient will be build for such constructions 🙏🏼

Or we just all live in earthships, I love the idea! 😊

In some countries like Italy, they used (back in the days) some south "vines walls". The leaves and the grapes create shadows in summer and they die in winter, leaving the house expose to the south. Plus they grow fast and can recover a building in few years (depending on the size).

Awesome

You want to look into "earth ships".

The biggest flaw conventional homes have is they are trying to heat an cool the least-dense substance available in a home: air. Even the Romans knew better.