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#passivesolar

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impermanen_ 🕊️

We spent the weekend with members of The Earthbuilders Guild (TEG) in Albuquerque, a wonderful collective of largely indigenous earthen home builders. So inspiring! We stayed in a beautiful #adobe home and studied another that is under construction.

Building with local materials and #PassiveSolar design is the way. No concrete—horrible for the planet to produce and transport. Naturally cool in summer, warm in winter. Earth building is an ancient highly refined tech, so beautiful and embracing.

A living room in an adobe home belonging to some musician friends. The walls are thick and there are big wooden beams made from local trees. Afternoon light is streaming in. There’s a baby grand piano and Haitian percussion instruments. There is a fireplace and paintings of colorful scenes from Nigeria on the wall.
An adobe home under construction. The walls made of exposed bricks made with local mud and are framed by local pine boards and heavy beams.
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Stephen Bannasch (316 ppm)

1/x

This morning it was -4 F and by early afternoon it’s warmed up to 12 F. I think the furnace has turned on just once in the last 4 hours. Many south-facing windows and great insulation for the win!

Our house uses about 750 Btu/hour/delta°F and there is a reasonably large thermal mass inside the outer insulation envelope.

Koji, our older gray boss kitty approves!

#Solar #PassiveSolar
#StellaAndKojiShow (without Stella)
#CatsOfMastodon

Photo of Koji, our older gray boss kitty lying down on our older, yellowish recliner completely lit up with the Sun.
Continued thread
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Sprig 🌱

This ancient knowledge is making a comeback in houses, but where it is really making a huge impact is in greenhouses. Even in colder climates where temperatures can reach -40c(-40f), passive solar designs are enabling greenhouses to run all-year.

Image Source: atmosgreenhouse.com/blog/the-c

📺 Examples:
youtu.be/F2Pg3gY7wQ4
youtu.be/8qtQgH7DQF0

A diagram of a passive solar greenhouse.
#greenhouse#greenhouses#passivesolar
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Sprig 🌱

Passive Solar ☀

Within Arizona(USA) is a beautiful cliff-dwelling built by the Sinagua people in 1100-1425 AD. Montezuma Castle (renamed to this by colonizers) has around 20 rooms, and is built using a method that today people call “passive solar building.”

The design ensured the buildings were hit with the heat of the low-winter sun, but protected from the high-summer sun by overhang.

🧵 1/2

Montezuma Castle
#ecofriendly#solarpunk#RandomFacts
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brownfox-ff

Book Review: "The Solar House - Passive Heating and Cooling" by Dan Chiras

Chiras covers lots of detail on passive design, solar heating, and thermal mass. He covers different techniques for capturing and storing sunlight as free heat.

He also calls out the idea of energy use in house construction decades before it was common - "you should also account for how much energy it takes to *construct* and *move* these materials".

But I wish the book had more details on how to do it. How do I calculate? Where and how do I build? I would love more details.

I learned a lot, but I still don't know anything

brownfoxff.substack.com/p/book

brownfox-ff · Book Review: The Solar House - Passive Heating And CoolingBy brownfox
#bookreview#passiveheating#passivesolar
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Strypey

@glightly
> While these are manufactured ovens, the principle is simple enough you can make your own out of cardboard, black paint and a transparent lid

More on this here:

appropedia.org/Solar_cooker

appropedia.org/Sunlight_Oven

I've seen very effective solar dehydrators based on similar principles. See;

appropedia.org/Solar_dehydrato

#RenewableEnergy #PassiveSolar #SolarOven #SolarCooking #SolarDehydration

@msquebanh

Appropedia, the sustainability wikiSolar cookerSeveral engineers and DIY enthusiasts have designed literally hundreds of different types of solar cookers; from simple designs like the solar bowling oven to more complicate ones like the parabolic basket and tin can solar cooker. This expansive variety of options makes it difficult to standardize and evaluate solar cookers, however some critical factors must be met for a design to be successful, some of which are listed below: Cost - must be cheap enough to be viable for implementation into rural areas.
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Donald Ham :sp_pride:

This is the passive solar house I mentioned in my previous post. Built in 1980, it had period-appropriate style and colors: chocolate brown tile floors to soak up sunlight, forest green carpets and wallpaper, brass fixtures. Almost no glass to the north, almost all glass to the south, with overhangs that shaded the windows in the summer. Most of these photos were taken during construction. I did all the tile, most of the trim and interior painting.

#PassiveSolar
#NormanOklahoma

Seen from the north, the front of the house, this passive solar house has few windows facing away from the sun. The house is a saltbox style of a front shed section that abuts a taller shed roof center section. There is a galvanized chimney on the outside of the house to the right, and a 1981 Chevrolet Citation 2-door hatchback in front.
The rear elevation of my solar house, which faces south, and is almost all glass. Sliding glass doors are at either side of the ground floor, 4 double-hung windows fill the space between them. There are two rectangular skylights just to the right of the center, and three wide clerestory windows above. All the windows are in shade, indicating the time must be late spring, when the sun has moved into the northern sky, so that overhangs in the soffit then shade the glass from solar gain. In the winter, with the sun low in the southern sky, all these windows gather sunlight all day.
The interior of the house was almost all open, with slanted ceilings vaulting to the lower part of the clerestory at the back, and to the top of the clerestory from the front. There is an open bedroom loft over a sunken living room, behind which is a bar that opens to the kitchen. Stairs to the loft are just visible at the left edge of the photo. Light from the skylights floods the interior.
This is a view from the loft, looking east from the study area. An open hallway leads to the sleeping area at the back of the photo, where a sliding glass door to a small balcony is behind a rust colored translucent shade. The large skylights above the living area are slanted in such a way that a person in the sleeping area is looking straight outside through them. There is overhead light from the clerestory, and a custom-made triangular window at the return of the clerestory floods the loft with morning sunshine. Just visible on a wall outside the loft railing is a stretched fabric Merrimekko flower print in shades of chocolate, tan, and cream. This was the cusp of the 80s, after all!
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Kyle Davis

As some of you may know, I built a house recently. I wanted to make it as energy efficient as possible.

I live in a very cold, but sunny climate, so we designed the house using #PassiveSolar techniques.

Yesterday was an interesting day.

- The avg outdoor temp was -11.5c/11.2f

- My thermostat is set to 19.5c/67f day, and 16.5c/62f night

- My furnace ran for a total 2h54m all day (~1/8th day)

Everything else was retained or provided by sun coming through the south facing windows.

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