#passivesolar — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #passivesolar, aggregated by home.social.
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I think I’m going to break down and turn the heat back on. High today is 11c/51f in #yeg with no solar gain, so we’re down to 17c in the house.
Last few years I’ve turned off the furnace in mid March-ish and been able to coast on solar gain until September. Even days at -15c with sun made a net gain.
But these last few cool, dreary days means I’m breaking my streak after May long.
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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 -
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: https://atmosgreenhouse.com/blog/the-case-for-a-mostly-passive-solar-greenhouse
📺 Examples:
https://youtu.be/F2Pg3gY7wQ4
https://youtu.be/8qtQgH7DQF0 -
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
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I studied Mechanical Engineering, hoping to go into the blossoming solar field, but was in college when Reagan dismantled the programs. To think what could have been . . #solar #passivesolar #energy https://www.durangoherald.com/articles/what-killed-a-1980s-program-to-kick-start-a-green-home-revolution-in-colorado/
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@glightly
> While these are manufactured ovens, the principle is simple enough you can make your own out of cardboard, black paint and a transparent lidMore on this here:
https://www.appropedia.org/Solar_cooker
https://www.appropedia.org/Sunlight_Oven
I've seen very effective solar dehydrators based on similar principles. See;
https://www.appropedia.org/Solar_dehydrator
#RenewableEnergy #PassiveSolar #SolarOven #SolarCooking #SolarDehydration
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Desalinating Water With the Sun - Getting fresh water from salt water can be difficult to do at any kind of scale. R... - https://hackaday.com/2023/12/21/desalinating-water-with-the-sun/ #shanghaijiaotonguniversity #desalination #passivesolar #greenhacks #solarhacks #cleanwater #plumbing #seawater #pumps #solar #water #mit
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A post from member @mattcropp recounting his adventure figuring out how to fend off the summer heat after the A/C broke at the #PassiveSolar building our space is in.
https://www.laboratoryb.org/adventures-in-passive-solar-heat-mitigation/
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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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Delta T of 75 degrees F (70 in; -5 out)
#woodburning
#passivesolar
#insulation -
It’s a typical cool December day in southern Indiana, but our passive solar design has already gotten the living room to 73F and that heat will be stored and transported into the rest of the house well into the evening.
#PassiveSolar #Architecture -
To think that there was a plan to organize America’s political map, down to the county level, by watershed rather than by arbitrary grid. How different would the country be today? https://youtu.be/Qny4CDcftrI
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I designed my future home in #sketchup and had an #architect convert them too code for the town I own my land in #3dmodeling #tinyhome #passivesolar
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Great article. I'm always bringing up the fact that my hippie-generation parents were like this.
"Despite their long hair and countercultural leanings, the New Alchemists were not hippies; they were scientists. ... alongside quotations from Tolkien and poems about mushrooms are reports on their experiments on the insect-resistance of certain cabbage varieties, diagrams of their low-tech wind turbines or progress reports on aquaculture techniques.
Nor was the NAI a “commune”. It was a research project, the Todds explain; people came there to work, not to play. At its peak, the NAI had around 30 members, aided by hundreds more temporary volunteers. Few actually lived on the site."
And about that awesome building: We focus on "solar panels" a lot, but #PassiveSolar is just as great in many respects.
"Aligned east-west, the Prince Edward Island ark was partly sunken into the earth on its north side, with sloping glazing along its south facade to capture maximum #solar radiation. The south facade also featured a row of vertically aligned solar collectors (heating water rather than generating electricity – photovoltaic technology was nowhere near advanced enough yet). A prototype #hydraulic wind turbine nearby covered the building’s electricity needs.
The dominant space inside was a high-ceilinged #greenhouse containing plant beds for growing vegetables, herbs, flowers and tree saplings. Lizards, newts, ladybirds and even a resident snake controlled insect populations. The ark also contained 32 of Todd’s “solar-algae tanks” – primarily for fish cultivation, but the tanks proved so effective at storing heat that the building’s other experimental climate systems became redundant."
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Today I'm reading up about how to waterproof earth-bermed or earth-sheltered houses. The type of #roofing I do (i.e. with 060 EPDM rubber) comes up. So does bentonite clay, which I was woefully underinformed about. Cool stuff. #DesignBuild #GreenBuilding
https://en.m.wikipedia.org/wiki/Bentonite
Dunno if this is #SolarPunk exactly - the use of lots of concrete is dubious - however these buildings almost always make use of #PassiveSolar design which definitely is
