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#Post#: 1140--------------------------------------------------
Doom Tech
By: Digwe Must Date: October 7, 2021, 11:44 am
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Well, I hope this is the right place for something about solar
energy.
HTML https://solar.lowtechmagazine.com/2021/10/how-to-build-a-low-tech-solar-panel.html
After the wheels fall off, this could be of interest to a few
regions where the manufacturing potential still exists. As for
now, the cartel will not allow competition. For those not
familiar with Low-Tech Magazine I think you would find several
of Kurt's efforts interesting. I intend to use his previous
article on thermo-electric generation in our design here.
#Post#: 1143--------------------------------------------------
Re: Doom Tech
By: K-Dog Date: October 7, 2021, 4:12 pm
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[center][img
width=500]
HTML https://solar.lowtechmagazine.com/dithers/COVE-1910.png[/img][/center]
[center]George Cove, a forgotten solar power pioneer[/center]
The above post was fine where it was, in Energy Errata. But I
decided it deserved its own thread. I thought of calling the
thread 'Doom Solar' but other straight up science/tech posts can
fit here too. This thread is different than Energy Errata
because it is only technical and is not political at all.
#Post#: 1147--------------------------------------------------
Re: Doom Tech
By: Nearings fault Date: October 7, 2021, 4:55 pm
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[quote author=Digwe Must link=topic=69.msg1140#msg1140
date=1633625086]
Well, I hope this is the right place for something about solar
energy.
HTML https://solar.lowtechmagazine.com/2021/10/how-to-build-a-low-tech-solar-panel.html
After the wheels fall off, this could be of interest to a few
regions where the manufacturing potential still exists. As for
now, the cartel will not allow competition. For those not
familiar with Low-Tech Magazine I think you would find several
of Kurt's efforts interesting. I intend to use his previous
article on thermo-electric generation in our design here.
[/quote] an interesting read. I do disagree with the offhand way
they dismiss recycling existing panels. There are several
different strategies coming online to deal with them as the
volume now makes recycling worthwhile. Efficiency wise solar
panels don't stop working they loose efficiency and are deemed
uneconomic... Not the same thing. A panel looses 0.5 percent of
production capacity per year. Assuming a 20 percent efficiency
versus the 5 percent of the alternative in the article 60 or 70
years to parity?... It is an interesting idea though.
I played around with themoelectrics but they top out at about 5
percent efficiency so you need a shit tonne of waste heat to get
anything from them.vI could not justify the time and complexity
of them... They led me to wood gasification though as an
alternative battery charging tech so not a dead end.
#Post#: 1157--------------------------------------------------
Re: Doom Tech
By: Digwe Must Date: October 8, 2021, 12:22 am
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[quote author=K-Dog link=topic=69.msg1143#msg1143
date=1633641155]
[center][img
width=500]
HTML https://solar.lowtechmagazine.com/dithers/COVE-1910.png[/img][/center]
[center]George Cove, a forgotten solar power pioneer[/center]
The above post was fine where it was, in Energy Errata. But I
decided it deserved its own thread. I thought of calling the
thread 'Doom Solar' but other straight up science/tech posts can
fit here too. This thread is different than Energy Errata
because it is only technical and is not political at all.
[/quote]
Cool. Thanks. Sorry I am still ignorant of how this all works.
[quote author=Nearings fault link=topic=69.msg1147#msg1147
date=1633643734]
[quote author=Digwe Must link=topic=69.msg1140#msg1140
date=1633625086]
Well, I hope this is the right place for something about solar
energy.
HTML https://solar.lowtechmagazine.com/2021/10/how-to-build-a-low-tech-solar-panel.html
After the wheels fall off, this could be of interest to a few
regions where the manufacturing potential still exists. As for
now, the cartel will not allow competition. For those not
familiar with Low-Tech Magazine I think you would find several
of Kurt's efforts interesting. I intend to use his previous
article on thermo-electric generation in our design here.
[/quote] an interesting read. I do disagree with the offhand way
they dismiss recycling existing panels. There are several
different strategies coming online to deal with them as the
volume now makes recycling worthwhile. Efficiency wise solar
panels don't stop working they loose efficiency and are deemed
uneconomic... Not the same thing. A panel looses 0.5 percent of
production capacity per year. Assuming a 20 percent efficiency
versus the 5 percent of the alternative in the article 60 or 70
years to parity?... It is an interesting idea though.
I played around with themoelectrics but they top out at about 5
percent efficiency so you need a **** tonne of waste heat to get
anything from them.vI could not justify the time and complexity
of them... They led me to wood gasification though as an
alternative battery charging tech so not a dead end.
[/quote]
Good Points NF. I think the primary appeal of Cove's design is
that the supply and manufacturing chain does not need to be
nearly as fragile and vulnerable to disruption as the silicone
chain. It's not difficult to imagine regional plants without
the need for international shipping. You may be right (and I
suspect you are) that as the industry gears up the recycling of
existing panels will become cleaner and more efficient, but when
posting this I was thinking more about post-collapse strategy.
I would not expect the efficiency of Cove's design to improve
and compare favorably with silicone until there is some research
and development. After all, it's been a century.
Our interest in thermo-electric tiles is simply explained. The
sun does not shine here much in the winter - but I burn a lot of
firewood in the winter. Although the generation of power is
minimal - I need to build the fire anyway. During the half of
the year when we don't burn wood the sun usually shines. We are
in the trees here and a windy day is rare. Certainly we don't
get enough wind to generate power more than a few days a year.
We make biochar. Quite a bit of it. So, we were quite
interested in a wood gasifier. We worked with the GEK All Power
Lab folks down in Oregon. The problem, of course, is that you
are using an engine that will wear out and need maintenance and
repair. In a post collapse scenario this could be problematic.
Folks are having trouble getting Honda parts now. The solar
panel and the thermo tiles don't have moving parts.
If my body holds together we'll be doing some construction
around here next year that includes a shop, cabin and a biochar
Adam Retort kiln. Alternative building methods and power
generation are something that I am years behind on here and I
need to catch up while (if) I still can. A shop is going to be
difficult to run on solar or thermo but any cabin we build will
be off grid. We have several pallets of foundry bricks (don't
ask). We'll use those in the kiln.
I'm also looking at Sterling engines.
#Post#: 1254--------------------------------------------------
Re: Doom Tech
By: Digwe Must Date: October 14, 2021, 11:49 am
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Ram Pumps
I first saw a ram pump in action about 25 years ago while I was
fighting a wildfire outside of Great Falls Montana. The pump was
in a coulee that drained a large area of prairie into the Smith
River. The pump had been installed by the first homesteaders
and had been running - with extremely limited maintenance - for
almost a hundred years.
Rams use the pressure from - depending on the design - about
90% of the water in the feed pipe to pump the other 10% of the
water.
We have a very small creek here running through the place. I
have a small ram I will be installing next spring. Our
challenge is the volume of water. In a dry year like this last
one the flow drops enough to make any pump problematic. We have
plenty of fall. The pump will move the water about a hundred
ft. vertically up the hill to a small holding reservoir from
where it will go via gravity to various locations.
No external power necessary. Can be built at home in the garage
from common materials.
We've considered installing a micro-hydro set up. But it would
only be practical for part of the year and they aren't cheap.
Maybe later.
HTML https://www.youtube.com/watch?v=5pJ-2Dh0EuA
HTML https://www.youtube.com/watch?v=rxqUkybsxYw
#Post#: 1291--------------------------------------------------
Re: Doom Tech
By: Digwe Must Date: October 16, 2021, 1:35 pm
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But can they herd sheep?
HTML https://www.youtube.com/watch?v=byhRXB8JZNs
#Post#: 1298--------------------------------------------------
Re: Doom Tech
By: Digwe Must Date: October 17, 2021, 12:04 pm
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Building Bunkers for Billionaires
These guys both have something to sell. I have not researched
their businesses. I am not buying, selling, advocating or
endorsing. I just think it is pretty damn interesting and
relevant to the discussion on the timing of Doom. The VERY
wealthy know what's coming and have an idea of when.
HTML https://www.youtube.com/watch?v=_2A-zH_IHLw&list=TLPQMTYxMDIwMjFo2SSPJ_TUtw&index=2
#Post#: 1517--------------------------------------------------
Re: Doom Tech
By: Digwe Must Date: November 4, 2021, 10:42 am
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Fascine Mattresses - basketry gone wild
So how did the Dutch keep those canals and dykes from eroding
and sluffing in before concrete and geo-tech fabric?
Labor intensive - but VERY effective and efficient.
HTML https://solar.lowtechmagazine.com/2021/11/fascine-mattresses-basketry-gone-wild.html
#Post#: 4096--------------------------------------------------
Special concrete homes are popping up around central Virginia
By: RE Date: September 5, 2022, 7:38 am
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The walls might stand up to 200 mph winds, the roof won't.
HTML https://www.cbs19news.com/story/47215383/concrete-homes-are-popping-up-around-central-virginia
Special concrete homes are popping up around central Virginia
RE
#Post#: 4102--------------------------------------------------
Re: Special concrete homes are popping up around central Virgini
a
By: Nearings fault Date: September 5, 2022, 10:13 am
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[quote author=RE link=topic=69.msg4096#msg4096 date=1662381538]
The walls might stand up to 200 mph winds, the roof won't.
HTML https://www.cbs19news.com/story/47215383/concrete-homes-are-popping-up-around-central-virginia
Special concrete homes are popping up around central Virginia
RE
[/quote]
Every 4 ft along the top of the concrete there is a 1/2 in lag
bolt at least 8 inches long anchoring the sill plate to the
concrete walls. Every truss is anchored to the 2x10 sill plate.
Done right it is engineered to withstand 200 mile an hour
winds... You would loose shingles of course maybe sheathing but
the structure survives...
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