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Concentrated solar energy.

Concentrated solar energy.

Fletcher Created Mar 31, 2026 16:31
14 Comments

in other words, a solar cooker/oven.
i bought one off ebay, should get here today. it is a parabolic dish 1.5 meters in diameter.
gonna use it to blacken/season the items that i smith, because forge scale is a gray color not the black that i want, a lot of smiths just spray paint their items black, i refuse to stoop to that level.

also gonna use the cooker for chemistry work, boiling off a lot of water for free instead of having to burn propane to do so.

thinking about building a big dish out in new mexico, using aluminum sheet & buffing it until it is very reflective. was talking to my friend about methane pyrolysis, he estimated i would need a dish at least 10 meters in diameter to be able to heat up the reaction chamber to the required temperature, 1000°C or more.
such a dish would also work for calcining calcium carbonate to make cement.

 

This topic has 14 comments

Fletcher

Mar 31, 2026 16:35

a solar cooker would be really nice to have in the apocalypse, use it to clean water by boiling it or distilling it, without need for a wood fire. smoke draws ppl to your location.

Baba Yaga

Mar 31, 2026 17:44

I belive you.
Sound like a sophisticated alchemy I wish nothing to do with it. I learned organic chemistry on myself once and now evolution and solar flares and im a Libra.
Anyway.
Yes I could be your friend who sometimes pays attention (are you trying to destroy half of neighbourhood?)

Fletcher

Mar 31, 2026 17:55

there is not a lot of neighborhood out where my land is in NM, there are only 2 houses near my land the rest is just empty.
also since it is getting hotter now because of the greenhouse effect/global warming, even less ppl will want to live out in the desert.
meanwhile ill be out there using the sun & environment to my advantage.

Fletcher

Mar 31, 2026 17:58

another use for a solar cooker, is making charcoal.
puts less co2 into the atmosphere.
always hated how you have to burn wood to get your pyrolysis chamber hot.

Fletcher

Mar 31, 2026 18:08

want to buy a large spot fresnel lens
https://greenpowerscience.com/SHOPFRESNELHOME.html
i have one that was pulled out from a old tv, but it is a linear fresnel lens, need one that concentrates down to a single spot,

Dr. Sus

Mar 31, 2026 20:05

That is a good idea for the apocalypse. Nice. I don't usually like talking money, but how much does one of those run?

I've always wondered what people will do in the desert if the power grid goes down, mostly in the sense of surviving the heat. You have any ideas? There's a chance I might be moving to the high desert, and I'm guessing that's quite different to where you live, but still desolate and gets hot, on top of cold too.

Baba Yaga

Mar 31, 2026 22:00

Doc hun...take it from any other living creature and adapt without ac. I mean dig yourself a cave and smaller for all the beer you gonna produce there.

Baba Yaga

Mar 31, 2026 22:00

Doc hun...take it from any other living creature and adapt without ac. I mean dig yourself a cave and smaller for all the beer you gonna produce there.

Baba Yaga

Mar 31, 2026 22:01

You guys wont belive this but half of my neighbours are scrounging my WiFi.

Baba Yaga

Mar 31, 2026 22:01

My Internet is slow af 😄

Mercurius Mesmerize

Mar 31, 2026 23:11

Baba if your neighbours are using yor WiFi, cant you just change the password?

Baba Yaga

Mar 31, 2026 23:19

I probably can, yes, it would require me doing mental stuff. I dont want to.
Someone might be studying. Neighborhood working class economy UK thing.

Mercurius Mesmerize

Mar 31, 2026 23:53

You should look after your own path and let others sweep their own if they're not even lending you the
brush to take care of yours. why take care of theirs?

Although it could also be bad signal.

Baba Yaga

Mar 31, 2026 23:59

It's probably all at once. I invited trouble to my home and since then my life took unexpected turn. I will look into it. Also it works.
Time to change the provider I think.

 

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