[-] CadeJohnson@slrpnk.net 3 points 4 months ago

I'd say no in general, but I hold the reins very loosely . . .

[-] CadeJohnson@slrpnk.net 6 points 9 months ago

I note that only one of the photos accompanying the article features PLASTIC rubbish. curious

[-] CadeJohnson@slrpnk.net 4 points 10 months ago

The article mentions hydrogen from electrolysis of water, but I think a bigger source in the future could be steam reforming of biomass. That is, when you heat biomass (plant matter, sewage sludge, maybe even municipal garbage) to about 300C in steam, the organic matter breaks down into simple molecules like hydrogen, carbon monoxide (highly flammable!), methanol, elemental carbon (biochar) and miscellaneous others. Some of those molecules can be recovered for important chemical feedstock (since we won't have petroleum or natural gas as feedstocks anymore, right?), and the gas can be fuel.

In the early days of natural gas use, towns would "reform" the methane (CH4) by reacting it with steam to make carbon monoxide (CO) and 3 molecules of H2 - a mixture known as "city gas". It is not new technology.

[-] CadeJohnson@slrpnk.net 3 points 11 months ago

Have you tried your hand at biochar? I know composting the chips for mulch is high value in a farm operation, but a few tons of biochar can work like a permanent upgrade - improving the soil permanently with one addition - though ongoing permaculture operation continues. I am about to make a biochar cooker out of two steel barrels - inner fuel chamber and outer draft shell. It would probably be more effective with wood scraps than chips though - some air passages through the fuel.

To test it out for myself, I made a miniature version documented at https://github.com/jcadej/TLUD-biochar-reactor (uses a gallon paint can for the fuel chamber. You could test it small and see how it does with wood chips. When I make my bigger version, I will add it to the github project. My rough idea is to cut one barrel down the side and squeeze it smaller and bolt it so it fits inside the other.

[-] CadeJohnson@slrpnk.net 5 points 1 year ago

I have heard this, and I can imagine it is true, but have you seen any analysis? There must be a large crew traveling and lots of equipment - transportation is a big user of petroleum in general -- for entertainment. Though they say the entertainment is good.

[-] CadeJohnson@slrpnk.net 6 points 1 year ago

In that case, Krasnodar and Rostov to Ukraine as buffer zones - maybe Belgorod and Kursk too?

[-] CadeJohnson@slrpnk.net 6 points 1 year ago

I declare the weeds to be wildflowers and then I just have to deal with them if they actually over-run something else. Then my tool is a machete.

[-] CadeJohnson@slrpnk.net 3 points 1 year ago

It is VERY sour. The pulp is full of black seeds. Some people put the pulp with sugar and some water in a blender and liquefy. Then strain it to remove the seed bits. My wife just puts some in a glass of water and lets it stand for a while; then she drinks it. But I do not like the whole pulp texture - the fruit-coated seeds have the consistency I imagine for tadpoles. This week we made banana-passionfruit breakfast scones and just left the seeds whole; they crunch easy; no particular taste to them.

[-] CadeJohnson@slrpnk.net 4 points 1 year ago

We've had a bumper crop here in Puerto Rico, where it is known as "parcha". Elsewhere in the Caribbean you will hear it called maracuya or chinola, too. They are not ready to harvest until they fall off the vine. Even then, they are not at maximum sweetness. They decay from the outside, so let the fruit dessicate some; even collapse and turn black and maybe a little mold won't hurt (though not strictly necessary!).

[-] CadeJohnson@slrpnk.net 4 points 1 year ago

When I used to live in Florida, we'd go once a year to visit the Keys and eat some "bugs" - they were Caribbean Spiny Lobsters. If you think about it, they are pretty closely related - insects and crustaceans. If you are ever confronted with the option to tuck into a big bowl of insects, consider it like a big bowl of shrimp! (full disclosure: I have not had this option, this is only my intellectualization of how to think about it. It is related to my intellectualzation of pretending spiders are crabs, to overcome arachnophobia - though this only extends to not screaming when touched by a spider rather than trying to catch spiders to eat them)

[-] CadeJohnson@slrpnk.net 3 points 1 year ago

Yes, banana plants grow where ever they wish. Through concrete, steel, lead shielding on nuclear reactors, you name it. You can cut the roots into little bits and each bit will grow into a new banana. The only way to kill them is to wish fervently and daily for bananas to eat.

1
DIY Solar Power (slrpnk.net)

I was looking back at reddit posts (while deleting them), and I realized I'd written a book worth of stuff about this topic. I would write it all again, if it is helpful. But for a brief synopsis of "how it works", here is what one does:

Assess power needs - look at your living standard and catalog all the devices you power, and estimate the time they operate - power is measured in watts, and time in hours. Multiply to get watt-hours; then divide by 1000 to get kilowatt hours. Compare with your utility bill.

1

I've been using rainwater for a long time. Back in 2001 we rigged a rain catchment when we were living on a sailboat, and we were hooked. Great tasting water and plenty of it, at least here in the tropics.

We built a house in 2013 with roof runoff collection and a pair of cisterns under the house. A pump at the lower level sent water up to a tank located about 12 meters above the house - so there was always water pressure from that 350 liter reserve. We added a 200L first-flush drum to catch the first debris-laden water draining off the roof.

When we moved in 2021, of course we bought a house with a cistern - but it had no roof drain collection, so we had to retrofit that. The first flush tank is a bit larger now at over 400 liters.

Rainwater from a roof can have bacteria and parasites in it, but during storage, almost everything settles to the bottom of the cistern. One thing that does not is Giardia cysts, so it is wise to filter the water with a one-micron cartridge before drinking. Other household uses are adequately pure after a coarse 50 micron filter at the pump, but the one micron filter is on the cold side at the kitchen sink. The first flush capture and the 50 micron prefiltering are so effective the one micron filter is good for a year or more. Even the 50 micron filter shows no sign of clogging in a year, but when we change it, it LOOKS like it needs changing (very dark brown).

1
My PV system (slrpnk.net)

I bought the electrical equipment from AltEStore and the panels (not shown!) from a local solar store. 4kW Schneider split-phase inverter (replaced once under warranty), and 60A MPPT. The array is a bit over 2kW. The battery bank is KiloVault lithium wired for 48V; 9.6kWh capacity (about $4800 for all eight units).

1
Welcome aboard (slrpnk.net)

Welcome to Offgrid, experienced moderators are welcome to step forward. I'm Cade, formerly u/kg4jxt - off grid since 2001, and learning something new every day. Let's share our victories and disasters here. Aspirations and fears are welcome.

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CadeJohnson

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