/diy/ - Do It Yourself

>>2587465
>Scandinavia.
>Low efficiency photovoltaics are simple, but to get much beyond 15 percent efficiency, you need high tech.
>https://simplifier.neocities.org/
Hallo fra(n) den other thread. I tried making one of those low efficiency photovoltaic cells in burger chemistry class, it didn't work. Can't tell if bad school system or bad design. Either way, it is not idiot proof and hard to troubleshoot.
>>And if you want to makeshift an "inverter" you just need a dc motor and an alternator,
>That is complex and involves losses
Personally, if I were to regulate the voltage of a DC generator, I'd use a variable resistor to control the voltage, and reheat intake air for a wood-burning thermoelectric generator (either from thermionic emissions or some weird steam-powered hybrid of van de Graaff generator and a Kelvin water dropper). But why bother with all that when you can just use a heat engine to run an electric generator and a transformer?
As for storage, just incorporate water retention systems in an agroforestry system, and you can use the excess energy to pump water uphill and store it in a gravitational battery.

>>2587555
You could use the wet wood for steam power, then once it is dry, burn it as the primary fuel. See >>2560942

>>2587558
Most people do not produce enough waste oil to meet their heating demand. Not enough unless you're a fry cook or the guy doing the oil changes.