Wood-fired camp stove that generates electricity

[Psi]

Keep in mind that this li'l stove is small and light enough to be carried in a backpack.
Someone wrote something above about a system with 2 pumps; I don't think so.

Yeah, i was more thinking about something the size of a PC case that you could put near a camp fire and get some real power out of it. Making something DIY that is also small and portable will add a lot of extra complexity.

Perhaps you could just have a warning beeper that sounds if it gets too hot and you can be responsible for fixing that before something burns out.  It wouldn't work for a product but probably fine for a DIY thing only you will use. That would at least remove a lot of the complexity/size to regulate the heating and you could DIY something much smaller. You would have to move the thing closer/further away to keep it working and safe.

[cunningfellow]

They do have a firepit sized one

https://www.bioliteenergy.com/products/firepit-plus

Edit:  Apparently the large one is not a TEG - just a USB powered fan

[cunningfellow]

Oh and at one of my jobs they sell these things

https://www.globalte.com/hubfs/Documents/Spec%20and%20Data%20Sheets/Model_5060_Specification_Sheet_67208.pdf?hsLang=en

They range from 50W to 200W and have natural gas burners in them

I actually forgot they sold them till just then as it is nothing to do with the programming microcontroller stuff I do.

[Marco]

A vacuum TEG would probably be better than a peltier at these temperatures, but not a commodity item.

[coppercone2]

they put them on methane / gas things to harvest that useless fire from oil fields, I guess you can power some lights or something with it to make it more environmental. I guess you can put one on reduction furnaces too, they always have a burning chimney on them. Amusing that you can get a few hundred watts of environmental power from a millions of dollars heat treater.

the methane that leaks out of the oil fields is worse then CO2, so they just burn it to reduce greenhouse gasses. 

[cunningfellow]

You will notice that one of the options they have in the brochure is

"Cathodic Protection Interface"

I'm guessing if you have an oil field with methane to burn off, you probably also have a pipeline that needs cathodic protection

[coppercone2]

that is actually useful because it might mean less long runs of power wires, or at least more routing options, and you don't need a battery like you would for solar options

[NiHaoMike]

Yeah, i was more thinking about something the size of a PC case that you could put near a camp fire and get some real power out of it. Making something DIY that is also small and portable will add a lot of extra complexity.

[Psi]

yeah, you can do a lot with cheap PC watercooling parts.