With the TEGs, is the heat "consumed"? In the snow/armpit scenario, would your armpit eventually get cold? There has to be some cost to the current generated, right?
I'll look into this "fire" thing as well.
My thought is to generate heat in the middle of nowhere using the most basic components. Rubbing two things together seems like the simplest way to generate heat, so I was thinking about how to give it a boost. The theory of heat pumps is great, but you can't readily carry a fluid cycle heat...
The input energy is manual. Simply rubbing the objects together by hand.
I agree that the waste heat is 100% efficient, but that's why I am considering a simple thermoelectric or heat pump device to give it a boost. The additional heat transferred by the device would make the heat output...
Thanks for the input. It got me thinking about some different methods, but I think the biggest hurdle is that I'm trying to do it without an additional power supply or battery.
Solid state heat pumps are along the lines of what I'm looking for, but they seem to take large amounts of current...
Sure there are better ways to generate heat. But it's the simplicity of rubbing two items together to generate more heat than expected that I'm trying to demonstrate.
I am interested in generating heat manually by rubbing two materials together. I am trying to find the most efficient way to generate the most heat. I've read a little about thermoelectricity where if a current flows in a circuit consisting of two different conductors then one of the junctions...