Wood stoves equipped with thermoelectric generators can produce electricity that is more sustainable, more reliable, and less costly than power from solar PV panels.
Found this on the lowtech magazine. What are your toughts?
The article mentioned designs that negate the need for chimneys but I wonder if that’s a place where mounting it (sort of) through a wall could work - the flue/exhaust in a chimney is generally extremely hot (likely too hot?) and any heat in the chimney is just waste about to escape through the top anyways. If you could mount one of these through an exterior part of a chimney you’d have below freezing winter air on one side and like 400 degree heat on the other. I suspect that’s the sort of thing you’d have to build in from the start as conventional chimneys probably don’t like the kind of uneven heat a hole through the side would produce.
Edit: haven’t gotten to read in depth yet but it looks like there’s a bunch of research papers on thermoelectric generator chimneys
The bit about eliminating chimneys is that you can use a TEG to power a fan which gets the smoke out, instead of relying on convection, which needs a chimney, and many impoverished places lack the means to make holes in roofs. A properly designed chimney absorbs and stores a considerable portion of the heat flowing through it.
Also not sure about the max temperature these things can handle. They mention that the benefit of using these between a heat source and water that is being heated is that the water keeps the element from getting too hot.
The article mentioned designs that negate the need for chimneys but I wonder if that’s a place where mounting it (sort of) through a wall could work - the flue/exhaust in a chimney is generally extremely hot (likely too hot?) and any heat in the chimney is just waste about to escape through the top anyways. If you could mount one of these through an exterior part of a chimney you’d have below freezing winter air on one side and like 400 degree heat on the other. I suspect that’s the sort of thing you’d have to build in from the start as conventional chimneys probably don’t like the kind of uneven heat a hole through the side would produce.
Edit: haven’t gotten to read in depth yet but it looks like there’s a bunch of research papers on thermoelectric generator chimneys
The bit about eliminating chimneys is that you can use a TEG to power a fan which gets the smoke out, instead of relying on convection, which needs a chimney, and many impoverished places lack the means to make holes in roofs. A properly designed chimney absorbs and stores a considerable portion of the heat flowing through it.
Also not sure about the max temperature these things can handle. They mention that the benefit of using these between a heat source and water that is being heated is that the water keeps the element from getting too hot.