Are there any other items like the EcoFan, that can convert heat into power? I know there used to be a camping shower that could take the heat from an engine block, camp fire, etc and heat a satchel of water with it. I'm just wondering if there's anything else out there that can be powered by the heat of say...a wood stove...?
Thanks!
-Emt1581
Thanks!
-Emt1581