David L Babcock <olb...@gmail.com> wrote:
> http://bettigue.blogspot.de/ >> >> This guy has very cool stirling engines. I wonder how much heat energy >> you need to run these, though perhaps they could be optimized for a Nanor >> device. >> > > A thermoelectric chip would probably be more practical. A Seebeck > calorimeter is a gigantic thermoelectric chip. I recommend this for small > power levels. > > > Jed, the miserable 10% efficiency of thermoelectric devices would make > this a near worthless system, even as a table curiosity. > I doubt that the miniature stirling engines at bettigue.blogspot are any better. I have a Jensen miniature steam engine similar to these. I expect it is less than 5% efficient. - Jed
