Arcas EarthSoul wrote:One thing I'd like to do with a rocket stove is to use cold, outside air for the combustion, rather than drawing indoor air. This creates a very accessible cold-side for a Stirling motor, as cold air passes in through a duct, with the hot-side being at the chimney.
Arcas EarthSoul wrote:One other design modification to the rocket stove I see is in using used fry-grease from restaurants as fuel... In our day, used fry-grease can be painstakingly filtered, dehydrated, and processed into bio-diesel; but in a much simpler process, straight used fry-grease (with some filtration) could be channeled into the combustion chamber of a rocket stove to power an external combustion "engine", such as a rocket stove paired with a Stirling motor. This could provide a fair amount of electricity along with heat during Winter months and at night when solar is much less available.
Arcas EarthSoul wrote:The biggest problem I see is the lack of a decent commercially-available Stirling motor generator.
Max Kennedy wrote:Cyclone power, maker of the WHE has been promising much for a very long time but has nothing but prototypes. Don't hold your breath!
Max Kennedy wrote:Cyclone should have been marketing a product a long time ago. Will believe it when I see it but won't be holding my breath. Until then it's so much vapourware!
Warren Weisman wrote:
One moving part, turbines operate for decades without maintenance and have a far greater weight-to-power ratio than any piston engine and unlike a steam engine do not require lubrication, which renders your condensed steam unusable (you cannot have oil in a power boiler).
Your efficiency depends entirely on your boiler design and burner, which if you know what you're doing can easily exceed 40%. The Stanley Steam Car's 20 hp boiler took only 25 minutes to reach operating temperature and got comparable fuel economy to the Model T for a long time with probably the most inefficient boiler configuration ever after a single flue marine boiler.