More ideas from jindrich
Reprap-Windturbine: Stirling

Among the projects that Andreas Haeuser has been focusing on are energy-harvesting printed wind turbines and printed solar stirling engines, which are the result of two years of development, multiple prototypes.

Fully 3D Printed Working Engine Runs Completely on Hot and Cold Water — Design is Free http://3dprint.com/21213/3d-printed-working-engine/

Fully Printed Working Engine--Runs Completely on Hot and Cold Water — Print Your Own For Free!