M37 - Stirling -water pump

Technical details
Year of acquisition 2008
Power piston stroke 20 mm 
  diameter 15 mm
Displacer piston stroke
Flywheel  diameter
Idle speed 1 Hub /s
Energy source Lampenöl
Mass 650 g 


Yet another model I bought, a  glassblower's piece of art: All components, including the valve balls, are made of glass. 

On one side of the U-shaped tube, the water column acts as displacer piston, on the other as power piston. The pressure fluctuations operate the attached pump, which continuosly circulates water from a container and back.