Maker Faire 2008 Engine 3d

From 2008_05_05 Ma…

Stirling Engine setup for measuring power output. The postal scale measures torque generated by the friction of the arm clamped to a sleeve on the crankshaft. The tachometer (small red device) displays RPM. A thermometer displays the temperature of the water heated by the heat lamp. I use an infrared thermometer to measure the cold sink below the displacer.

From 2008_05_05 Ma…

Partly visible at the lower left and held on with clothespins is a manifold for measuring peak positive and negative pressures with a manometer. The pressure tap is routed through one of two one-way valves and then to the manometer. This arrangement allows the manometer to track peak pressures at higher RPM than is possible by direct connection to he manometer. 

A video of the engine running with 180 degree F hot water and an 80 degree cold sink. It is shown delivering  .09 watts at 37 RPM