Thermodynamics 
Stirling's Engine
PIRA Class: 4F30.10

Purpose
To demonstrate heat converted into mechanical energy.

Description
1. Heat the bottom of the engine with your hand for 2-4 minutes.

2. As the plate warms, give the engine wheel a slight push to overcome friction. (Wheel rotates clockwise)

3. If the plate is adequately warm, the engine should run on its own.

The warm bottom plate and cooler top plate create a difference in temperature and pressure.  The change in pressure results in a net force on the displacement in between.  The periodic flow of the warmed and cooled air results in a periodic motion of the piston and rotation of the fly wheel.

Equipment
Stirling's Engine and warm hand
 
Caution
Engine is extremely delicate.  Please be very careful.