In this case, the temperature of cooling portion is about 100 centigrade. Left hand photograph shows the general view of this engine. The right hand side port to the fly wheel is the power pistion. The left is the heating portion and cooling portion which has the displacer in it. Right hand photograph shows the system of this equipment.
White block is the electric heater.
Using this electric heater the temperature can be raised upto 800 centigrade. As increases heater temperature, as increases the revolution of fly wheel. If we could use the hydrogen gas instead of the air, the power would be much more higher. This is our model engine. Power source is not the vapor but the compressed air distributed by the air compressor.