The Stirling engines principle operation force is a temperature difference or pressure wave between the top and bottom parts of the engine. The cleanest of all fossil fuels - Natural gas is used to heat the top of the engine whilst water
returned to the appliance via the heating pump is circulated through the bottom part of the engine to provide the cooling. These differing temperatures drive the pistons up and down. This action within the alternator occurs 50 times a second to generate electricity.
The displacer moves Helium within the generator from the heated end to the cooled end. The spring keeps the displacer moving up and down.
The pressure wave moves the power piston. The power piston includes magnets which move past a stationary coil producing alternating electrical current.
As the Helium is alternately heated and cooled, it expands and contracts, creating a pressure wave inside the generator.
This cycle repeats 50 times a second.
