Gas-fired duplex free-piston Stirling refrigerator

The duplex free-piston Stirling refrigerator is a potentially high efficiency, high reliability device which is ideally suited to the home appliance field. As a gas-fired refrigerator. It has significant advantages over other equivalent devices, freedom from halogenated hydrocarbons, extremely low temperatures available at a high efficiency, and simple burner system control. The design and development of a portable working demonstration unit is described. A necessary factor in the development of a Stirling prime mover system is the use of a sophisticated computer aided development code. This requires continued interaction between the theoretical analysis and practical testing and evaluation. The technical approach was designed around this requirement. A universal test and evaluate the major subunits, subsequently enabling a smooth system integration phase and a verified baseline for future system scaling.