The device (2-5) has a transducer (9) which compresses air from output pressure to a storage pressure using energy and releases the air from reservoir pressure to outlet pressure. A liquid piston converter with a liquid piston compresses and expands the ai...

The primary liquid piston converters (5) are provided in the stirling engines (3,4) at a low temperature zone (6) and secondary liquid piston converters (7) are provided in the stirling engines at a high temperature zone (8) respectively. A hydraulic contr...