Decoupled, fluid displacer, sterling engine

A mechanically decoupled, fluid displacing Sterling engine comprising:

• hollow first and second containers, each of said containers having opposite upper and lower ends,
• first and second fluid conduits mounted to, so as to extend between in fluid communication with, said first and second containers,
• a selectively actuable fluid pump mounted in cooperation with said second conduit, said fluid pump adapted to selectively pump fluid between said containers,
• a processor cooperating with said fluid pump, said processor adapted to control said pumping by said fluid pump,
• wherein said first conduit only extends into said upper ends of said containers, and said second conduit extends into said lower ends of said containers,
• a third fluid conduit having opposite first and second ends, said first end of said third conduit extending into said lower end of said second container, a fluid motivated actuator mounted to, in fluid communication with, said second end of said third conduit,
• wherein, when said first and second containers contain an actuating volume of an actuating fluid and the balance of the volume of said containers contains a working gas, wherein said gas is expandable and contractable upon heating and cooling of said gas respectively, and wherein said actuating volume of said actuating fluid is sufficient for said pumping between said containers and for actuation along said third conduit,
• whereby said expanding of said gas urges a power stroke translation of said actuator, and said volume of said containers is pressurized upon a temperature differential being applied to said first and second containers to cause said expansion of said gas,
• and wherein said temperature differential is a geothermal temperature differential,
• and wherein said pumping displaces said actuating fluid between said containers so as to correspondingly displace said gas for heating or cooling to provide said temperature differential to said gas.