Abstract: A radiating fin assembly for thermal energy engine comprises a plurality of spacer members each having a plurality of insertion holes, a plurality of radiating plates each sandwiched between two adjacent spacer members and each having a plurality of insertion holes, and a plurality of insertion pins passing through corresponding insertion holes of the spacer members and corresponding insertion holes of the radiating plates to assemble the spacer members with the radiating plates. The spacer members and the radiating plates further have central circular apertures and the radiating fin assembly reduces a temperature of a hot body when the hot body is arranged within the central circular apertures.

Abstract: A thermal energy engine assembly comprises a cylinder, a piston set, a reheater, a spindle and a flywheel. An external thermal source is placed outside the cylinder to drive the piston set to have reciprocating motion along the spindle. The piston set has at least one groove on outer surface thereof and the flywheel has a rotatory motion guided by the groove. The reheater is arranged within the cylinder and used to accumulate thermal energy to enhance efficiency of the thermal energy engine assembly.

Abstract: A power machinery for a temperature-differential engine comprises a first valving piston, a power piston, a second valving piston, a spindle, a countershaft and a flywheel. The power piston and the second valving piston have spiral grooves on outer surface thereof and the flywheel is fit on the grooves through a sliding member. The flywheel moves along the grooves on the power piston and the second valving piston and has a rotation motion when the first valving piston, the power piston and the second valving piston have reciprocating motion along the spindle. The countershaft is used to keep a fixed separation between the first valving piston and the second valving piston.