Abstract: An electric generator comprises a central cylindrical shielded autoclave fuel capsule made out of metal in which are contained radioisotope fuel rods. A spiral cylindrical heat exchanger encases the fuel capsule. A thermal insulating material insulates the fuel capsule from the cylindrical heat exchanger which encases it to avoid thermal losses. The radioisotope fuel capsule and heat exchanger are contained within a cylindrical housing having a bore formed therein eccentrically located in a cylindrical rotor to form an “eccentric” compression chamber. A number of movable vanes slide radially inwards and outwards in slots formed in the cylindrical rotor. The ends of the vanes are biased against the walls of the eccentric cylinder by means of gas/vapor pressure in the rear part of the radial slots or by spring bias.

Abstract: This invention provides an efficient counter flow heat exchanger of various rectangular, cylindrical or spiral shapes, having two flow channels or more and four inlet/outlet or more. Wherein flow channels have a plurality of passageways created by interposing a roll formed metallic between metallic rectangular sheets to form the flow channel or chamber. Rectangular and roll formed sheets sealingly joined by linking means, preferably but not necessarily by continuous linear spot welding or argon welding process.

Abstract: This invention provides an efficient counter flow heat exchanger of various rectangular, cylindrical or spiral shapes, having two flow channels or more and four inlet/outlet or more. Wherein flow channels have a plurality of passageways created by interposing a roll formed metallic between metallic rectangular sheets to form the flow channel or chamber. Rectangular and roll formed sheets sealingly joined by linking means, preferably but not necessarily by continuous linear spot welding or argon welding process.

Abstract: A radioactive isotope electrostatic generator may include emitter electrodes and collector electrodes. The emitters and collectors may be made of low atomic weight material, and may be formed as a mesh. A radioactive isotope may be homogenously distributed on the emitter electrodes.