Accession Number : ADD014000

Title :   Thermionic Reactor Module with Thermal Storage Reservoir.

Descriptive Note : Patent, Filed 11 Mar 87, patented 5 Jul 88,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Kennel, Elliot B

Report Date : 05 Jul 1988

Pagination or Media Count : 6

Abstract : A thermionic energy conversion system assembly is described which comprises a fissionable nuclear fuel which surrounds a cylindrical arrangement of thermionic emitter electrodes which surround corresponding collector electrodes, which in turn surround a cylindrical container of a heat sink material, such as lithium hydride, which can absorb large amounts of waste heat energy through a phase change. The heat sink material may also act as a nuclear moderator to reduce the amount of required nuclear fuel. A heat pipe is enclosed within the container of heat sink material to remove waste heat stored in the material. A thermionic energy conversion module is described which comprises 100 stacked-in-series thermionic converter assemblies. A complete spaced-based thermionic nuclear reactor is described which comprises an array of 91 thermionic converter modules wherein the heat pipes connect to a lithium hydride radiation shield which acts as a further heat sink. The radiation shield connects to radiators to remove the waste heat to space. Patents. (mjm)

Descriptors :   *ENERGY STORAGE, *HEAT SINKS, *NUCLEAR ENERGY, *PATENTS, *REACTOR FUELS, *RESERVOIRS, *THERMAL PROPERTIES, *THERMIONIC EMISSION, CONICAL BODIES, CONTAINERS, ELECTRODES, EMITTERS, ENERGY, ENERGY CONVERSION, HEAT, HEAT PIPES, HEAT RESISTANT MATERIALS, LITHIUM HYDRIDE, MODULAR CONSTRUCTION, PHASE TRANSFORMATIONS, RADIATION SHIELDING, RADIATORS(GENERAL), THERMIONIC CONVERTERS, WASTES

Subject Categories : Nuclear Fission Reactors(power)

Distribution Statement : APPROVED FOR PUBLIC RELEASE