Design and Stress Analysis of Extraterrestrial ... - The Black Vault

Peazeemnl (l) Fig. 2.73. A regenerative fuel
element.
Peaeeftm2 (1) KEY: (1) Reagent; (2) Regenerator;
j L(3) Reaction product; (4) Fuel
element.
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Thermal regeneration lies in the heating of the alloy which
has been formed during energy production to a temperature at which
the component possessing the lowest boiling point evaporates from
the alloy. Then the vapor is condensed in the condenser, collected
as is the depleted alloy, and returned along Reparate lines to the
fuel element.
It is assumed that the components have thermal and physical
properties which make their separation technically possible.
A fule element with thermal regeneration
(lithium-hydrogen)
This is one of the simple elements with tnermal regeneration
(Fig. 2.711). The system consists of a fuel element 1, 2, 3, 4
(in which lithium is hydrogenized) operating at 450 0 C and a regenerator
5 operating at a temperature above 850'C, in which the
lithium hydride disassociates into its component parts. The
electrolyte is a melted eutectic mixture LiF-Li; the cathode is a
porous metal electrode 3, and the anode the housing of the fuel
element (1).
The structural diagram of the element is shown in Fig. 2.74.
This is an example of a fuel element where the working media are
in different aggregate states - liquid and gas.
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