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

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.jn the design of a heat exchanger there must be provided special
lines for rinsing all cavities. Drainage and filler tubIes must be
arranged s9 as-.to eliminate the formation of gaý pockets during the'
filling of the heat exchanger with the heat carrier.
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Fig. 4.33.
Welding pipes to pipe panels.
As an example of the heat exchange bquipment made for space
power plants, let us examine the steam generator of an energy con-i
version system [50].
a thermal capacity of approximately 50 kW is
The mercury steam generator (Fig. 4.34) with
designed 1o heat,
evaporate, and superheat 0.141 kg of mercuiy per second. The steam
generator is made in a single-flow design and serves to obtain dry
superheated vapor both in earth's gravity and in weightless conditibn.
This steam generator is
a Jacket-and-pipe design;:seven pipes
through which mercury flows are enclosed in A pipe (Jqcket) 51 m*
in diameter, filled with a sodium and potassium alloy. To improve'
heat exchange under weightless conditions the steam generator is
made in the form of a spiral. In addition, devices are installed
for twisting the mercury.
Fig. 4.34.
generator in
spiral coil.
Pipe-in-pipe steam
the form of a
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