Heat exchangers

Details Heat exchangers Heat exchangers

1990-05-16

1992-04-07

Flanigan, Allen J.

Heat exchange

Casing or tank enclosed conduit assembly

Conduit coiled within casing

165158, F28D 714

Patent

active

051018934

ABSTRACT:
In a shell and tube boiler for use, in particular, in a liquid-metal-cooled fast-breeder nuclear reactor, the shell is formed as two vertical side-by-side units joined at their upper ends by a chamber. This "folding" of the unit considerably shortens the overall height of the boiler. Each tube is formed in two sections, each comprising a vertical limb with a curved portion at its upper end. The sections are joined by welding together the ends of the curved portions. This reduces the tube lengths which must be manufactured and transported to the site. In use of the boiler, the liquid sodium level in the chamber is maintained below the level of the tube welds. The chamber region above the sodium level may be filled with a blanket gas, such as argon.

REFERENCES:
patent: 2520755 (1950-08-01), Brown, Jr.
patent: 3155404 (1964-11-01), Brown, Jr. et al.
patent: 4136644 (1979-01-01), Tratz et al.
patent: 4230527 (1980-10-01), Cella

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