Triple-wall tube heat exchanger

Details Triple-wall tube heat exchanger Triple-wall tube heat exchanger

1989-01-30

1990-11-27

Cohan, Alan

Heat exchange

With leakage collector

165 111, 165154, F28F 100, F28F 2300

Patent

active

049729020

ABSTRACT:
A shell-and-tube exchanger for generating steam, comprising triple-wall tubes, each trible-wall tube including an inner tube, an outer tube and an intermediate porous layer of practically same length. The porous layer is connected to a leak detector for detecting leakage in the triple-wall tube. The triple-wall tubes penetrate and are welded to four tube sheets which define in the shell, steam outlet plenum, upper gas plenum, sodium plenum, lower gas plenum and water inlet plenum. The outer tubes have side holes in the gas plena, which communicate the gas plena to the intermediate porous layer.

REFERENCES:
patent: 3850231 (1974-11-01), Creek
patent: 4090554 (1978-05-01), Dickinson
patent: 4182407 (1980-01-01), Lagerwerf et al.
patent: 4245696 (1981-01-01), Van der Lelij

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