F - Mech Eng,Light,Heat,Weapons – 28 – F
Patent
F - Mech Eng,Light,Heat,Weapons
28
F
257/18
F28F 9/24 (2006.01) F16L 41/00 (2006.01) F28F 9/02 (2006.01) F28F 9/06 (2006.01) F28F 9/22 (2006.01) F28F 21/04 (2006.01)
Patent
CA 1121335
12 48,220 ABSTRACT OF THE DISCLOSURE A high temperature tube and shell vertically positioned heat exchanger including a plurality of tube sheets dividing the interior of the shell into three consecutive chambers. Ceramic tubes are vertically hung from hemispherical seats in an upper tube sheet and extend downwardly through loose fitting porous inserts which line perforations in the lower tube sheets. A hot fluid flows from the bottom chamber upwardly through the ceramic tubes, a cool fluid flows through the upper chamber across the tubes, and a third fluid is injected into the inter- mediate chamber at a pressure higher than that of the fluid mediums in the upper and lower chambers. The third, high pressure fluid flows through the porous inserts and into the other chambers forming a dynamic seal which also allows unrestricted axial motion of the tubes and limited laterial motion of the bottom of the tubes.
350498
Mcconnell And Fox
Westinghouse Electric Corporation
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