Ceramic heat exchangers
AssigneeThe Babcock & Wilcox Company
InventorsPhilip L. Berneburg, Jamal N. Duqum, Kathryn W. Grant, Daniel R. Petrak
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Abstract
A ceramic fiber-reinforced ceramic heat exchanger includes a tube sheet and one or more coiled, oval cross-section U-tubes formed integrally with the tube sheet, wherein both the tube and tube sheet are composed of a ceramic fiber-reinforced ceramic composition, particularly suited for waste heat recovery in harsh flue gas environments.
Claims18
A heat exchanger for waste heat recovery in high temperature furnace flues comprising a single piece heat exchange element defining two portions characterized as a tube sheet and a tube, the tube having a first tube leg with an open first end and a second tube leg with an open second end, both ends being formed integrally with the tube sheet, the first tube leg and the second tube leg being substantially perpendicular to the tube sheet, said tube including a coiled tube portion interconnected to the first tube leg and the second tube leg, said tube portion extending from the first tube leg through a spiraled path turning around an axis substantially parallel to the tube sheet to the second tube leg, and wherein said tube sheet and said tube comprise a ceramic fiber-reinforced ceramic composite of a ceramic fiber integrally bound and arranged within a ceramic matrix, the ceramic fibers of the tube sheet and the tube being continuous fibers.
Dependencies are inferred from the claim text.