The Babcock & Wilcox Company

The Babcock & Wilson Company

Jamal Righi

George B Watson

A nozzle apparatus for producing flexible fibers of superconducting material receives melted material from a crucible for containing a charge of the superconducting material. The material is melted in the crucible and falls in a stream through a bottom hole in the crucible. The stream falls through a protecting collar which maintains the stream at high temperatures. The stream is then supplied through the downwardly directed nozzle where it is subjected to a high velocity air flow which breaks the melted superconducting material into ligaments which solidify into the flexible fibers. The fibers are collected by blowing them against a porous cloth.

Nozzle for superconducting fiber production

A method for manufacturing a ribbed flow channel (38) results in enhancing the heat transfer performance of a hydraulically expanded heat exchanger such as a coiled tube boiler (10). The ribs are machined or rolled into a flat metal sheet (20) prior to forming a cylinder. One cylinder (28) is rolled so that the ribs are located inside the cylinder while the other cylinder (32) is rolled with the ribs located on the outside. Cylinder (32) is positioned inside cylinder (28) and electron beam welded to form a helical weld path (16). A pressure fitting (34) is attached to the welded cylinder (36) and hydraulic pressure (P) is applied to deform the cylinders (28, 32) between the helical weld path thus creating a ribbed flow channel (38).

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North Canton, OH, United States of America

Jamal Righi