F - Mech Eng,Light,Heat,Weapons – 28 – F
Patent
F - Mech Eng,Light,Heat,Weapons
28
F
257/27
F28F 1/40 (2006.01)
Patent
CA 1118405
ABSTRACT OF THE DISCLOSURE A heat transfer tube for the water-spray panel evaporator for the gasification of liquefied natural gases which includes a tube having a pair of planar members each projecting outwardly from its peripheral surface, radially with respect to its longitudinal axis and extending longitudinally along such axis, and an internal fin disposed within the tube and having at least three fin members each projecting radially with respect to the longitudinal axis to provide a helicoidal formation extending along and about the longitudinal axis, the helix of the heli- coidal formation contacting the internal wall of the tube in a pressure-fitting relationship. These heat transfer tubes can be assembled to provide a panel evaporator. The method for fabricating such heat transfer tubes and assemblies is character- ized in that the above pressure-fitting relationship is established by drawing the tuba alone to reduce its internal diameter until the helix of the helicoid is abutted against the internal wall of the tube.
320368
George H. Riches And Associates
Kobe Steel Ltd.
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