Helicoidally finned tubes

F - Mech Eng,Light,Heat,Weapons – 28 – F

Patent

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257/27

F28F 1/36 (2006.01)

Patent

CA 1215352

ABSTRACT OF THE DISCLOSURE A helicoidally finned tube is provided for use mainly in heat exchangers. The tube comprises a cylindrical tubular member which carries or is integral with a helical member the turns of which form the fins of the tube. The fins are provided with ripples which extend from the outer rim of the fins inwardly and the depth of which diminishes toward the tube center. The ripples serve for baffling a cooling medium inwardly to hotter parts of the tube thereby improving its heat transfer performance. (Fig. 4)

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