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International Heat Transfer Conference 7

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)


C.G. Barnes, Jr.
U.S. Navy

Warren Max Rohsenow
Massachusetts Institute of Technology, Cambridge, U.S.A.

DOI: 10.1615/IHTC7.350
pages 39-43


The paper presents a simplified method for predicting the performance and sizing of vertical fluted tube condensers with periodic drainoff of liquid in flute troughs. The condensate thickness and the heat transfer coefficient along the fluted surface is evaluated. The condensate flow in the trough, as a function of height is also determined. Finally, an overall heat transfer coefficient for the whole tube is obtained. The emphasis of the paper is on the procedure for evaluation of the fluted tube performance and/or sizing of the condenser. An illustrative example is presented. It was found that the average heat transfer coefficient for a fluted tube (h) is dependent on pertinent tube parameters as follows h ∼ aO.231/(p.L.0.0774) where a, p and L are respectively amplitude of the flute, pitch of the flute and the tube length.

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