Condensation on Six Finned Tubes in a Vertical Row

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Abstract
Condensing heat-transfer coefficients for Freon-12, n-butane, acetone, and water were obtained for six horizontal finned tubes in a vertical row. The over-all heat-transfer coefficients were measured for each tube at a series of water velocities and were plotted by the method of Wilson to obtain the condensing coefficients. The differences between experimental and predicted coefficients for the top tube were less than 14 per cent, and the average condensing coefficient for the six tubes was less than 10 per cent below that for the top tube. The finned surface was entirely effective for condensation even for organic liquids having a tendency to be retained by the fins under static conditions.

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