Journal
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
Volume 25, Issue 6, Pages 688-694Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0140-7007(01)00065-2
Keywords
heat exchanger; fin-and-tube; exterior; condensation; surface state; experiment
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An experimental study on the behavior of water hold-up by condensation on various shapes of fin-and-tube heat exchangers with different surface hydrophilicity, i.e. dynamic contact angle of surface, was conducted. Condensation experiments were conducted, and the amount of water hold-up was measured, Condensation flow patterns on fins with different surface hydrophilicity were visualized. Results showed that the water hold-up of a heat exchanger could be reduced by the enhancement of the surface hydrophilicity and the design of a heat exchanger with a lower number of fins and fins with slant ends. (C) 2002 Elsevier Science Ltd and IIR. All rights reserved.
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