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Effects of Hydrophilic Surface Treatment on Evaporation Heat Transfer at the Outside Wall of Enhanced Tubes
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 Title & Authors
Effects of Hydrophilic Surface Treatment on Evaporation Heat Transfer at the Outside Wall of Enhanced Tubes
Park, No-Seong; Hwang, Gyu-Dae; Kim, Ho-Yeong; Gang, Byeong-Ha; Jeong, Jin-Taek;
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 Abstract
Experiments have been carried out to investigate the evaporation heat transfer characteristics of various tubes on which hydrophilic surface treatment using plasma was employed. Spiral, corrugated and low-finned tubes were selected as test tubes. The evaporator tubes were bundled to form three rows of tubes connected in series, with each row being 400mm long. The results obtained indicate that hydrophilic treated tubes tested exhibit better evaporation heat transfer performance as compared with untreated tubes. It is found that the high wettability of the surface obtained through hydrophilic treatment induces film flow onto the tubes during the evaporation process, while sessile drops are formed on untreated tubes.
 Keywords
Hydrophilic Surface Treatment;Absorption Refrigerator;Evaporation Heat Transfer;Overall Heat Transfer Coefficient;
 Language
Korean
 Cited by
 References
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