Journal of Flow Visualization and Image Processing

ISSN for PRINT: 1065-3090

For Online Access

Best Paper Award Selection - Editorial Board Site

2000, Volume7

Issue 4

96 pages

Issue price - $140.00

Jongmin Shin
Home Appliance Research Lab., LG Electronics Inc., Gaeumjeong-Dong 391-2, Changwon, Kyoungnam 641-711, Korea

Cheolhwan Kim
Home Appliance Research Lab., LG Electronics Inc., Gaeumjeong-Dong 391-2, Changwon, Kyoungnam 641-711, Korea

Samchul Ha
Home Appliance Research Lab., LG Electronics Inc., Gaeumjeong-Dong 391-2, Changwon, Kyoungnam 641-711, Korea

Jeongbae Kim
Department of Mechanical Engineering, Two-phase Flow Lab., Pohang University of Science and Technology, San 31, Hyoja Dong, Pohang 790-784, Korea

An experimental study on water holdup on surfaces having different hydrocharacteristics was conducted to investigate the defrost performance of fin plates used in refrigerator evaporators. The aging characteristics of the surfaces were investigated. Flow patterns and surface morphologies were visualized, and their results agreed well with the aging characteristics of the surfaces. The surface with better hydrophilicity turned out to provide a lower water holdup and, in turn, a more highly efficient defrost cycle. The study on the geometry of hydrophilic surfaces on water holdup revealed that fewer and sharper edges of hydrophilic surfaces result in less water holdup and, thus, a higher defrost efficiency.

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