A comparative study of the airside performance of winglet vortex generator and wavy fin-and-tube heat exchangers

Chi-Chuan Wang*, Y. J. Chang, C. S. Wel, B. C. Yang

*Corresponding author for this work

研究成果: Paper同行評審

摘要

This study presents airside performance of the delta winglet vortex generator (VG) vs. a wavy fin surface in both dry and wet conditions. The fin pitch of the test samples is 1.7 mm and the number of tube rows is 2 and 4, respectively. For the airside performance tested in dry condition, the heat transfer coefficient for the wavy fin surface is only 6% higher than that of the winglet VG at N = 2, but the pressure drop is about 15% higher. Conversely, the heat transfer coefficients for the winglet surface are higher than those of the wavy fin surface by approximately 5% with comparable pressure drop at N = 4. For the airside performance tested in wet conditionne heat transfer performance of the winglet VG is superior to that of the wavy fin surface for both N = 2 and N = 4. Furthermore, the pressure drop for winglet VG is considerably lower (15-40%). It is likely that this phenomenon is due to better condensate drainage caused by the swirled motion of the VG surface.

原文English
頁面51-55
頁數5
出版狀態Published - 22 十一月 2004
事件2004 Winter Meeting - Technical and Symposium Papers, American Society of Heating, Refrigerating and Air-Conditioning Engineers - Anaheim, CA, United States
持續時間: 24 一月 200428 一月 2004

Conference

Conference2004 Winter Meeting - Technical and Symposium Papers, American Society of Heating, Refrigerating and Air-Conditioning Engineers
國家United States
城市Anaheim, CA
期間24/01/0428/01/04

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