Effect of punching holes on the thermofluids characteristics of wavy fin-and-tube heat exchangers

Ali Sadeghianjahromi, Chi Chuan Wang

研究成果: Conference contribution同行評審

摘要

In this study, improvements upon the airside performance of wavy fin-and-tube heat exchangers are made by punching holes on top of leeward wavy fin surfaces. Detailed parametric studies concerning location, width and length of holes are performed by 3D numerical simulations. It is found that punching holes on top of wavy fin surfaces can result in 7% decrease in thermal resistance while punching holes on top of leeward parts and bottom of windward parts of wavy fins will only increase pumping power without any heat transfer enhancement. Increasing width of holes imposes negligible effect on heat transfer characteristics. Conversely, increasing length of holes is comparatively effective. Punching holes with width of 1 mm and length of 12 mm can result in a decrease in thermal resistance up to 10%.

原文English
主出版物標題ICR 2019 - 25th IIR International Congress of Refrigeration
編輯Vasile Minea
發行者International Institute of Refrigeration
頁面2114-2121
頁數8
ISBN(電子)9782362150357
DOIs
出版狀態Published - 1 一月 2019
事件25th IIR International Congress of Refrigeration, ICR 2019 - Montreal, Canada
持續時間: 24 八月 201930 八月 2019

出版系列

名字Refrigeration Science and Technology
2019-August
ISSN(列印)0151-1637

Conference

Conference25th IIR International Congress of Refrigeration, ICR 2019
國家Canada
城市Montreal
期間24/08/1930/08/19

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