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Air-side Performance of Aluminum Heat Exchangers at Different Inclination Angles  

Kim, Do-Young (Graduate School of Mechanical Engineering, Incheon University)
Cho, Jin-Pyo (Graduate School of Mechanical Engineering, Incheon University)
Kim, Nae-Hyun (Department of Mechanical Engineering, Incheon University)
Park, Nae-Hyun (LG electronics)
Hwang, Jun-Hyun (LG electronics)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.20, no.3, 2008 , pp. 181-188 More about this Journal
Abstract
The effect of inclination angle on the heat transfer and pressure drop characteristics of the brazed aluminum heat exchangers is experimentally investigated. Three samples having different fin pitches(1.25, 1.5 and 2.0 mm) were tested. Results show that heat transfer coefficient is not affected by the inclination angle. However, the friction factor increases as the inclination angle increases with negligible difference between the forward and backward inclination. Both the heat transfer coefficient and the friction factor are the smallest at $F_p=1.5mm$, followed by $F_p=2.0mm$ and 1.25mm. Possible explanation is provided considering the louver layout. Comparison with existing correlations is also made.
Keywords
Louver fin; Brazed aluminum heat exchanger; Flat tube; Inclination;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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