Journal of Enhanced Heat Transfer Theory and Application in High Performance Heat and Mass Transfer

ISSN for PRINT: 1065-5131

For Online Access

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2003, Volume10

Issue 1

124 pages

DOI: 10.1615/JEnhHeatTransf.v10.i1

Issue price - $138.00

Jae Dong Chung
Department of Mechanical Engineering, Sejong University, Seoul 143-747, Korea

Byung Kyu Park
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea

Joon Sik Lee
School of Mechanical and Aerospace Engineering, Seoul National University, San 56-1. Sillim-dong Gwanak-gu .Seoul 151-742 Korea

A numerical analysis is conducted on the performance of a plate heat exchanger with a rectangular winglet pair to examine the combined effects of vortex generators and louver fins. Parameters considered are the Reynolds number, angle of attack, and louver angle. The Reynolds numbers are 300, 500, 700, 900, and 1100; angles of attacks are 15°, 30°, 45°, and 90°; and louver angles are 0°, 15°, 30°, and 45°. For evaluation of the heat exchanger performance, the ratio of heat transfer enhancement to flow loss penalty is introduced to take pressure loss into consideration. Results show that the best performance is achieved when the angle of attack is 30° and the louver angle is 15°. Variance is also analyzed, revealing that the most significant contribution is the angle of attack, and the next is the Reynolds number. The sole effect of the louver angle is found to be quite minor at a given angle of attack; however, its effect on heat exchanger performance appears substantial when it is combined with the variation of the angle of attack.

DOI: 10.1615/JEnhHeatTransf.v10.i1.40 Download article, 31-44 pages

Article price - $35.00

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