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Research Papers: Heat Exchangers

Heat Transfer and Flow Resistance Characteristics of Louver Fin Geometry for Automobile Applications

[+] Author and Article Information
Hie Chan Kang

Professor, School of Mechanical Engineering,  Kunsan National University, Gunsan 573-701, South Korea e-mail: hckang@kunsan.ac.kr

Gil Woong Jun

 Senior Researcher, Halla Climate Control Co., Deajeon 306-230, South Korea e-mail: gwjeon@mail.hcc.co.kr

J. Heat Transfer 133(10), 101802 (Aug 11, 2011) (6 pages) doi:10.1115/1.4004169 History: Received July 29, 2010; Revised April 25, 2011; Published August 11, 2011; Online August 11, 2011

The present work was conducted to investigate the air-side pressure drop and heat transfer performance of the louver fin-tube heat exchanger for automobile applications. Fourteen kinds of louver fin geometries with different louver pitches and angles were tested in the present work. The f and j factors for plane and louver fin configurations were compared experimentally and numerically. The heat transfer and pressure drop characteristics of the plane fin showed the combined mode of the developing flow on a flat plate and the fully developed flow in the rectangular channel. The heat transfer coefficient of the louver fin was about twice as high as that of the plane fin. Empirical correlations proposed by previous researchers were compared with the present experimental data. Correlations of j and f factors were proposed for the present experimental data. The j and f factors were simply expressed as functions of the average louver pitch, fin pitch, louver angle, and Reynolds number based on the louver pitch. The present correlations of the heat transfer and pressure drop agreed well with the experimental data.

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Copyright © 2011 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Louver fin-tube heat exchanger for car radiators and air-conditioners

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Figure 2

Schematic diagram of louver fin-tube heat exchanger

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Figure 3

Schematic of the experimental apparatus used in the present work

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Figure 4

Schematic drawing giving the periodic boundary conditions in the scaled-up model test

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Figure 5

Calculation domain and boundary conditions of louver fin in the present numerical simulation

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Figure 6

Surface mesh for the present numerical simulation of louver fin

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Figure 7

Comparison of f and jp factors of the plane fin (type P of Table 1)

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Figure 8

Comparison of the performance of plane and louver fins (type P and M of Table 1)

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Figure 9

Comparison of the present experimental data and empirical correlations for the louver fin type M of Table 1

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Figure 10

Comparison of the present empirical correlation with the experimental data for f factor

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Figure 11

Comparison of the present empirical correlation with the experimental data for j factor

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