Heat and Flow Analysis of a Parallel Flow Heat Exchanger Using Porous Modeling

- Journal title : Transactions of the Korean Society of Mechanical Engineers B
- Volume 25, Issue 12, 2001, pp.1784-1792
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.22634/KSME-B.2001.25.12.1784

Title & Authors

Heat and Flow Analysis of a Parallel Flow Heat Exchanger Using Porous Modeling

Jeong, Gil-Wan; Lee, Gwan-Su;

Jeong, Gil-Wan; Lee, Gwan-Su;

Abstract

Numerical analysis on a parallel flow heat exchanger(PFHE) is performed using 2 dimensional turbulent porous modeling. This modeling can consider three-dimensional configuration of passage (flat tube with micro-channels), and the stability and accuracy of numerical results are improved. The geometrical parameters(e.g., the position of separators, inlet/outlet, and porosity of passages of a PFHE) are varied in order to examine the flow and thermal characteristics and flow distribution of the single phase multiple passages system. The flow non-uniformities along the paths of the PFHE are observed to evaluate the thermal performance of the heat exchanger. The location of inlet affects the heat transfer, and the location of outlet affects the pressure drop. The porosity with the optimum thermal performance is around 0.53.

Keywords

Parallel Flow Heat Exchanger;Micro-Channel;Porosity;Flow Non-uniformity;

Language

Korean

References

1.

Sugihara, A. and Lukas, H. G., 1990, 'Performance of Parallel Flow Condensers in Vehicular Applications,' SAE Technical Paper Series 900597, pp. 1-16

2.

Kim, S., Choi, E., and Cho, Y. I., 1995, 'The Effect of Header Shapes on the Flow Distribution in a Manifold for Electronic Packaging Applications,' Int. Comm. Heat Mass Transfer, Vol. 22, No.3, pp. 329-341

3.

Choi, S. H., Shin, S., and Cho, Y. I., 1993, 'The Effect of Area Ratio on the Flow Distribution in Liquid Cooling Module Manifolds for Electronic Packaging,' Int. Comm. Heat Mass Transfer, Vol. 20, pp. 221-234

4.

이관수, 정지완, 유재홍, 1998, '평행류 열교환기의 열.유동 해석 및 최적화,' 대한기계학회논문집(B), 제22권 제2호, pp.229-239

5.

정길완, 이관수, 2000, '평행류 열교환기의 열.유동 특성에 대한 설계인자의 최적화,' 대한기계학회논문집(B), 제24권 제5호, pp. 640-651

6.

정길완, 이관수, 김우승, 1999, '미세유로를 갖는 남작관이 열.유동 해석,' 대한기계학회논문집(B), 제23권 제8호, pp. 978 - 986

7.

Grtachew, D. and Mynkowycz, W. J., Lage, J. L., 2000, 'A Modified Flow of The ${\kappa}-{\varepsilon}$ Model for Turbulent Flows of an Incompressible Fluid in Porous Media,' Int. J Heat Mass Transfer, Vol. 43, No. 16, pp. 2909-2915

8.

Antohe, B. V. and Lage, J. L., 1997, 'A General Two-Equation Macroscopic Turbulent Model for Incompressible Flow in Porous Media,' Int. J Heat Mass Transfer, Vol. 40, No. 13, pp. 3013-3024

9.

Nakamura, Y., Jia, W., and Yasuhara, M., 1989, 'Incompressible Flow through Multiple Passages,' Numerical Heat Transfer, Vol. 16, pp. 451-465