Browse > Article
http://dx.doi.org/10.3795/KSME-B.2003.27.6.781

Heat and Flow Analysis Inside a Parallel-Flow Heat Exchanger  

Oh, Seok-Jin (한양대학교 대학원 기계공학과)
Chung, Kil-Yoan (한양대학교 기계기술연구소)
Lee, Kwan-Soo (한양대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.27, no.6, 2003 , pp. 781-788 More about this Journal
Abstract
In the present study, the heat and flow characteristics of a parallel-flow heat exchanger are numerically analyzed by using three-dimensional turbulent modeling. Heat transfer rate and pressure drop are evaluated using the concept of the efficiency index by varying the locations, the shapes and angles of inlet/outlet, and the protrusion height of flat tube. It is found that negative angle of the inlet improves the heat transfer rate and pressure drop. Results show that the locations of the inlet and outlet should be toward the right side and the left side to the reference model, respectively, in order to enhance the heat transfer rate and pressure drop. Increasing the height of the lower header causes pressure drop to decrease and yields the good flow characteristics. The lower protrusion height of flat tube shows the improvement of the heat transfer rate and pressure drop. The heat transfer rate is greatly affected by the parameters of outlet side such as the location and angle of the outlet. However, the pressure drop is influenced by the parameters of inlet side such as the location and angle of inlet and the height of the header.
Keywords
Parallel-Flow Heat Exchanger; Efficiency Index;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Aparecido, J. B. and Cotta, R. M., 1990, 'Thermally Developing Laminar Flow Inside Rectangular Ducts,' Int. J. of Heal and Mass Transfer, Vol. 33, No. 2, pp. 341-347   DOI   ScienceOn
2 Tsui, Y.-Y. and Leu, S.-W., 1999, 'Heat Transfer Enhancement by a Multilobe Vortex Generator in Internally Finned Tybes,' Numerical Heal Transfer, Vol. 35, pp. 553-566   DOI
3 Etemad, S. Gh. and Mujumdar, A. S., 1994, 'The Effect of Area Ratio and Rounded Corners on the Laminar Forced Convection Heat Transfer of a Non Newtonian Fluid in the Entrance Region of a Rectangular Duct,' Int. Comm Heat Mass Transfer, Vol. 21, pp. 283-296   DOI   ScienceOn
4 Oh. S. J. and Lee. K. S., 2001, 'Optimal Shape of Header Part in a Parallel-Flow Heat Exchanger,' Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 13. No. 10. pp. 1017-1024   과학기술학회마을
5 Rokni. M. and Sunden B., 1999. 'Turbulence Modeling Experience in Ducts with Forced Convection Flow.' Numerical Heat Transfer, Vol. 35. pp. 629-654   DOI
6 Seyedein. S. H., Hasan, M., and Mujumdar, A. S., 1995. 'Turbulent Flow and Heat Transfer from Confined Multiple Impinging Slot Jets,' Numerical Heat Transfer, Vol. 27. pp. 35-51   DOI   ScienceOn
7 Yang. Y.-T and Tsai. T.-Y., 1998, 'Numerical Calculation of Turbulent Flow in a Planar Bifurcation with a Protruding Branching Duct,' Numerical Heat Transfer, Vol. 34, pp. 61-74   DOI   ScienceOn
8 Trauger, P. E. and Hughes, G. G., 1993. 'Construction and Performance Characteristics of the $PFE^{TM}$ Evaporator,' SAE Technical Paper Series 930155, pp. 171-177
9 Chung, K., Lee, K-S. and Kim, W-S., 2002, 'Optimization of the Design Factors for Thermal Performance of a Parallel-Flow Heat Exchanger,' Int. J. of Heat and Mass Transfer, Vol 45, No. 24, pp. 4773-4780   DOI   ScienceOn
10 Lee, K. S. and Oh, S. J., 2000, 'Thermal and Flow Analysis Inside the Header of a Parallel flow Heat Exchanger,' Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 12. No. 9, pp. 802-809   과학기술학회마을
11 Marvillet, C.. 1993, 'Recent Developments in Heat Exchangers for Automotive Applications,' Recent Developments in Finned Tube Heal Exchangers Theoretical and Practical Aspects. pp. 8-51
12 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   DOI   ScienceOn
13 Nakamura. Y., Jia, W.. and Yasuhara. M .. 1989, 'Incompressible Flow Through Multiple Passages,' Numerical Heat Transfer. Vol. 16. pp. 451-465   DOI