Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

Thermal and Flow Analysis inside the Header of a Parallel Flow Heat Exchanger

평행류 열교환기의 헤더내 열유동 해석

  • Published : 2000.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study numerically analyzes the thermal and flow characteristics inside the header in PFHE(parallel-flow heat exchanger) by employing a three-dimensional turbulence modeling. The following quantities are examined by varying the injection angle of the working fluid, the location of entrance and the shape of entrance: flow nonuniformity, heat transfer rate, and flow distribution in each passage. The result shows that the degree of significance among the parameters affecting the header part is in the order of the injection angle, the shape of entrance, and the location of entrance. The result also indicates that heat transfer rates compared to the reference model are increased by about 152% for the angle of injection of -$20^{\circ}C$, by about 127% for the shape of entrance with right and left long rectangular form, and by about 108% for the location of entrance located at the lowest Position.

Keywords

References

  1. Development in Finned Tube Heat Exchangers Theoretical and Practical Aspects Recent Developments in Heat Exchangers for Automotive Application Marvillet, C.
  2. Numerical Heat Transfer v.16 Incompressible flow through multiple passages Nakamura, Y.;Jia, W.;Yasuhara, M.
  3. Int. Comm Heat Mass Transfer v.20 The effect of area ratio on the flow distribution in liquid cooling module manifolds for electronic packaging Choi, S. H.;Shin, S.;Cho, Y. I.
  4. Technical Paper Series 900597 Performance of parallel flow condensers in vehicular applications Sugihara, A.;Lukas, H. G.
  5. SAE Technical Paper Series 930155 Construction and performance characteristics of the PFETM evaporator Trauger, P. E.;Hughes, G. G.
  6. Korean Journal of KSME(B) v.22 no.2 Thermal and flow analysis for the optimization of a parallel flow heat exchanger Lee, K. S.;Chung, J. Y.;Yoo, J. H.
  7. Introduction to Heat Transfer(3rd ed.) Incropera, F. P.;DeWitt, D. P
  8. Computational Methods in Applied Mechanics and Engineering 3 A critical comparison of several low reynolds number κ-ε turbulent flows Steffen, C. J.
  9. AIAA Journal v.23 no.1 Features of a reattaching turbulent shear layer in divergent channel flow Driver, D. M.;Seegmiler, H. L.
  10. Turbulent Modelling for CFD Wilcox, D. C.