Optimization of heat exchangers with vortex-generator fin by Taguchi method

A comparative study of effects of attack angle, length of vortex generator, height of vortex generator, fin material, fin thickness, fin pitch and tube pitch on fin performance of vortex-generator fin-and-tube heat exchanger is conducted by numerical method. The parameters of vortex-generator fin-and-tube heat exchangers are optimized by the Taguchi method. Eighteen kinds of models are made by compounding levels on each factor, and the heat transfer and flow characteristics of each model are analyzed. The results show that these six factors (fin pitch, longitudinal tube pitch, transverse tube pitch, length of vortex generator, height of vortex generator, and attack angle of vortex generator) have great influences on the JF-factor. The fin material and fin thickness have trifling effects on the JF-factor. The two optimal conditions (A1B3C3D2E1F2G1H3 and A2B2C2D3E1F2G1H3) are acquired, and the reproducibility of the results is verified by two analytical results.

[1]  Yong-Heng Zhang,et al.  Comparison of heat transfer performance of tube bank fin with mounted vortex generators to tube bank fin with punched vortex generators , 2008 .

[2]  Martin Fiebig,et al.  Wing-type vortex generators for fin-and-tube heat exchangers , 1993 .

[3]  J. P. V. Doormaal,et al.  ENHANCEMENTS OF THE SIMPLE METHOD FOR PREDICTING INCOMPRESSIBLE FLUID FLOWS , 1984 .

[4]  Min Zeng,et al.  Experimental and numerical investigation on air-side performance of fin-and-tube heat exchangers with various fin patterns , 2009 .

[5]  S. Patankar.  Numerical Heat Transfer and Fluid Flow , 2018, Lecture Notes in Mechanical Engineering.

[6]  Gongnan Xie,et al.  Performance predictions of laminar and turbulent heat transfer and fluid flow of heat exchangers having large tube-diameter and large tube-row by artificial neural networks , 2009 .

[7]  Chi-Chuan Wang,et al.  Flow visualization of annular and delta winlet vortex generators in fin-and-tube heat exchanger application , 2002 .

[8]  Anthony M. Jacobi,et al.  Heat transfer enhancement by winglet-type vortex generator arrays in compact plain-fin-and-tube heat exchangers , 2008 .

[9]  Chi-Chuan Wang,et al.  An experimental study of the airside performance of the superslit fin-and-tube heat exchangers , 2000 .

[10]  Min Zeng,et al.  A CFD-Taguchi Combined Method for Numerical Investigation of Natural Convection Cooling Performance of Air-Core Reactor with Noise Reducing Cover , 2009 .

[11]  Liang-Bi Wang,et al.  Numerical study of the relationship between heat transfer enhancement and absolute vorticity flux along main flow direction in a channel formed by a flat tube bank fin with vortex generators , 2009 .

[12]  M. Fiebig.  Vortex Generators for Compact Heat Exchangers , 1995 .

[13]  Gongnan Xie,et al.  Parametric study and multiple correlations on air-side heat transfer and friction characteristics of fin-and-tube heat exchangers with large number of large-diameter tube rows , 2009 .

[14]  B. P. Leonard,et al.  A stable and accurate convective modelling procedure based on quadratic upstream interpolation , 1990 .

[15]  Giovanni Lozza,et al.  An experimental investigation of heat transfer and friction losses of interrupted and wavy fins for fin-and-tube heat exchangers , 2001 .

[16]  Weeratunge Malalasekera,et al.  An introduction to computational fluid dynamics - the finite volume method , 2007 .

[17]  Gongnan Xie,et al.  Fin Pattern Effects on Air-Side Heat Transfer and Friction Characteristics of Fin-and-Tube Heat Exchangers with Large Number of Large-Diameter Tube Rows , 2009 .

[18]  Genichi Taguchi,et al.  Taguchi on Robust Technology Development , 1992 .

[19]  Chi-Chuan Wang,et al.  Sensible heat and friction characteristics of plate fin-and-tube heat exchangers having plane fins , 1996 .

[20]  Teruo Mori,et al.  The New Experimental Design: Taguchi's Approach to Quality Engineering , 1993 .

[21]  Jiin-Yuh Jang,et al.  Heat transfer and fluid flow analysis in plate-fin and tube heat exchangers with a pair of block shape vortex generators , 2004 .

[22]  P.M.V. Subbarao,et al.  Experimental study of the effect of winglet location on heat transfer enhancement and pressure drop in fin-tube heat exchangers , 2005 .

[23]  Bassam B. Dally,et al.  Effect of a delta-winglet vortex pair on the performance of a tube–fin heat exchanger , 2007 .

[24]  Kwan-Soo Lee,et al.  Influence of design parameters on the heat transfer and flow friction characteristics of the heat exchanger with slit fins , 2000 .

[25]  John H. Sheesley,et al.  Quality Engineering in Production Systems , 1988 .