Parametric optimization of overlapped helical baffled heat exchangers by Taguchi method

Abstract Taguchi method was firstly applied to investigate the influence of five geometric parameters on the comprehensive performance of overlapped helical baffled heat exchangers. These five geometric parameters are helix angle, overlap size, diameter of tube, central distance of tube and tube layout. Fifteen cases with different combination of geometric parameters mentioned above are modeled and analyzed with respect to the heat transfer and flow friction characteristics. Results show that the effect of overlap size on comprehensive performance is most significant among the five geometric parameters. In addition, the two analysis method (i.e. intuitive analysis and statistical analysis) are also conducted that the influence of five parameters is not clearly different and thus all the five geometric parameters should be taken into consideration in optimization design. Based on the analysis, an optimal parametric combination is obtained, which is validated to have better comprehensive performance ( JF factor) than the fifteen models used in testing. The JF factor of the optimal combination is 11.81%–15.57% higher than the model with the relatively better comprehensive performance among fifteen cases.

[1]  J. Lutcha,et al.  Performance improvement of tubular heat exchangers by helical baffles , 1990 .

[2]  Cheng Lin.  Influence of Overlap Size on Shell-side Performance of Heat Exchangers With Helical Baffles , 2012 .

[3]  R. A. Fisher,et al.  Design of Experiments , 1936 .

[4]  Isak Kotcioglu,et al.  Experimental investigation for optimization of design parameters in a rectangular duct with plate-fins heat exchanger by Taguchi method , 2013 .

[5]  Tao Wenquan.  Shell-side heat transfer and pressure drop of shell-and-tube heat exchangers with overlap helical baffles , 2005 .

[6]  Petr Stehlík,et al.  Helical Baffles in Shell-and-Tube Heat Exchangers, Part I: Experimental Verification , 1996 .

[7]  Wang Qiu.  TAGUCHI INVESTIGATION OF PARAMETRIC STUDY ON THE PERFORMANCE OF INTERNALLY LONGITUDINALLY FINNED TUBE WITH SINUSOIDAL WAVY FIN , 2008 .

[8]  Cheng Lin.  Evaluation of shell side performance and analysis on continuous helical baffled heat exchangers with elliptical tubes , 2013 .

[9]  Hywel Rhys Thomas,et al.  Optimization of operating parameters of ground source heat pump system for space heating and cooling by Taguchi method and utility concept , 2014 .

[10]  M. R. Jafari Nasr,et al.  Fluid flow analysis and extension of rapid design algorithm for helical baffle heat exchangers , 2008 .

[11]  Zhijiu Chen,et al.  Parametric study on the performance of a heat exchanger with corrugated louvered fins , 2007 .

[12]  Wang Shuli,et al.  Hydrodynamic Studies on Heat Exchangers with Helical Baffles , 2002 .

[13]  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 .

[14]  Min Zeng,et al.  Review of Improvements on Shell-and-Tube Heat Exchangers With Helical Baffles , 2010 .

[15]  Chen Yaping.  A Novel Helix Baffled Heat Exchanger Suitable for Tube Bundle Arrangement with Equilateral Triangles , 2008 .

[16]  R Fisher,et al.  Design of Experiments , 1936 .