Experimental optimization of geometrical parameters on heat transfer and pressure drop inside sinusoidal wavy channels

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Abstract

The response surface methodology (RSM) is firstly employed to investigate the geometric and flow parameters on heat transfer, pressure drop and thermal performance of sinusoidal wavy channels with different phase shifts. The investigated flow and geometric parameters are axial Reynolds number 1106<Rea<2530, wave's amplitude ratio 0.2<b/H<0.6, phase shift 0<φ<180 and number of waves 5<Nw<15, respectively. The experiments are carried out by using face central composite design (FCCD). The geometric parameters are optimized and general correlations for pressure drop and Nusselt number inside sinusoidal channels are presented. The influence of each parameter on the heat transfer and pressure drop of sinusoidal wavy channel is also investigated. It is found that the heat transfer to pressure drop ratio is maximum for b/H=0.54, Nw=11, φ/π=0 and the corresponding value of η is 1.21. This optimization gives a lot of freedom to engineers to choose the optimal geometric parameters of plate heat exchangers.

Original languageEnglish
Pages (from-to)121-131
Number of pages11
JournalThermal Science and Engineering Progress
Volume9
Early online date19 Nov 2018
DOIs
Publication statusPublished - 1 Mar 2019
Externally publishedYes

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