Analysis of fluid flow and heat transfer in a double pipe heat exchanger with porous structures

Numerical investigation on baffle configuration improvement of the heat exchanger with helical baffles

“…But this type of heat exchanger has some inherent drawbacks, such as a large pressure drop in the shell side and a dead zone in the back of the segmental baffles, and leading to a serious fouling and high risk of vibration failure on tube bundles [2][3][4][5][6]. A number of new methods were proposed to overcome the above-mentioned drawbacks in shell-and-tube heat exchangers with segmental baffle [7][8][9][10][11][12][13]. STHX with helical baffles (STHXsHB) was firstly proposed by Lutcha and Nemcansky [14].…”

Thermal and fluid flow first-principles numerical design of an enhanced double pipe heat exchanger

“…The Navier-Stokes equations in the compact Cartesian-tensor form are (1) and the mass conservation equation is (2) The u i are the velocity components, x i the coordinates, p the pressure, and the density and viscosity, respectively. In accordance with accepted heat exchanger practice, the outer surface of the outside pipe was specified to be adiabatic.…”

“…A description of representative physical situations that appear in the literature now follows. A number of studies of double-pipe heat exchangers involving porous media are reported in [1] (porous substrates), [2] (porous structures), [3] (porous fins), [4] (porous baffles in the presence of pulsation), and [5] (metal foam). The investigation of wire and other inserts incorporated into double-pipe heat exchangers was performed in [6][7][8][9] (circular wires), and [10] (twisted tapes).…”

Predicting multiple combination of parameters for designing a porous fin subjected to a given temperature requirement

“…This is due to the fact that, as compared to a solid fin, a porous fin of equal weight gives better thermal performance by increasing the effective surface area of convective heat transfer [1,2]. Not only this, the porous materials have also been successfully applied in solar collectors [3], heat exchangers [4], heat pipes [5], etc. It appears that a good number of studies are available which deal with the analysis of porous fin, among which, most are computational.…”