Analysis of a double pipe heat exchanger performance by use of porous baffles and pulsating flow

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

“…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).…”

A numerical investigation of heat transfer and entropy generation during jet impingement cooling of protruding heat sources without and with porous medium

“…Huang et al [20] has studied the heat transfer enhancement of a flat plate solar water collectors by inserting porous metal blocks at the inner wall of absorber and subject to flow pulsation. Targui and Kahalerras [21] carried out numerical investigation to analyze the effect of porous baffles and flow pulsation on the performance of double pipe heat exchanger. Jeng et al [22] experimentally studied heat transfer characteristics in a 180-deg turn around channel with discrete aluminum-foam blocks.…”

“…Further, the effect of porous layer for maximum heat transfer rate and minimum entropy generation were analyzed to achieve the efficient strategy for optimal configuration. This analysis has significance in industrial applications such as cooling of electronic components [35], solar water collectors [20,36] and heat exchangers [21]. In the current study, a SUPG based finite element method has been employed to solve Navier-Stokes equations with Darcy-Brinkman-Forchheimer terms for fluid saturated porous medium for different Darcy number ðDaÞ, Reynolds number (Re), channel height ðH=LÞ and porosity ðÞ.…”