An experimental and numerical study on heat transfer enhancement for gas heat exchangers fitted with porous media

Pavel, Bogdan I.; Mohamad, A. A.

doi:10.1016/j.ijheatmasstransfer.2004.06.014

Cited by 235 publications

(91 citation statements)

References 6 publications

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“…The Darcy flow model is limited to the cases in which viscous forces dominate over the inertia forces, such that pore Reynolds numbers remain smaller than unity [7]. Further, it has already been demonstrated that within the porous medium and for Da 10 -3 , the inertia term of the momentum equation is negligibly small [35,39,40].…”

Section: Governing Equationsmentioning

confidence: 99%

On the effects of exothermicity and endothermicity upon the temperature fields in a partially-filled porous channel

Karimi

Agbo

Khan

et al. 2015

International Journal of Thermal Sciences

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. (2015) On the effects of exothermicity and endothermicity upon the temperature fields in a partially-filled porous channel. International Journal of Thermal Sciences. Copyright © 2015 ElsevierA copy can be downloaded for personal non-commercial research or study, without prior permission or charge Content must not be changed in any way or reproduced in any format or medium without the formal permission of the copyright holder assumption and, therefore, the validity of the LTE is examined. This is done for a wide range of pertinent parameters including Biot number, conductivity ratio, Darcy number and thickness of the porous insert. It is found that the thermal behaviour of the investigated partially filled system is influenced by the heat sources in both solid and fluid phase. It is further shown that the LTE approach remains an acceptable assumption only for some specific regions of the parametric space. Furthermore, the occurrence of temperature gradient bifurcation on the surface of the porous-fluid interface is examined.It is demonstrated that this effect is highly sensitive to the intensity of the energy sources.

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Section: Governing Equationsmentioning

confidence: 99%

On the effects of exothermicity and endothermicity upon the temperature fields in a partially-filled porous channel

Karimi

Agbo

Khan

et al. 2015

International Journal of Thermal Sciences

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“…Sheng-Chung Tzeng et al [2], concluded that for a constant flow-rate, as the porosity decrease, contact surface of the fluid increases, causes a higher heattransfer rate between the fluid and the solid phases. Different porous material with different porosity have been studied for many applications like roof surface temperature moderation [3], cooling of high-power mini-devices [4], enhancing heat transfer rate in Heat exchangers [5,6], cooling of high-powered microprocessors [7]. Bo Yan et.…”

Section: IImentioning

confidence: 99%

Investigation of Heat Transfer Rate through Porous Material

Vanjari¹

2017

IJRASET

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The present experimental work is done to investigate forced convective heat transfer rate through porous material. For this study stainless steel ball of diameter 8, 12 and 16 mm are used to form test section with different porosity. The different parameters are calculated like Reynolds number, Prandtl number, porosity, convective heat transfer coefficient and plotted the effects of porosity and mass flow rate on heat transfer rate. It shows that for minimum porosity heat transfer rate increases and it depends upon mass flow rate also.

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“…According to the results of this simulation, Nusselt number and coefficient of improvement have a uniform increase in yield with porosity conductivity coefficient and Reynolds number. [51] have investigated the effects of insertion of metal porous material in the form of a grid in the center of the pipe, on numerically and experimentally examining the heat transfer of a pipe that is subject to constant and uniform flux. They investigated the porosity, porous diameter and conduction heat transfer coefficient plus the Reynolds number.…”

Section: International Journal Of Advanced Engineering Management Anmentioning

confidence: 99%

Using Porous Media to Enhancement of Heat Transfer in Heat Exchangers

Rashidian¹,

Tavakoli²

2017

IJAEMS

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An experimental and numerical study on heat transfer enhancement for gas heat exchangers fitted with porous media

Cited by 235 publications

References 6 publications

On the effects of exothermicity and endothermicity upon the temperature fields in a partially-filled porous channel

On the effects of exothermicity and endothermicity upon the temperature fields in a partially-filled porous channel

Investigation of Heat Transfer Rate through Porous Material

Using Porous Media to Enhancement of Heat Transfer in Heat Exchangers

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