Thermal and hydraulic performances of a tube filled with various thermal conductivities of porous media

Peng, Cheng-Chien; Ming, Tingzhen; Tao, Y.-X.

doi:10.1016/j.ijheatmasstransfer.2014.10.073

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Cited by 17 publications

(2 citation statements)

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“…They first used the classical method of local thermal imbalance, then introduced a new model in which the porosity depth is used. Peng et al [50] studied numerical parameters affecting the porous medium and its effect on the coefficient of performance improvement and heat transfer. In numerical simulation, they examined the thermal conductivity of the porous material for the porous material at the center of the tube.…”

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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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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“…Yilmaz and colleagues investigated the performance evaluation criteria for heat exchangers based on second law analysis. Peng and colleagues numerically studied the effects of thermal conductivity of a porous material on performance evaluation criteria of an enhanced tube used in a heat exchanger. They found that the performance evaluation criteria increase as thermal conductivity of the porous material increases.…”

Section: Introductionmentioning

confidence: 99%

Appropriate position of porous insert in a heat exchanger by thermohydraulic analysis

Akar

Rashidi

Esfahani

2017

Heat Trans. Asian Res.

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This paper presents numerically an appropriate position of a porous insert to get a better thermohydraulic performance from a porous heat exchanger. The simulation is based on the Darcy‐Brinkman‐Forchheimer model in the porous field. Two‐dimensional continuity, momentum, and energy equations with incompressible, laminar, steady assumptions have been solved using a finite volume approach. The analysis is performed for different values of porous layer thickness, length, and porosity at a fixed value of Reynolds number (Re = 100) and thermal conductivity ratio (Rc = 5). The results showed that there is about a 48% and 13% reduction in pressure drop and Nusselt number, respectively, by decreasing horizontal porous substrate thickness from 1 to 1/2 for δv = 1/3 at ε = 0.7. As a result, the pressure drop reduces considerably with a reasonable reduction in heat transfer rate by decreasing horizontal porous substrate thickness from 1 to 1/2.

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