The thermal modeling of a matrix heat exchanger using a porous medium and the thermal non-equilibrium model

Hayes, Andrew M.; Khan, Jamil A.; Shaaban, Aly H.; Spearing, Ian G.

doi:10.1016/j.ijthermalsci.2007.11.005

Cited by 74 publications

(25 citation statements)

References 22 publications

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“…In fact, this type of a porous medium is known to be a very efficient heat exchanger. [7,8] However, one may observe that the temperature tends to increase in the second section (x > 7.5 cm) of each compartment. The extent of this temperature rise depends on the quantity of bioheat generated in each compartment.…”

Section: Temperature Profile In the Gas Flow Directionmentioning

confidence: 99%

A 2D Distributed Model of Transport Phenomena in a Porous Media Biodrying Reactor

Navaee-Ardeh¹,

Bertrand²,

Stuart³

2011

Drying Technology

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A novel continuous biodrying reactor has been developed for drying pulp and paper mixed sludge to raise the dry solids levels so that the dried sludge can be combusted economically in a biomass boiler for energy recovery. A two-dimensional (2D) model was proposed that takes into account coupled mass, heat, and biological transport processes for both gas and solids flow directions. This model was solved numerically using the finite element method. The predicted temperatures reflect the two-dimensionality of the transport phenomena in the biodrying reactor. Despite some discrepancies between the temperature predicted by this model and the experimental data, the estimated water removal rates are in good agreement with measured ones. It was found that only one third of the total water removal takes place in the convection-dominated zone of the reactor, whereas the removal of remaining water takes place in its bioheat-and mass diffusion-dominated zone. It was also found that conduction heat transfer has only a minor impact on the matrix temperature, relative to the bioheat source term and evaporative heat sink term, which play important roles.

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Section: Temperature Profile In the Gas Flow Directionmentioning

confidence: 99%

A 2D Distributed Model of Transport Phenomena in a Porous Media Biodrying Reactor

Navaee-Ardeh¹,

Bertrand²,

Stuart³

2011

Drying Technology

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“…A series of studies have been carried out on mixed convection lid driven flows within the closed cavity filled with the fluid media for various applications including the solar ponds [6], float glass production [7], cooling of electronic devices [8], jet impingement [9], thermal energy storage [10], drying process [11], lubrication technology [12], nanofluids [13,14] etc. In addition to the fluid media, mixed convection studies have significant relevance for the fluid saturated porous medium due to several applications such as the heat exchangers [15], geothermal systems [16], combustion process [17] and so on. A large number of experiments and simulations have been used to predict the behavior of the fluid flow and heat transfer inside closed cavities for various velocity and thermal boundary conditions [18].…”

Section: Introductionmentioning

confidence: 99%

Finite element simulations on heatline trajectories for mixed convection in porous square enclosures: Effects of various moving walls

Roy

Basak

2016

European Journal of Mechanics - B/Fluids

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“…Andrew M. Hayes, Jamil A. Khan, Aly H. Shaaban and others have used the twodimensional numerical calculation model and Fluent TM software to study the convection heat transfer problem in a rectanglular heat exchanger. They have also used nonequilibrium heat transfer models of porous media which have been verified by experiments 6 . Ibraheem Nasser and H.M. Duwairi have conducted research on convection heat transfer in porous media 7 .…”

Section: Introductionmentioning

confidence: 99%

Simulation of Solid-Liquid Phase Transition Process in Aluminum Foams Using the Lattice Boltzmann Method

Huang¹,

Chen²,

Shi³

2016

IJHT

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This paper aims to demonstrate the thermodynamics of a thermal storage system based on the latent heat of a composite Phase Change Material (PCM). The paper investigates the flow and heat transfer of solid-liquid phase transitions at the pore level using the Lattice Boltzmann method. The phase transitions process is described using the enthalpy method. A porous medium at the pore scale is constructed here by binarization processing of photograph. The single phase change process is compared with phase transitions in porous media. The simulation results indicate that during the whole heat transfer process, the conduction effect dominates in porous medium composite phase materials while the convection effect has a remarkable influence on a single phase change process. A temperature difference is found between the aluminum foams and phase change materials. Phase transitions in pored aluminum with different porosity are also simulated to validate the feasibility of the enthalpy model at the pore scale.

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The thermal modeling of a matrix heat exchanger using a porous medium and the thermal non-equilibrium model

Cited by 74 publications

References 22 publications

A 2D Distributed Model of Transport Phenomena in a Porous Media Biodrying Reactor

A 2D Distributed Model of Transport Phenomena in a Porous Media Biodrying Reactor

Finite element simulations on heatline trajectories for mixed convection in porous square enclosures: Effects of various moving walls

Simulation of Solid-Liquid Phase Transition Process in Aluminum Foams Using the Lattice Boltzmann Method

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