Enhancement of heat exchanger thermal hydraulic performance using aluminum foam

Hamadouche, A.; Aberqi, Ahmed; Abboudi, Saïd; Nebbali, Rachid

doi:10.1016/j.expthermflusci.2017.10.035

Cited by 32 publications

(4 citation statements)

References 29 publications

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“…It was observed that the Nusselt number is significantly impacted by the usage of higher gap heights . The same research group [15] extended their work experimentally [17] to investigate the impact channel blockage ratio for various grades of the aluminum foam blocks (5, 20, and 40) PPI at a fixed porosity of 93.8% on the heat transfer and pressure drop. The results showed that the aluminum foam blocks lead to better thermal performance with lower pressure drops than those generated with solid aluminum blocks.…”

Section: Introductionmentioning

confidence: 99%

Effect of Copper Foam Baffles on Thermal Hydraulic Performance for Staggered Arrangement in a Duct

Fadhala¹,

Fayyadh²,

M³

2022

ETJ

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 Experimental study of the copper foam baffle on heat transfer and friction factor.  Study the grade influence of pore density for copper foam baffles at fixed porosity on the flow and thermal behavior.  The copper foam baffles were compared with solid copper baffles.M etal foam is a novel material recently utilized in baffles as an alternative to solid baffles for reducing flow resistance. However, copper foam baffles have been suggested in this research to overcome this issue. So, the experimental tests were carried out in a manufactured square channel (250 mm x 250 mm) and heated uniformly at the bottom wall of the test section. Its walls are mounted copper foam baffles at a fixed porosity of 95%. Baffles were fixed alternatively on the top and bottom of the walls in staggered mode between two successive baffles (center to center) and were kept constant at 250 mm. The experimental work was done for different grades of the pore density of copper foam (10, 15, and 20 pores per inch (PPI)) with a window cut ratio of 25% and a constant heat flux of 4.4 kW/m 2 . Reynolds number was varied from 3.8x10 4 to 5.4x10 4 . The data for conventional copper solid baffles were used to compare the effect of foam metal baffles. The obtained results manifested that relative to the solid-copper baffles, the copper foam baffles have a greatly lower friction factor, whereas the friction factor for the solid baffles and copper foam baffles (10, 15, and 20) PPI is about (460), and (20, 29, and 38) times, respectively above the smooth surface. M oreover, the results of previous work predicted the present experimental work very well.

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Section: Introductionmentioning

confidence: 99%

Effect of Copper Foam Baffles on Thermal Hydraulic Performance for Staggered Arrangement in a Duct

Fadhala¹,

Fayyadh²,

M³

2022

ETJ

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“…The disordered geometrical structure and the possibility of mixing flows inside the porous medium make it possible to use OCF as a heat exchanger [5][6][7][8]. Simultaneously, the porous structure's continuity makes it possible to remove or supply heat in a gaseous medium effectively.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the effective porosity of an open cell foam material for using in heat and mass transfer numerical simulations

et al. 2021

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A comparison of the efficiency of the open cell foam (OCF) models is carried out. Geometrical models are constructed by the methods of simple cubic, body-centered cubic, and face-centered cubic. The parameter of the material efficiency is defined as the composition of the material surface area and the gas residence time in the porous media. The analytical evaluation shows different values of effective porosity for different construction models of the material. In this case, for all considered models, the effective porosity is in the range of 0.741-0.821.

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“…One of the most efficient designs of such heat exchangers uses for filling a highly porous material with a variable relative thickness of the porous material. The body has a cylindrical, round, or oval cross-section [22,23].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Efficiency of Using Heat Exchangers with Porous Inserts in Heat and Gas Supply Systems

et al. 2020

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The creation of efficient and compact heat exchangers is one of the priority tasks arising during the design of heat and gas supply to industrial and residential buildings. As a rule, finned surfaces and turbulization of heat carrier flows are used to increase the efficiency of heat exchange in heat exchangers. The present paper proposes to use novel materials, namely porous material, in the design of highly efficient heat exchangers. The investigation was carried out experimentally and theoretically. To study the possibility of creating such heat exchangers, a multi-purpose test bench is created. The aim of the study was to assess the intensity of heat transfer in heat exchangers using porous metal. Laboratory tests are carried out as part of the experimental study. In the theoretical study, the classical equation for the change in the heat flux density when the coolant passes through the porous insert was used. As a result, a mathematical model was obtained in the form of a second-order differential equation. Boundary conditions were set and a particular solution was obtained. The results of theoretical calculations were compared with experimental data. The performed study experimentally confirmed the efficiency of using porous metal inserts in the design of shell-and-tube heat exchangers. The compiled mathematical model allows one to perform engineering calculations of the considered heat exchangers with porous inserts.

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Enhancement of heat exchanger thermal hydraulic performance using aluminum foam

Cited by 32 publications

References 29 publications

Effect of Copper Foam Baffles on Thermal Hydraulic Performance for Staggered Arrangement in a Duct

Effect of Copper Foam Baffles on Thermal Hydraulic Performance for Staggered Arrangement in a Duct

Evaluation of the effective porosity of an open cell foam material for using in heat and mass transfer numerical simulations

Analysis of the Efficiency of Using Heat Exchangers with Porous Inserts in Heat and Gas Supply Systems

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