Comparison of metal foam heat exchangers to a finned heat exchanger for low Reynolds number applications

Huisseune, Henk; Schampheleire, Sven De; Ameel, Bernd; Paepe, Michel De

doi:10.1016/j.ijheatmasstransfer.2015.05.013

Cited by 85 publications

(29 citation statements)

References 57 publications

(79 reference statements)

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“…From their results, at relatively low Reynolds numbers, the values of friction factor are lower for the porous media. Huisseune et al [ 24 ] performed two dimensional numerical simulations adopting the thermal non-equilibrium energy model on metal foam heat exchangers. They found that louvered fins heat exchangers exhibit better performance than heat exchanger made by foam, underlining the need of an optimization for such solutions.…”

Section: Introductionmentioning

confidence: 99%

Influence of Thermal Contact Resistance of Aluminum Foams in Forced Convection: Experimental Analysis

2017

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In this paper, the heat transfer performances of aluminum metal foams, placed on horizontal plane surface, was evaluated in forced convection conditions. Three different types of contacts between the sample and the heated base plate have been investigated: simple contact, brazed contact and grease paste contact. First, in order to perform the study, an ad hoc experimental set-up was built. Second, the value of thermal contact resistance was estimated. The results show that both the use of a conductive paste and the brazing contact, realized by means of a copper electro-deposition, allows a great reduction of the global thermal resistance, increasing de facto the global heat transfer coefficient of almost 80%, compared to the simple contact case. Finally, it was shown that, while the contribution of thermal resistance is negligible for the cases of brazed and grease paste contact, it is significantly high for the case of simple contact.

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Section: Introductionmentioning

confidence: 99%

Influence of Thermal Contact Resistance of Aluminum Foams in Forced Convection: Experimental Analysis

2017

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“…The analytical results revealed that for the same fan power and heat transfer performance, the metal foam heat exchanger is significantly more economical in both size and weight for a wide range of design requirements. In another comparison study [18], it was observed that the heat transfer rate offered by metal-foam heat exchangers is up to six times better than that in the case of the bare-tube bundle with no extra fan power. Also, it was found that if the dimensions of the foamed heat exchanger are not fixed, that is, the frontal area can be manipulated, metal-foam heat exchangers outperform the louvered-fin heat exchanger.…”

Section: Applicationsmentioning

confidence: 97%

High-Porosity Metal Foams: Potentials, Applications, and Formulations

Alhusseny

Nasser

Al-zurfi

2018

Porosity - Process, Technologies and Applications

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This chapter is aimed as a concise review, but well-focused on the potentials of what is known as "High-porosity metal foams," and hence, the practical applications where such promising media have been/can be employed successfully, particularly in the field of managing, recovering, dissipating, or enhancing heat transfer. Furthermore, an extensive comparison is conducted between the formulations presented so far for the geometrical and thermal characteristics concerning the heat and fluid flow in opencell metal foams.

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“…Nowadays it is increasingly important to look for new techniques that can lead to an improvement in the efficiency of the various industrial plants trying to reduce the environmental impact. Several authors [1][2][3] find in the metal foams, assumed as porous media, a tempting method for heat transfer enhancement. In fact, these materials are widely employed in many industrial applications such as heat exchangers [4], fuel cells and solar power systems [5], automotive thermoelectric generator [6], latent thermal energy storage [7].…”

Section: Introductionmentioning

confidence: 99%

Entropy Generation Analysis on Heat Exchanger in Aluminum Foam

Buonomo¹,

Pasqua²,

Manca³

et al. 2021

TI-IJES

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Heat exchangers, widely used in the industrial sector, are often the subject of study to find techniques to increase their efficiency. One of the most effective techniques is that which involves the use of metal foams. The application of metal foams in heat exchangers allows for greater efficiency, a more compact and lighter device, high thermal conductivity and a large accessible surface per unit of volume. Entropy generation analysis on compact heat exchanger in aluminum foam is accomplished. The governing equations in two-dimensional steady state regime are written in local thermal non-equilibrium (LTNE). The geometrical domain under investigation is made up of a plate in aluminum foam with inside a single array of five circular tubes. The foams are characterized by a porosity in the range from 0.90 to 0.97 and different pores per inch, equal to 5, 10, 20 and 40. The LTNE assumption is employed to simulate the heat transfer between metal foam and air and evaluate the global entropy generations. The compact heat exchanger at different air flow rates is studied with an assigned surface tube temperature. The results in terms of global entropy generations and in terms of Bejan number Be related to the thermal and viscous effects are given.

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Comparison of metal foam heat exchangers to a finned heat exchanger for low Reynolds number applications

Cited by 85 publications

References 57 publications

Influence of Thermal Contact Resistance of Aluminum Foams in Forced Convection: Experimental Analysis

Influence of Thermal Contact Resistance of Aluminum Foams in Forced Convection: Experimental Analysis

High-Porosity Metal Foams: Potentials, Applications, and Formulations

Entropy Generation Analysis on Heat Exchanger in Aluminum Foam

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