Partially metal foam wrapped tube bundle as a novel generation of air cooled heat exchangers

Alvandifar, Negar; Saffar‐Avval, Majid; Amani, E.

doi:10.1016/j.ijheatmasstransfer.2017.10.104

Cited by 35 publications

(12 citation statements)

References 28 publications

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“…In the first five samples, the pressure drop increases evenly with the PPI value (or pore density). As presented in Alvandifar et al, this is probably because a compact heat exchanger with a small PPI value has a larger permeability.…”

Section: Performance Of Compact Exhaust Heat Exchangers Using Variousmentioning

confidence: 99%

Compact potential of exhaust heat exchangers for engine waste heat recovery using metal foams

et al. 2019

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Summary To improve the practicability of the waste heat recovery system for internal combustion engines, the compact potential of exhaust heat exchangers using metal foams is investigated. In the present study, the performance of compact exhaust heat exchangers is compared with that of a conventional shell and tube heat exchanger in a real test bench. Both heat transfer and pressure drop performance are considered when assessing the performance of heat exchangers because these two factors normally show a trade‐off relationship when designing exhaust heat exchangers. Compared with the conventional heat exchanger, the compact heat exchanger can achieve a similar pressure drop, and at the same time the heat transfer is increased by 30%, whereas the volume and the weight are each reduced by 2/3. The performance of compact heat exchangers with six types of Ni metal foams is also investigated under different mass flow rates and thicknesses of the porous layer. Results show that the optimum compact heat exchanger enhances the comprehensive performance 1.9 times compared with original one. This study shows that metal foams have great potential in realizing a compact exhaust heat exchanger for engine waste heat recovery.

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Section: Performance Of Compact Exhaust Heat Exchangers Using Variousmentioning

confidence: 99%

Compact potential of exhaust heat exchangers for engine waste heat recovery using metal foams

et al. 2019

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“…The moment working with the heat transfer of compressed heat exchangers, it provides probability to check and replicate a variety of diverse models within several functioning circumstances with no requirement of designing of extremely costly actual proportions representative models [11,12]. However, mathematical designs with no evidence of abilities can be deceptive [13,14]. Typical studies on actual proportions designs or with smaller sized satisfactory products are worked to strengthen primary comprehension of corporal patterns, to boost numerical types and so to approximate quality of unit variables [15,16].…”

Section: Development and Analysis Of Heat Exchanger For Efficient Heamentioning

confidence: 99%

Development and Analysis of Heat Exchanger for Efficient Heat Transfer for L-Shape Wind Tunnel

Mahale,

Gadhave

2019

IJEAT

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As automation and mechanical industry growing towards next era, it becoming crucial to design each element of plant with more productive material. Out of many parameters, heat transfer is very important area of study to lower the rate of failure of numerous machines. For heat transfer control there is a need of design of efficient heat exchanger. A heat exchanger can be designed for minimization of heat energy from the wind tunnel. Impact on HE performance is important due to the thermal resistance of wind tunnel. Thermal resistance is the heat property of the tunnel material and dimensions of tunnel. Looking at application level performance, the thermal resistance is crucial element in case of aerodynamic study. The similar study is done for Apolo11 spacecraft which was important in case of landing back to earth as traveling to earth with high speed generated heat which can damage spacecraft body. Such study further leads to various domains like material research, human impact study etc. The most recently, asteroid is passed nearby of earth orbit, where aerodynamic study of NASA evaluated the pre-collision effects where thermal properties are analyzed considering the atmospheric nearby orbit as a tunnel of wind/pressure. Hence, the scenarios must be considered for heat transfer / heat exchanger design specific to the each application domain. This paper discusses about the asteroid bypass which generates heat as a major heat transfer to earth and the automobile specific modeling of heat exchanger for wind tunnel. The focus is kept on heat exchanger design which can be suggested for automobile testing procedure.

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“…The velocity in the clear region also increases as the foam height increases. Meanwhile, Alvandifar et al 17) found that by increasing the metal foam thickness, the heat transfer rate remains almost constant while the pressure drop increases. The study stated that metal foam wrapped tube banks that are only partially covered with foam would reduce the pressure drop by 60%.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study of Flow Behaviours in Porous Structure of Aluminium Metal Foam

Narasimmanaidu¹,

Anuar²,

Saat³

et al. 2021

Evergreen

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This study conducted a simulation and an experimental study on a channel that was partly filled with open-cell metal foam block. Different blockage ratios have been considered, where the foam height could occupy more than half of the channel size. The aim is to investigate the flow behaviours across the complicated structure of the porous medium. Results show that the use of Ergun and Forchheimer models showed a similar stagnant region and recirculation zone in the partially filled channel, which agreed with the experimental results. However, the deviation in pressure drop performance at a high blockage ratio is noticeable.

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Partially metal foam wrapped tube bundle as a novel generation of air cooled heat exchangers

Cited by 35 publications

References 28 publications

Compact potential of exhaust heat exchangers for engine waste heat recovery using metal foams

Compact potential of exhaust heat exchangers for engine waste heat recovery using metal foams

Development and Analysis of Heat Exchanger for Efficient Heat Transfer for L-Shape Wind Tunnel

Numerical and Experimental Study of Flow Behaviours in Porous Structure of Aluminium Metal Foam

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