Experimental study on the effect of perforations shapes on vertical heated fins performance under forced convection heat transfer

Ibrahim, Thamir K.; Mohammed, Marwah Noori; Kamil, Mohammed; Najafi, G.; Sidik, Nor Azwadi Che; Basrawi, Firdaus; Abdalla, Ahmed N.; Hoseini, S.S.

doi:10.1016/j.ijheatmasstransfer.2017.11.047

Cited by 76 publications

(24 citation statements)

References 37 publications

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“…The principle of using fins in heat exchangers is to enhance the thermal performance. The arrangement of the annular‐finned tubes with inline and staggered arrays has several engineering applications …”

Section: Introductionmentioning

confidence: 99%

“…According to the literature review, there are very few investigations on the fin spacing of annular‐finned tube and most of these studies are experiments . Some of these investigations stated that the boundary layers developments are affected by fin spacing . A research by Jameson revealed that the fin spacing is considered as a very effective parameter on the heat transfer coefficient with a remarkable effect on the pressure drop…”

Section: Introductionmentioning

confidence: 99%

“…The arrangement of the annular-finned tubes with inline and staggered arrays has several engineering applications. [6][7][8][9][10] According to the literature review, there are very few investigations on the fin spacing of annular-finned tube and most of these studies are experiments. 2,[11][12][13][14] Some of these investigations stated that the boundary layers developments are affected by fin spacing.…”

Section: Introductionmentioning

confidence: 99%

“…2,[11][12][13][14] Some of these investigations stated that the boundary layers developments are affected by fin spacing. 9,11,[15][16][17] A research by Jameson 13 revealed that the fin spacing is considered as a very effective parameter on the heat transfer coefficient with a remarkable effect on the pressure drop. [18][19][20] Another study was conducted by Zhukauskas 21 for the three-flow regimes, such as laminar, turbulent, and separated flow in finned tube heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

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Numerical estimation of pressure drop and heat transfer characteristics in annular‐finned channel heat exchangers with different channel configurations

Doori

2019

Heat Trans. Asian Res.

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In this numerical investigation, three‐dimensional analysis has been used to study the effect of finned channels configuration of (circular, square, and triangular shape) and fin spacing with four rows in staggered arrangements. The finite volume method with k‐ ω turbulent model is applied to estimate the heat transfer and flow characteristics. The results illustrate that the development of the boundary layer between the fins surfaces is credited to the finned channels configuration, fin spacing, and Reynolds number. Moreover, the results of pressure drop and heat transfer with various channel configuration and different fin spacings (1.6, 2, and 4 mm) are presented and validated with the available correlations. The triangular‐finned channel with 1.6 mm fin spacing offered higher heat transfer enhancement followed by square‐ and circular‐finned channels. A considerable agreement was observed when the current findings and the existing correlations were compared, with a maximum deviation of 15% for all the cases.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical estimation of pressure drop and heat transfer characteristics in annular‐finned channel heat exchangers with different channel configurations

Doori

2019

Heat Trans. Asian Res.

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“…Nanofluids are a combination of nanoparticles dispersed in a base fluid and have higher thermal conductivity compared to the base fluid, which gives them an the potential to serve as coolants. The motivation behind nanofluids can be credited to Maxwell's expectation of enhancing the thermal conductivity of fluids by utilizing solid nanoparticles. Employing nanofluids with changing inner geometrics of tubes is an extremely efficient approach to increasing the performance of heat transfers of these equipment.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of forced convection heat transfer in different internally ribbed tubes configuration using TiO₂ nanofluid

Kumait

Ibrahim

Abdullah

2019

Heat Trans. Asian Res.

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Improvement of heat transfer through fins: A brief review of recent developments

Maji¹,

Choubey

2020

Heat Trans

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Fins or extended surfaces are generally used in heat exchangers to enhance heat transfer between the main surface and ambient fluid. Various types of simple-shaped fins, namely, rectangular, square, annular, cylindrical, and tapered, have been used with different geometrical combinations. To satisfy industrial demand, different trials have also been carried out for designing optimized fins. The optimization of fins can be performed either by enhancing heat dissipation at an exact fin weight or by diminishing the weight of the fin by precise heat dissipation. Recently a notable amount of work on some typical fins, like, porous fins and perforated fins, has also been carried out. This paper presents a brief review on heat transfer enhancement using fins of different types considering variable thermophysical and geometric parameters, which will also be useful for future use of geometrical modifications of extended surfaces, based on the cost and availability of space.analytical approach, computational approach, experimental approach, perforated fin, porous fin | INTRODUCTIONAdvanced technologies need high-performance heat transfer equipment. Techniques for enhancing the heat transfer rate are classified into two categories: active and passive methods. In the design point of view, active methods are complex as they require some extraneous power input for necessary flow adjustments and to improve the heat transfer rate and thus applications are limited. On the other hand, passive methods require geometrical or surface adjustments to the flow passage by incorporating additional devices. Additionally, by interrupting or varying the existing flow behavior (except for extended surfaces); higher heat transfer coefficients are promoted through this method, which is also followed by an increase in the corresponding pressure drop. The amount of conduction, convection, and radiation of an object shows the amount of heat it transfers. The heat transfer rate is enhanced by increasing the temperature difference between the object and the environment or by enhancing the coefficient of convective heat transfer or by maximizing the surface area of the body. In some cases, it is not appropriate or cost effective to alter the first two options. Introducing a fin to a body, however, expands the surface area and sometimes this is a cost-effective solution for heat transfer problems. Extended surfaces or fins are illustrations of passive methods that are generally used in different industrial applications for the enhancement of heat transfer between the primary surface (heat sink) and the surrounding fluid. Currently reducing the cost and size of fins is the key target of the fin industry. This demand is generally met by the high-thermal-conductivity and costly metals used to fabricate finned surfaces. Many efforts have been made to construct optimized fins. (a) By changing the size and shape of the solid fin: Instead of a longitudinal rectangular solid fin, if the geometry of fin design is changed, the performance parameters and heat tr...

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Experimental study on the effect of perforations shapes on vertical heated fins performance under forced convection heat transfer

Cited by 76 publications

References 37 publications

Numerical estimation of pressure drop and heat transfer characteristics in annular‐finned channel heat exchangers with different channel configurations

Numerical estimation of pressure drop and heat transfer characteristics in annular‐finned channel heat exchangers with different channel configurations

Experimental and numerical study of forced convection heat transfer in different internally ribbed tubes configuration using TiO₂ nanofluid

Improvement of heat transfer through fins: A brief review of recent developments

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Experimental study on the effect of perforations shapes on vertical heated fins performance under forced convection heat transfer

Cited by 76 publications

References 37 publications

Numerical estimation of pressure drop and heat transfer characteristics in annular‐finned channel heat exchangers with different channel configurations

Numerical estimation of pressure drop and heat transfer characteristics in annular‐finned channel heat exchangers with different channel configurations

Experimental and numerical study of forced convection heat transfer in different internally ribbed tubes configuration using TiO2 nanofluid

Improvement of heat transfer through fins: A brief review of recent developments

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Experimental and numerical study of forced convection heat transfer in different internally ribbed tubes configuration using TiO₂ nanofluid