Experimental investigation of heat transfer and flow pattern from heated horizontal rectangular fin array under natural convection

Taji, S. G.; Parishwad, Gajanan V.; Sane, N. K.

doi:10.1007/s00231-014-1308-2

Cited by 15 publications

(6 citation statements)

References 8 publications

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“…The difference in performance between the finned and foamed heat sink (reticulated22) is explained by considering the smoke visualizations in Figure 9 . The same technique was also used by Taji et al [ 31 ] to visualize the air flow through a heat sink. In Figure 9 , smoke generated by burning incense is used to visualize the air flow through the finned and aluminum foam heat sink.…”

Section: Resultsmentioning

confidence: 99%

Influence of Orientation and Radiative Heat Transfer on Aluminum Foams in Buoyancy-Induced Convection

et al. 2015

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Two differently-produced open-cell aluminum foams were compared to a commercially available finned heat sink. Further, an aluminum plate and block were tested as a reference. All heat sinks have the same base plate dimensions of four by six inches. The first foam was made by investment casting of a polyurethane preform and has a porosity of 0.946 and a pore density of 10 pores per linear inch. The second foam is manufactured by casting over a solvable core and has a porosity of 0.85 and a pore density of 2.5 pores per linear inch. The effects of orientation and radiative heat transfer are experimentally investigated. The heat sinks are tested in a vertical and horizontal orientation. The effect of radiative heat transfer is investigated by comparing a painted/anodized heat sink with an untreated one. The heat flux through the heat sink for a certain temperature difference between the environment and the heat sink’s base plate is used as the performance indicator. For temperature differences larger than 30 ∘C, the finned heat sink outperforms the in-house-made aluminum foam heat sink on average by 17%. Furthermore, the in-house-made aluminum foam dissipates on average 12% less heat than the other aluminum foam for a temperature difference larger than 40 ∘C. By painting/anodizing the heat sinks, the heat transfer rate increased on average by 10% to 50%. Finally, the thermal performance of the horizontal in-house-made aluminum foam heat sink is up to 18% larger than the one of the vertical aluminum foam heat sink.

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Section: Resultsmentioning

confidence: 99%

Influence of Orientation and Radiative Heat Transfer on Aluminum Foams in Buoyancy-Induced Convection

et al. 2015

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“…Kallanavar and Kapale [45] concluded the heat transfer coefficient increases with increase in fin spacing. Taji et al [46] commented that rectangular notched fin arrays provide high heat transfer rate compared with triangular and semicircular notched structures. What's more, it was revealing that with raising the fin spacing; heat transfer coefficient reaches an optimum value.…”

Section: Studies On Interrupted Rectangular Finsmentioning

confidence: 99%

Review on Heat Transfer Enhancement by Rectangular Fin

Chakma

Abedin

2021

IJEMM

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Heat generation of engineering appliances has bad effect in handling the system can cause the trouble, short life cycle of machines, frequent maintenance requirements and low reliability of systems. The passive cooling technique has been widely used to solve such problems. This review work summarizes the heat transfer enhancement technique in a rectangular fin with economic way. So many research about the enhancement of heat transfer by rectangular fins experimentally and numerically and found very significant result. In this review, various types of rectangular fin structures are studied simultaneously. It is revealed through reviewing the related literature that the highest value of equivalent heat transfer enhancement is found the increase in average heat transfer performance of inverted triangular notched fin 50.51% as compared with plane rectangular fin and the perforated fin total heat transfer rate increased by 38.9% compared to regular fin. Furthermore, by reduction of the optimal fin spacing, heat flux can be changed by 20% in standard rectangular fin when compared with regular fin spacing. Also cooling performance of the inclined rectangular fin with 60° of tilt angle is seen to be as 6% higher than solid rectangular fin. This article can be considered as a benchmark in the practical application for enhances the heat transfer rates.

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“…As notched fin material both aluminum and copper was used. Taji et al [56]'s experimental data is used to verify the numerical results. They commented that rectangular notched fin arrays provide greater heat transfer rate than triangular and semicircular notched structures.…”

Section: Numerical Studies For Interrupted Rectangularmentioning

confidence: 99%

Review of Enhancement of Heat Transfer From Rectangular Fin Arrays

Ayli

İnce²

2018

Mugla Journal of Science and Technology

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Heat transfer removal rate from surfaces is great importance in many engineering applications. For many industrial applications like automotive, air conditioning, electronic cooling, spacecraft and aircraft applications, internal heat generation can cause overheating problems that may result in system failure, short machine life, need of maintenance and low system reliability. To solve such problems passive cooling techniques are widely used. This article summarizes an extensive literature review of rectangular fin structures that is much-used heat transfer enhancement technique with a high efficiency rate and a low cost. Moreover, in this study not only solid rectangular fin structures are studied but also inclined, perforated and staggered type rectangular fin studies are summarized. To increase the heat transfer rates and Nusselt number distributions, designers should optimize the parameters such as fin number, fin shape, fin height, fin diameter and inter-fin distance ratio for all of the fin types. In the optimization process of those components, designers should have experience with the fin design procedure; without the necessary experience and knowledge, instead of increasing the heat transfer rates, fin surfaces can resist and block the incoming air flow which will affect heat transfer rate adversely. This review is a guideline for designers presenting how rectangular fin arrays are used to enhance heat transfer rates.

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Experimental investigation of heat transfer and flow pattern from heated horizontal rectangular fin array under natural convection

Cited by 15 publications

References 8 publications

Influence of Orientation and Radiative Heat Transfer on Aluminum Foams in Buoyancy-Induced Convection

Influence of Orientation and Radiative Heat Transfer on Aluminum Foams in Buoyancy-Induced Convection

Review on Heat Transfer Enhancement by Rectangular Fin

Review of Enhancement of Heat Transfer From Rectangular Fin Arrays

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