Experimental investigation of the effects of orientation angle on heat transfer performance of pin-finned surfaces in natural convection

Sertkaya, Ahmet Ali; Bilir, Şefik; Kargici, S.

doi:10.1016/j.energy.2011.01.014

Cited by 42 publications

(4 citation statements)

References 14 publications

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“…Sertkaya et al [13] experimentally investigated the effect of orientation angle on the natural convection heat transfer of pin finned heat sink. They concluded that there is a considerable effect on the heat transfer.…”

Section: Literature Surveymentioning

confidence: 99%

Multi-objective geometric optimization of a PCM based matrix type composite heat sink

2015

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Section: Literature Surveymentioning

confidence: 99%

Multi-objective geometric optimization of a PCM based matrix type composite heat sink

2015

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“…Pin fin heatsinks are advantageous in natural convection solutions as the heat per unit mass heat dissipation is high [16]. There are many studies being conducted for improvisation in the efficiency of pin fin heat sinks [17][18][19][20][21]. Advancement in the performance is done by modifications in length and diameters of pins, void fractions of pins, aspect ratio of pins and distance between adjacent fins [22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

A Study and Analysis on the Thermal Performance of a Pin Fin Heatsink for Natural Convection using CFD

J¹,

Rangu²

2017

IJERT

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Thermal problems can be solved by a cheapest, simple and best means by using heatsinks. Where there is a need to dissipate the heat from a hot body to another medium, heatsinks are used. The heatsink application is widely spread across many domains. In this paper, we would like to understand the thermal benefits of using a porous pin fin heatsink when compared to a conventional pin fin heatsink. The cross section of the heatsink used in the analysis is square shaped. The Heatsink is to be analyzed numerically for natural convection assuming steady state condition. Finite volume method is considered for doing the thermal analysis using a Computational Fluid Dynamics tool called FloTHERM.

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“…Zografos and Sunderland [3] studied the effect of pin arrangement on the heat transfer performance, and reported that a choking phenomenon, which had a negative effect on heat transfer from a heat sink, was observed in the air space among pin fins. Huang et al [4], Sparrow et al [5] and Sertkaya et al [6] investigated experimentally the dependence of the pin fin performance on a heat sink orientation.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Characteristics of Square Micro Pin Fins under Natural Convection

Matsumoto¹,

Tomimura²,

Koito³

2014

JECTC

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In order to comply with the recent demand for downsizing of the electric equipment, the miniaturization and the improvement in heat transfer performance of a heat sink under natural air-cooling are increasingly required. This paper describes the experimental and numerical investigations of heat sinks with miniature/micro pins and the effect of the pin size, pin height and the number of pins on heat transfer characteristics of heat sinks. Five types of basic heat sink models are investigated in this study. The whole heat transfer area of heat sinks having the different pin size, pin height and the number of pins respectively is kept constant. From a series of experiments and numerical analyses, it has been clarified that the heat sink temperature rises with increase in the number of pins. That is, the heat sink with miniaturized fine pins showed almost no effect on the heat transfer enhancement. This is because of the choking phenomenon occurred in the air space among the pin fins. Reflecting these results, it is confirmed that the heat transfer coefficient reduces with miniaturization of pins. Concerning the effects of the heat transfer area on the heat sink performance, almost the same tendency has been observed in other three series of large surface area, that is, higher pin height. Furthermore as a result of studying non-dimensional convection heat transfer performance, it was found that the relation between the Nusselt number (Nu) and the Rayleight number (Ra) is given by Nu = 0.16 Ra 0.52 .

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Experimental investigation of the effects of orientation angle on heat transfer performance of pin-finned surfaces in natural convection

Cited by 42 publications

References 14 publications

Multi-objective geometric optimization of a PCM based matrix type composite heat sink

Multi-objective geometric optimization of a PCM based matrix type composite heat sink

A Study and Analysis on the Thermal Performance of a Pin Fin Heatsink for Natural Convection using CFD

Heat Transfer Characteristics of Square Micro Pin Fins under Natural Convection

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