Natural convection heat transfer from inclined plate-fin heat sinks

Tarı, İlker; Mehrtash, Mehdi

doi:10.1016/j.ijheatmasstransfer.2012.08.050

Cited by 117 publications

(34 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the heat transfer coefficient of the plate-fin array installed in the primary handheld projector, which ranges from 6 W/m 2 ·K to 7 W/m 2 ·K, is even lower than that of the plate-fin array placed in an infinite medium. The deviation between the value predicted by the correlation [18] and the present data continuously rises from 10% at 2 W to 26% at 7 W as show in Figure 6. The significant difference is likely because the case of the handheld projector and the complicated layout in the handheld projector prevent the warm air around the fin array inside the handheld projector from discharging.…”

Section: Figuresupporting

confidence: 56%

“…In addition, the heat transfer coefficient of a surface with identical surface temperature and dimensions to the aforementioned surface in the plate-fin array in the study was also estimated using several selected correlations. Those selected correlations are applicable for the estimation of the heat transfer coefficient of either a vertical, single plate [3,4,6] or a plate-fin array [9,11,18] in an infinite, still medium. Figure 6 demonstrates the comparison of the heat transfer coefficient among those data.…”

Section: Figurementioning

confidence: 99%

“…Numerous heat transfer correlations on the natural convection of an isolated surface with various inclinations in form of Nu = CRa n have been proposed [3][4][5][6][7][8]. To some degree, those heat transfer studies on an isolated surface formed the foundation of numerous following studies which investigated various effects on the natural convection heat transfer of a fin array in an infinite, still medium [9][10][11][12][13][14][15][16][17][18]. The results of those studies revealed that the fin material, fin pattern, and the spacing between fins, as well as the fin thickness affect the thermal performance of the fin array.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Numerical Study on Natural Convection Heat Transfer of Handheld Projectors with a Fin Array

2017

View full text Add to dashboard Cite

This study numerically investigates the effects of the number of bottom openings and the fin spacing on both the natural convection heat transfer and airflow field of the handheld projector with various orientations. The horizontally-oriented 120 mm × 53 mm × 19 mm handheld projector, which had 11 bottom openings and was installed with either 7 plate fins or 13 rows of square pin, was considered as the primary case. The fin number varied from 6 plates to 13 plates or from 7 pin rows to 16 pin rows, while the bottom openings varied from 11 to 15 in this study with handheld projector held at a specified inclination ranging from −90 • to 90 • . The results showed that the heat transfer coefficient of a specific surface of the plate-fin array installed in the primary handheld projector increased from 6 to 7 W/m 2 ·K as the heating power increased from 2 W to 7 W. The optimal fin spacing in the handheld projector possessing 11 bottom openings was 2.875 mm and 3.375 mm for the plate-fin and pin-fin, respectively, at a heating power of 7 W. Although the velocity magnitude of the airflow between fins increased as the bottom opening increased, it was not able to offset the reduction of the airflow velocity resulting from the fin spacing reduction.

show abstract

Section: Figuresupporting

confidence: 56%

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Numerical Study on Natural Convection Heat Transfer of Handheld Projectors with a Fin Array

2017

View full text Add to dashboard Cite

show abstract

“…Many investigations have focused on the design of heat sinks with rectangular base and fins subject to natural convection [4][5][6][7][8][9]. A correlation for predicting the convection heat transfer around a rectangular heat sink was presented [4].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on the heat sink with radial fins and a concentric ring subject to natural convection

Byon

2015

Applied Thermal Engineering

View full text Add to dashboard Cite

“…Results show that the flow pattern is not symmetric due to the combined effect of non-isothermal glass wall and radiative exchange inside the cavity. Tari et al (2013), in order to obtain a validated model that is used for investigating inclined orientations of a heat sink, investigated the steady-state natural convection from heat radiators with parallel arrangement of rectangular cross section vertical plate fins on a vertical base * Corresponding author. Email: vipzhuangjian@163.com numerically.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Metal-Plastic Composite Heat Radiator With Hemispherical Microstructure Array

Jiang¹,

Wu²,

Zhuang³

et al. 2015

Frontiers in Heat and Mass Transfer

View full text Add to dashboard Cite

A new type of metal-plastic composite heat radiator with hemispherical microstructure array was proposed in this paper. The influence of the geometrical parameters of the microstructure array, including size of the hemisphere, configuration of hemisphere, tilt angle of the radiator, thermal conductivity and radiation emissivity of the plastic, on the process of heat transfer under natural convection were numerically simulated. It was concluded that the metal-plastic composite heat radiator with hemispherical microstructure array had comparable heat transfer behaviors with those of metal heat radiator. So it is possible to replace metal heat radiator by such a metal-plastic composite heat radiator in case of high moisture or corrosion applications. Under the same volume, the cooling capacity of the heat radiator made of metal-plastic was 20 times as the heat radiator made of metal. The heat flux of plastic plate with hemispherical microstructure was superior to the ordinary flat plastic plate. And the former heat flux was 2050 W/m 2 , about two times as the latter, 1272W/m 2 . The optimal inclination angle of the heat radiator with maximum heater flux was around 45°.

show abstract

Natural convection heat transfer from inclined plate-fin heat sinks

Cited by 117 publications

References 22 publications

A Numerical Study on Natural Convection Heat Transfer of Handheld Projectors with a Fin Array

A Numerical Study on Natural Convection Heat Transfer of Handheld Projectors with a Fin Array

Experimental and numerical study on the heat sink with radial fins and a concentric ring subject to natural convection

Numerical Simulation of Metal-Plastic Composite Heat Radiator With Hemispherical Microstructure Array

Contact Info

Product

Resources

About