Analysis of natural convective heat transfer of nano coated aluminium fins using Taguchi method

Senthilkumar, R.; Nandhakumar, A. J. D.; Prabhu, S.

doi:10.1007/s00231-012-1063-1

Cited by 31 publications

(11 citation statements)

References 19 publications

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“…The morphology of the CNT was used in the work is obtained from MWCNT, Cheap Tubes Inc. According to the specification on condition by the manufacturer, the MWCNT have an average diameter of 30-50 nm, length of 10-20 nm, and specific surface area of 60 m 2 /g, density 2.1 g/cm 3 , and purity of 95%.…”

Section: Resultsmentioning

confidence: 99%

“…In the past years, heat transfer enhancement technology has been developed and widely applied to heat exchanger applications like, refrigeration, automotives, process industry, solar water heater, etc. The usual goals are to reduce the size of a heat exchanger required for a specific heat duty and to upgrade the capacity of existing heat exchange equipment [1][2][3]. The present trend is moving toward components with augmentation, enhancement or intensification.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation on thermal performance of nano coated surfaces for air-conditioning applications

Meikandan¹,

Malarmohan²,

Hemachandran³

2017

THERM SCI

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Extended surfaces are frequently used in heat exchanging devices for increasing the heat transfer between a primary surface and the surrounding fluid. Heat transfer augmentation by providing an extended surface to air side, increases weight of the system, obstruct air-flow, increases pressure drop and pumping power to keep the fluid stream flowing. These major problems will be minimized with the help of recent developments in the field of nanotechnology that provides an avenue to augment heat transfer by providing a coating of nanometer thickness on the heat exchanger surface. The present work aims to investigate the effect of the nanocoating on the heat exchanger surface with the experiments. The experimental results show that the presence of nanocoating does not have any effect on drag change, where the actual pressure drop of the coil for air velocity of 0.6 m/s, 1.6 m/s is 20 Pa and 60 Pa, respectively. For nanocoated surface, 24.2% improvement in heat transfer rate was observed and transient temperature response of the nanocoated heat exchanger tube is higher than uncoated one for a given experimental conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental investigation on thermal performance of nano coated surfaces for air-conditioning applications

Meikandan¹,

Malarmohan²,

Hemachandran³

2017

THERM SCI

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“…They also carried out, ANOVA test for finding out the contribution of various parameters .Ko-Ta Chiang et al [5] using RSM analyze The results shows that design parameters, such as height and diameter of pin-fin and width of pitch are the significant influence factors to minimize thermal resistance and pressure drop. R.Senthilkumar, et al [6] analyzed natural convective heat transfer of nanocoated aluminum fins using Taguchi method.They found 5% more fin efficiency for coated aluminum surface. D.D.Palande,A.M.Mahalle [7] has experimentally investigated different heat sink.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Fin Spacing of Vertical Plate Fin Heat Sink in Natural Convection

Palande,

Mahalle,

Ghuge

et al. 2019

IJEAT

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Heat sinks are frequently used in the cooling of electrical and electronics devices If the heat sink have very close fin spacing, it increases the surface area but reduces the heat transfer coefficient. On the other hand, if heat sink has wide fin spacing, it reduces the surface area but increases the heat transfer coefficient. Therefore, there is need to optimize the fin spacing that enhanced the heat transfer from the heat sink. A properly selected heat sink may reduced the operating temperature and reduce the risk of failure of components. A steady state natural convective heat transfer from aluminum plate fin heat sink was examined experimentally. The length and thickness of fin was kept constant while height were varied from 5mm to 25mm and spacing varied between 5.5mm to 17mm.After experimentation, it was observed that fin spacing plays important role than any other geometrical parameters. Response surface methodology is used for optimization of fin spacing. It is observed that optimum fin spacing of heat sink is 8.28mm.The error analysis is done with the help of ANN and flow visualization were done using CFD

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“…The average percentage increase in heat transfer rate was seen to be around 12%. Senthilkumar et al [16] have chosen rectangular aluminum fins coated with CNT for analysis using the physical vapor deposition (PVD) method for enhancing the fin heat transfer rate. Convective heat transfer rates for coated and non-coated surfaces were calculated and compared.…”

Section: Introductionmentioning

confidence: 99%

Natural-convection heat transfer enhancement of aluminum heat sink using nanocoating by electron beam method

2019

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The high power density and compactness of the next generation electronic devices necessitate efficient and effective cooling methods for heat dissipation in order to maintain the temperature at an acceptable safety level. In the present work, aluminum nanocoating was employed in a heat sink to study the heat transfer performance under natural-convection conditions. The nanocoating was achieved using an electron beam method while the characteristics of nanocoated surfaces were analysed using SEM, an energy dispersive X-ray spectroscopy, surface roughness profilometry equipment and by X-ray diffraction techniques. The heat dissipation from heat sink with and without nanocoating under natural-convection has been experimentally studied at different controllable surrounding temperatures. A uniform increase in the surface roughness by the nanocoating was seen in all cases. The conclusion from several experimental results was that the effect of nanocoating in augmenting the heat transfer is more pronounced only when there is a sufficient temperature driving potential.

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Analysis of natural convective heat transfer of nano coated aluminium fins using Taguchi method

Cited by 31 publications

References 19 publications

Experimental investigation on thermal performance of nano coated surfaces for air-conditioning applications

Experimental investigation on thermal performance of nano coated surfaces for air-conditioning applications

Optimization of Fin Spacing of Vertical Plate Fin Heat Sink in Natural Convection

Natural-convection heat transfer enhancement of aluminum heat sink using nanocoating by electron beam method

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