Optimization of thermal performances and pressure drop of rectangular microchannel heat sink using aqueous carbon nanotubes based nanofluid

Halelfadl, Salma; Adham, Ahmed Mohammed; Mohd‐Ghazali, Normah; Maré, Thierry; Estellé, Patrice; Ahmad, Robiah

doi:10.1016/j.applthermaleng.2013.08.005

Cited by 123 publications

(51 citation statements)

References 35 publications

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“…They also showed that the thermal resistance varies from 10% to 35% depending on the hydraulic diameter. Halelfadl et al (2014) have recently shown from numerical optimization analysis that CNTs' water-based nanofluid as a working fluid reduces the total thermal resistance of MCHS and can significantly enhance the thermal performance of the working fluid, particularly at high temperatures. The performance of solar radiation absorption in a short wave by a CNT is demonstrated by Shende and Sundara (2015).…”

Section: Introductionmentioning

confidence: 99%

Thermal Performance of Carbon Nanotube Nanofluids in Solar Microchannel Collectors: an Experimental Study

Ahlatli¹,

Maré²,

Estellé³

et al. 2016

IJTech

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Many studies show that nanofluids, especially with carbon nanotubes, improve heat transfer. Other studies show that a nanofluid is a good candidate for solar systems because of its good absorptivity. We are facing an increasing number of miniaturized and more powerful systems. Especially in microelectronics, small heat sinks with high heat transfer are being developed, called micro-channel heat sinks (MCHS). In this paper, the heat transfer behavior of carbon nanotube-water nanofluid in a microchannel solar collector is studied experimentally. The exchanger is composed of 16 micro-channel hydraulic diameters of 1 mm and a glass or quartz cover with a surface area of 25 cm 2 . Solar radiation is simulated by a halogen lamp. The experimental set-up includes a solar meter, pressure, and temperature sensors, and it is allowed to control the flow. The nanofluid is a solution of water containing a 0.01%, 0.05%, 0.1%, and 0.5% weight fraction, respectively, of the carbon nanotubes, which are 9.2 nm in diameter and 1.5 µm in length. Viscosity and density are measured experimentally. The evolution of efficiency and the pressure drop are presented according to the Reynolds number and are compared with the results obtained with distilled water.

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Section: Introductionmentioning

confidence: 99%

Thermal Performance of Carbon Nanotube Nanofluids in Solar Microchannel Collectors: an Experimental Study

Ahlatli¹,

Maré²,

Estellé³

et al. 2016

IJTech

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“…Nanoparticles (Nanopowder) are purchased from Alfa Aesar Corp., Ward Hill, MA and blended with deionized water without any surfactant. The nanoparticles used in the present experiments are Fe 2 NiO 4 with an average size of 50 nm and density of 5.37 g/cm 3 .…”

Section: Nanofluid Preparationmentioning

confidence: 99%

“…Due to this fact, many studies on various water-based nanofluids have been carried out in the past years [1]. For example, application of water-based nanofluids in a heat exchanger exhibits an increased heat transfer coefficient compared to pure water [2,3]. Seyf and Feizbakhshi [4] study on a numerical investigation of the application of CuO-H 2 O nanofluids in micro-pin-fin heat sinks and found a significant enhancement in heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer in a Loop Heat Pipe Using Fe₂NiO₄-H₂O Nanofluid

2017

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Abstract. Nanofluids are stable suspensions of nano fibers and particles in fluids. Recent investigations show that thermal behavior of these fluids, such as improved thermal conductivity and convection coefficients are superior to those of pure fluid or fluid suspension containing larger size particles. The use of enhanced thermal properties of nanofluids in a loop heat pipe (LHP) for the cooling of computer microchips is the main aim of this study. Thus, the Fe2NiO4-H2O served as the working fluid with nanoparticle mass concentrations ranged from 0 to 3 % in LHP for the heat input range from 20W to 60W was employed. Experimental apparatus and procedures were designed and implemented for measurements of the surface temperature of LHP. Then, a commercial liquid cooling kit of LHP system similar as used in experimental study was installed in real desktop PC CPU cooling system. The test results of the proposed system indicate that the average decrease of 5.75 o C (14%) was achieved in core temperatures of desktop PC CPU charged with Fe2NiO4-H2O as compared with pure water under the same operating conditions. The results from this study should find it's used in many industrial processes in which the knowledge on the heat transfer behavior in nanofluids charged LHP is of uttermost importance.

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“…The MCHS has made it a favorite choice for electronic cooling systems' devices in microprocessors, radars, laser diode arrays and high-energy laser mirrors [2]. The rectangular MCHS has perhaps received the most attention due to ease of machining and its proven excellent thermal performance compared to others [3][4][5][6]. Research into increasing the performance of a MCHS using different channel geometry, coolants, flow regime, structural materials, and optimization tools have been completed with different outcomes presented and discussed [7].…”

Section: Introductionmentioning

confidence: 99%

Comparison of the optimized thermal performance of square and circular ammonia-cooled microchannel heat sink with genetic algorithm

Normah

Chien

et al. 2015

Energy Conversion and Management

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Optimization of thermal performances and pressure drop of rectangular microchannel heat sink using aqueous carbon nanotubes based nanofluid

Cited by 123 publications

References 35 publications

Thermal Performance of Carbon Nanotube Nanofluids in Solar Microchannel Collectors: an Experimental Study

Thermal Performance of Carbon Nanotube Nanofluids in Solar Microchannel Collectors: an Experimental Study

Heat Transfer in a Loop Heat Pipe Using Fe₂NiO₄-H₂O Nanofluid

Comparison of the optimized thermal performance of square and circular ammonia-cooled microchannel heat sink with genetic algorithm

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Optimization of thermal performances and pressure drop of rectangular microchannel heat sink using aqueous carbon nanotubes based nanofluid

Cited by 123 publications

References 35 publications

Thermal Performance of Carbon Nanotube Nanofluids in Solar Microchannel Collectors: an Experimental Study

Thermal Performance of Carbon Nanotube Nanofluids in Solar Microchannel Collectors: an Experimental Study

Heat Transfer in a Loop Heat Pipe Using Fe2NiO4-H2O Nanofluid

Comparison of the optimized thermal performance of square and circular ammonia-cooled microchannel heat sink with genetic algorithm

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Product

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Heat Transfer in a Loop Heat Pipe Using Fe₂NiO₄-H₂O Nanofluid