Thermal resistance of screen mesh wick heat pipes using the water-based Al2O3 nanofluids

Hyung, Kyu; Ha, Hyo Jun; Jang, Seok Pil

doi:10.1016/j.ijheatmasstransfer.2010.07.050

Cited by 103 publications

(50 citation statements)

References 15 publications

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“…The important finding from these results is that the increment in viscosity of the NF compared with the base fluid is more than two times higher than the thermal conductivity increment of the NF. [16] Screenmesh Water based alomina (30 nm &2.4 wt.%) + Kang et al [17] Sintered Water based silver (10 nm & 0.01 wt.%) + Liu et al [18] Grooved Water based copper oxide (50 nm & 1.0 wt.%) + Kang et al [19] Grooved Water based silver Ag-water (35 nm, 0.01 wt.%) + Ji et al [20] Oscillating …”

Section: Working Fluidmentioning

confidence: 99%

Thermal performance of screen mesh heat pipe with Al2O3 nanofluid

Ghanbarpour

Nikkam

Khodabandeh

et al. 2015

Experimental Thermal and Fluid Science

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a b s t r a c tThis study presents the effect of Al 2 O 3 nanofluid (NF) on thermal performance of screen mesh heat pipe in cooling applications. Three cylindrical copper heat pipes of 200 mm length and 6.35 mm outer diameter containing two layers of screen mesh were fabricated and tested with distilled water and water based Al 2 O 3 NF with mass concentrations of 5% and 10% as working fluids. To study the effect of NF on the heat pipes thermal performance, the heat input is increased and then decreased consecutively and the heat pipes surface temperatures are measured at steady state conditions. Results show that using 5 wt.% of Al 2 O 3 NF improves the thermal performance of the heat pipe for increasing and decreasing heat fluxes compared with distilled water, while utilizing 10 wt.% of Al 2 O 3 NF deteriorates the heat pipe thermal performance. For heat pipe with 5 wt.% Al 2 O 3 NF the reduction in thermal resistance of the heat pipe is found to be between 6% and 24% for increasing and between 20% and 55% for decreasing heat fluxes, while the thermal resistance increased between 187% and 206% for increasing and between 155% and 175% for decreasing steps in heat pipe with 10 wt.% of Al 2 O 3 NF.

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Section: Working Fluidmentioning

confidence: 99%

Thermal performance of screen mesh heat pipe with Al2O3 nanofluid

Ghanbarpour

Nikkam

Khodabandeh

et al. 2015

Experimental Thermal and Fluid Science

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“…The Two-phase closed thermosyphon heat pipes are one of the simplest and efficient types of heat pipes which can widely be employed in micro device cooling, computers, solar energy collectors, aeronautics sciences, missiles, spacecraft thermal control, micro-transportation systems, cooling loops, fuel cells and heat recovery systems. Do et al [2] experimentally investigated the effect of Al2O3/water nanofluids on the thermal performance of a heat pipe and found that the thermal resistance was reduced by about 40% at the evaporator-adiabatic section of the heat pipe. They concluded that the Al2O3 nanoparticles formed a thin porous coating layer at the evaporator section, and the improved surface wettability and capillary wicking performance reduced the thermal resistance of the heat pipe.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Enhancement Using Graphene Oxide/Water Nanofluid in a Two-Phase Closed Thermosyphon

Salem¹,

Meachail²,

Bassily³

et al. 2017

IJEE

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“…Several factors affecting the performance of a heat pipe are the working fluid, the wick structure and the geometry of the heat pipe [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. From the development of nanotechnology and heat transfer, numerous efforts have been done to obtain better heat transfer.…”

Section: Introduction *mentioning

confidence: 99%

“…They showed that the concentration of nanoparticles in the base fluid improves the performance of the heat pipe [22]. Do et al conducted a study to the thermal resistance of screen mesh wick heat pipes using the Al 2 O 3 -water nanofluid which yield the results that the volume fraction of 3% Al 2 O 3 nanofluid with water-based fluids can improve the performance of heat pipes significantly: heat at the evaporator is reduced by up to 40%, and smaller thermal resistance [23]. Paisarn and Naphon examined the thermal efficiency of heat pipes with titanium nanofluid.…”

Section: Introduction *mentioning

confidence: 99%

Characteristics of Screen Mesh Wick Heat Pipe with Nano-fluid as Passive Cooling System

et al. 2013

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The heat pipe is one of the cooling media which is potential to be developed for the passive cooling system for nuclear reactors. To enhance the performance of the heat pipe, nanofluids have been used as the working fluid for the heat pipe. This paper studies the characteristics of nanofluids as the working fluid of heat pipe with screen mesh wick, which was the mixture of nano-sized particles (Al 2 O 3 and TiO 2 ) with water as the base fluid. The nanoparticles have average diameter of 20 nm, made with 1% to 5% volume fraction. The heat pipe thermal performance was tested using heater with different heat load. The experimental result shows the use of 5% Al 2 O 3 -water improve the thermal performance by reducing the temperature at evaporator side as much as 23.7% and the use of TiO 2 -water reduce the temperature at evaporator side as much as 20.2% compared to the use of water. The use of nanofluid also decreases the thermal resistance of heat pipe. As the use of nanofluid improves thermal performance of heat pipe, it has a potential for applications along with heat pipes at nuclear reactors.

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Thermal resistance of screen mesh wick heat pipes using the water-based Al2O3 nanofluids

Cited by 103 publications

References 15 publications

Thermal performance of screen mesh heat pipe with Al2O3 nanofluid

Thermal performance of screen mesh heat pipe with Al2O3 nanofluid

Heat Transfer Enhancement Using Graphene Oxide/Water Nanofluid in a Two-Phase Closed Thermosyphon

Characteristics of Screen Mesh Wick Heat Pipe with Nano-fluid as Passive Cooling System

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