Effect of nanoparticle size and concentration on boiling performance of SiO2 nanofluid

Hu, Yanwei; Li, Haoran; Liu, Ziyu; Zhao, Yunhua

doi:10.1016/j.ijheatmasstransfer.2016.11.090

Cited by 59 publications

(28 citation statements)

References 36 publications

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“…However, the thermal conductivity, specific surface area of the different nanoparticles [106,107], the difference in density between the nanoparticles and the base [85], and the affinity for the base liquid are different [107,108]. At present, the study of boiling heat transfer of nanoparticles includes metal oxides Al 2 O 3 [70][71][72][73][74][75][76][77][78][79][80][81][82][83][84][85][86], Fe 2 O 3 [76,81], Fe 3 O 4 [67,92], CuO [71,[87][88][89][90][91], ZnO [80,87,100,101], TiO 2 [79,89,[103][104][105], nonmetal oxide SiO 2 [79,81,98,99], carbon nanotubes [71,76,…”

Section: Effects Of Nanofluid Physical Properties and Heated Surface mentioning

confidence: 99%

“…Secondly, the enhanced surface wettability results in an increase in the detachment diameter of the bubble, and the bubble detachment frequency is lowered, as shown in Figure 10. The study on boiling heat transfer of nanofluids, including Al2O3 nanofluids from Sarafraz [71], Manetti [72], Ahmed [75], Sulaiman [79], Raveshi [84], Diao [85] and others; CuO nanofluids from Shoghl [87], Sarafraz [88], Karimzadehkhouei [89], Umesh [90], Heris [91], and others; as well as GNs [92], Fe3O4 [67], ZnO [101], SiO2 [99], and CNT [71,80,95,97] nanofluids, indicated that nanofluids enhance the boiling heat transfer coefficient. The current explanation for this phenomenon is that Bang [70], Ham [74], Neto [76], and Shahmoradi [78] et al experimentally studied the boiling heat transfer performance of water-based Al 2 O 3 nanofluids with different concentrations.…”

Section: Effect Of Nanoparticle Concentration On Boiling Heat Transfermentioning

confidence: 99%

“…The study on boiling heat transfer of nanofluids, including Al2O3 nanofluids from Sarafraz [71], Manetti [72], Ahmed [75], Sulaiman [79], Raveshi [84], Diao [85] and others; CuO nanofluids from Shoghl [87], Sarafraz [88], Karimzadehkhouei [89], Umesh [90], Heris [91], and others; as well as GNs [92], Fe3O4 [67], ZnO [101], SiO2 [99], and CNT [71,80,95,97] nanofluids, indicated that nanofluids enhance the boiling heat transfer coefficient. The current explanation for this phenomenon is that The study on boiling heat transfer of nanofluids, including Al 2 O 3 nanofluids from Sarafraz [71], Manetti [72], Ahmed [75], Sulaiman [79], Raveshi [84], Diao [85] and others; CuO nanofluids from Shoghl [87], Sarafraz [88], Karimzadehkhouei [89], Umesh [90], Heris [91], and others; as well as GNs [92], Fe 3 O 4 [67], ZnO [101], SiO 2 [99], and CNT [71,80,95,97] nanofluids, indicated that nanofluids enhance the boiling heat transfer coefficient. The current explanation for this phenomenon is that nanoparticles increase the number of vaporization core points on the heated surface [67,71,…”

Section: Effect Of Nanoparticle Concentration On Boiling Heat Transfermentioning

confidence: 99%

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Effect of Nanofluids on Boiling Heat Transfer Performance

Yao

Teng

2019

Applied Sciences

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At present, there are many applications of nanofluids whose research results are fruitful. Nanofluids can enhance the critical heat flux, but the effect on boiling heat transfer performance still has disagreement. Base liquids with higher viscosity improve the boiling heat transfer performance of nanofluids. When the base liquid is a multicomponent solution, the relative movement between the different solutions enhances the microscopic movement of the nanoparticles due to the different evaporation order during the boiling process, so that the boiling heat transfer performance is enhanced. Compared with the thermal conductivity of the heated surface, the deposition of the low thermal conductivity nanoparticles reduces the heat dissipation rate of the heated surface and improves the wall superheat. Then the enhancement of the boiling heat transfer coefficient should be attributed to the thermal conductivity improvement of base fluid and the bubble disturbance resulted from the nanoparticle’s microscopic motion.

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Section: Effects Of Nanofluid Physical Properties and Heated Surface mentioning

confidence: 99%

Section: Effect Of Nanoparticle Concentration On Boiling Heat Transfermentioning

confidence: 99%

Section: Effect Of Nanoparticle Concentration On Boiling Heat Transfermentioning

confidence: 99%

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Effect of Nanofluids on Boiling Heat Transfer Performance

Yao

Teng

2019

Applied Sciences

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“…Laminar and turbulent forced convection in pipes and heat exchangers are some of the common examples with no phase change flows [8,9]. Using ultrafine particles in boiling flows has attracted great attention in recent years [10,11], with the particular application in pressurized and boiling nuclear reactors. Experimental observations show both enhancement and worsening of heat transfer coefficient using nanoparticles, depending on the type and size of the nanoparticles, type of the stabilizer, base fluid and flow regime, geometry and surface roughness [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, they argued that the extreme increase in critical heat flux can be possibly concerned to the enhanced thermal conductivity, surface tension and the porous coating layer on the wire. Hu et al [10] carried out nanofluids pool boiling experiment on a horizontal cylinder with ethylene glycol/water mixture as the base fluid. Particle size and volume fraction were presented as the contributing factors in rising and dropping of the heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Exploration of nanofluid pool boiling and deposition on a horizontal cylinder in Eulerian and Lagrangian frames

Mahdavi

Sharifpur

Meyer

2018

International Journal of Heat and Mass Transfer

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In spite of many advantages of using nanoparticles in convective heat transfer, there are still some hidden aspects of nanofluids regarding simulations. Pool boiling flows are complicated regarding analytical aspects, and the presence of particles can noticeably extend this complexity. One of the most important aspects of nanofluid pool boiling is concerned with the changes in nucleation site and bubble diameter due to particles deposition and surface roughness. To include these effects, new correlations are implemented as a user-defined function for nucleation site density and bubble departure diameter. On the other hand, the particles are introduced and tracked everywhere in the domain in the Lagrangian frame by using discrete model. As an application, a tube bundle with four tubes is considered with different orientation angles concerning each other and different pitch distances. Unsteady Eulerian two-fluid model in ANSYS-Fluent is employed to simulate the liquid and vapour flows in the computational domain. In this work, pool boiling nanofluid flow is numerically solved around a two-dimensional horizontal cylinder with 20 mm diameter and compared with experimental data. The nanofluid is consist of distilled water and aluminium oxide with a particle size of 38 nm. The good agreement is found, and further discussion regarding 2 particles migration and deposition are presented. It is found that the percentage of deposition is dependent on heat flux and particle concentration. Also, heat transfer coefficient increases with expanding the horizontal distance between cylinders and then decreases to a fixed value.

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Nonlinear Absorption in Plasmonic Titanium Nitride Nanocrystals

Sabzeghabae

Berrospe‐Rodriguez

et al. 2022

Advanced Optical Materials

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Titanium nitride nanoparticles have become a research interest due to their distinguished optical and photothermal properties. Furthermore, the search for nanoparticle solutions with tunable nonlinear optical properties for laser‐based applications is critical. More specifically, third order optical nonlinearities such as reverse saturable absorption, optical liming, and self‐focusing are important in the biomedical and electronics fields. The optical nonlinearities of titanium nitride plasmonic nanoparticles are investigated as a function of material concentration in water solutions. Furthermore, the effect of nanoparticle clustering on optical nonlinearities is investigated by fabricating micrometer‐sized clusters of ≈50 nm titanium nitride particles. These studies demonstrate that the nonlinear absorption coefficient increases linearly with concentration. However, clusters require higher concentrations compared to the freestanding nanoparticles to exhibit similar nonlinear absorption coefficient and optical density. Similarly, the optical limiting threshold for titanium nitride nanoparticles appears to be lower compared to the cluster solutions, which is impacted by the collective scattering of nanoparticles and high reverse saturable absorption. In addition, self‐focusing is observed in the continuous resonant regime. This study provides an in‐depth analysis of the nonlinear optical properties of titanium nitride, with relevant consequences for applications such as sensor protection and photothermal therapy.

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Effect of nanoparticle size and concentration on boiling performance of SiO2 nanofluid

Cited by 59 publications

References 36 publications

Effect of Nanofluids on Boiling Heat Transfer Performance

Effect of Nanofluids on Boiling Heat Transfer Performance

Exploration of nanofluid pool boiling and deposition on a horizontal cylinder in Eulerian and Lagrangian frames

Nonlinear Absorption in Plasmonic Titanium Nitride Nanocrystals

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