Effects of nanoparticle deposition on surface wettability influencing boiling heat transfer in nanofluids

Kim, Sung Joong; Bang, In Cheol; Buongiorno, Jacopo; Hu, Lin

doi:10.1063/1.2360892

Cited by 305 publications

(142 citation statements)

References 16 publications

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“…In this latter case, a variety of methods have been proposed, such as the fabrication of nano-or micro-scale functional structures, [8][9][10][11][12] deposited nanoparticle layers, [13][14][15][16][17][18] atomic layer deposition, [19][20] micro/nano porous coatings [21][22][23][24][25] and hybrid wettability treatments. [26][27][28] Significant progress has been made in the area of CHF enhancement.…”

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confidence: 99%

Pool boiling with high heat flux enabled by a porous artery structure

Bai

Zhang

Lin

et al. 2016

Applied Physics Letters

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A porous artery structure utilizing the concept of “phase separation and modulation” is proposed to enhance the critical heat flux of pool boiling. A series of experiments were conducted on a range of test articles in which multiple rectangular arteries were machined directly into the top surface of a 10.0 mm diameter copper rod. The arteries were then covered by a 2.0 mm thickness microporous copper plate through silver brazing. The pool wall was fabricated from transparent Pyrex glass to allow a visualization study, and water was used as the working fluid. Experimental results confirmed that the porous artery structure provided individual flow paths for the liquid supply and vapor venting, and avoided the detrimental effects of the liquid/vapor counter flow. As a result, a maximum heat flux of 610 W/cm2 over a heating area of 0.78 cm2 was achieved with no indication of dryout, prior to reaching the heater design temperature limit. Following the experimental tests, the mechanisms responsible for the boiling critical heat flux and performance enhancement of the porous artery structure were analyzed.

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confidence: 99%

Pool boiling with high heat flux enabled by a porous artery structure

Bai

Zhang

Lin

et al. 2016

Applied Physics Letters

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“…[3][4][5][6] In order to prove it, some researchers indirectly showed that deposition layer of nanoparticles improved both surface wettability and capillarity. 7,8 A question is rising on that there are no consideration of morphology of buildup of deposition layer by choosing some optimal nanoparticles with, for example, higher thermal conductivity, or better nanoparticle shape to enhance the CHF. Furthermore, the deposition layers should depend on the self-assembly characteristics of the nanomaterials.…”

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confidence: 99%

Effects of nanofluids containing graphene/graphene-oxide nanosheets on critical heat flux

Park

Lee

Kang

et al. 2010

Applied Physics Letters

174

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The superb thermal conduction property of graphene establishes graphene as an excellent material for thermal management. In this paper, we selected graphene/graphene oxide nanosheets as the additives in nanofluids. The authors interestingly found that the highly enhanced critical heat flux (CHF) in the nanofluids containing graphene/graphene-oxide nanosheets (GON) cannot be explained by both the improved surface wettability and the capillarity of the nanoparticles deposition layer. Here we highlights that the GON nanofluid can be exploited to maximize the CHF the most efficiently by building up a characteristically ordered porous surface structure due to its own self-assembly characteristic resulting in a geometrically changed critical instability wavelength.

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“…So, thermo-physical properties of the nanofluid such as thermal conductivity, viscosity, liquid density and specific heat capacity are calculated based on equations described in Section 2.2. Moreover, it is assumed that the nanoparticles do not have an important role in the interparticle forces, consequently, the EOS for nanofluid can be considered equal to that of the pure liquid (Kim et al, 2006;.…”

Section: Dynamic Growth Of a Bubble In A Nanofluidmentioning

confidence: 99%

Numerical investigation of pool nucleate boiling in nanofluid with lattice Boltzmann method

Rostamzadeh

Jafarpur

Rad

2016

jtam

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Due to significant improvement of thermal performance and other properties of nanofluids, this group of liquids is in high demand. According to the literature, the effect of nanoparticles on boiling heat transfer enhancement or degradation is not the same among different investigations. In the present article, the pseudo-potential multiphase lattice Boltzmann method is used to simulate nucleate pool boiling with two different fluids: a pure liquid and a nanofluid. The current results indicate that the contact angle is the same for both the fluid and nanofluid when the vapor bubble detachment occurs. Also, bubble departure diameter is greater in the base liquid while bubble release frequency is higher in the nanofluid. In brief, the present results demonstrate that using a nanofluid instead of its base fluid will increase the boiling heat transfer coefficient.

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Effects of nanoparticle deposition on surface wettability influencing boiling heat transfer in nanofluids

Cited by 305 publications

References 16 publications

Pool boiling with high heat flux enabled by a porous artery structure

Pool boiling with high heat flux enabled by a porous artery structure

Effects of nanofluids containing graphene/graphene-oxide nanosheets on critical heat flux

Numerical investigation of pool nucleate boiling in nanofluid with lattice Boltzmann method

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