Experimental study of nucleate pool boiling heat transfer of water by surface functionalization with SiO 2 nanostructure

Das, Sudev; Saha, Biswajit; Bhaumik, Swapan

doi:10.1016/j.expthermflusci.2016.09.009

Cited by 76 publications

(19 citation statements)

References 36 publications

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“…Based on the hydrodynamic instability model, recent studies regarding the effects of the heating surface characteristics made some modifications considering the surface wettability [10][11][12][13][14][15], contact angle [16][17][18], and capillary wicking [1λ-20]. In order to study these parameters, some optimization measures were presented, such as using surface coating [21][22][23][24][25][26][27][28] to change the surface wettability and contact angle, adopting porous structures [2λ-33] to enhance the capillary force and utilizing nano/micro grooved surfaces [34][35][36][37][38][39][40][41][42][43][44][45] to change the morphology of the heated surface.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on pool boiling in a porous artery structure

Zhang

Bai

Lin

et al. 2019

Applied Thermal Engineering

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In this work, a porous artery structure is proposed to enhance the critical heat flux (CHF) of pool boiling based on the concept of "phase separation and modulation", and extensive experimental studies have been carried out for validation. In the experiment, multiple rectangular arteries were machined directly into the top surface of a copper rod to provide individual flow paths for vapor escaping. The arteries were covered by a microporous copper plate where capillary forces can be developed at the liquid/vapor interface to prevent the vapor from penetrating the porous structure and realize strong liquid suction simultaneously. The pool wall was made of transparent quartz glass to enable a visualization study where the liquid/vapor distribution and movement can be observed directly. Favorable results have been reached as expected, and a maximum heat flux up to 805 W/cm 2 was achieved with no indication of any dry-out, which successfully validated this new concept. In addition, the effects of the diameter and thickness of the porous copper plate, and the connection method between the porous copper plate and copper fin on the pool boiling heat transfer in the porous artery structure were investigated, and the inherent physical mechanisms were analyzed and discussed.

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Section: Introductionmentioning

confidence: 99%

Experimental study on pool boiling in a porous artery structure

Zhang

Bai

Lin

et al. 2019

Applied Thermal Engineering

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“…Various techniques of micro and nanoscale surface modification have been used, including nanotubes, [ 5,6 ] micro/nanoporous coatings, [ 7–9 ] micro‐fin/micro‐pillar surfaces, [ 10,11 ] and nanowires. [ 12,13 ] Oxide materials are of much interest for improving phase‐change heat transfer using micro/nanostructure surface due to their high stability.…”

Section: Introductionmentioning

confidence: 99%

Plasma deposition of a stable SiO_x‐like layer on copper surface for enhanced pool boiling heat transfer performance: A combination of microstructures and wetting properties

Mohammadi

Taghvaei

Rabiee

2021

Plasma Processes & Polymers

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In this study, a thin film composed of inorganic SiOx is deposited on the copper surface by atmospheric pressure plasma‐enhanced chemical vapor deposition. A pool boiling experiment is performed and the influence of the coating on pool boiling performance is examined. Morphology, composition, and wettability of the thin films are assessed using a scanning electron microscope, energy‐dispersive X‐ray spectrometer, and contact angle measurements. In addition to the enhancement of pool boiling thermal characteristics, especially a 103% increase in heat transfer coefficient, it is observed that the plasma‐deposited thin film on the copper surface is stable after the four boiling/cooling cycles. Finally, the underlying mechanism behind the improvements achieved by use of coated surface is studied.

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“…The lower surface tension induced smaller bubbles, and thus nucleation was more affected by the nano textures. Das et al [13] Nomenclature A heat surface area, (m 2 ) A mct surface area of a micro-capillary tube, (m 2 ) A wet apparent wetted surface area, (m 2 ) CHF critical heat flux, (W/cm 2 ) C pl specific heat of liquid, (J [15] produced carbon nanotube coatings on copper surfaces by a hot filament chemical vapor deposition, and experimentally studied pool boiling of DI water, obtaining an enhancement of 38% and 80% in the CHF and the HTC, respectively. The increased effective surface area was considered as the mechanism of the enhancement.…”

Section: Introductionmentioning

confidence: 99%

Pool Boiling of NOVEC-649 on Microparticle-Coated and Nanoparticle-Coated Surfaces

Cao

Sundén

2020

Heat Transfer Engineering

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In this study, microparticle coatings and nanoparticle coatings were fabricated on copper surfaces by an electrochemical deposition method and an electrophoretic deposition method, respectively. Pool boiling of NOVEC-649 was experimentally studied on the coated surfaces, concerning heat transfer, bubble dynamics, and critical heat fluxes. Compared with a smooth surface, heat transfer coefficients and critical heat flux (CHF) were improved, achieving a maximum heat transfer enhancement of 460% on the nanoparticle-coated surface and a maximum CHF enhancement of 60% on the microparticle-coated surface. Based on high speed visualizations, bubble departure diameters were measured and compared with several correlations, and then the heat transfer was analyzed by a mechanistic model, considering natural convection, transient heat conduction and microlayer evaporation. The mechanistic model demonstrated a good ability to predict the present results. In addition, wickability, representing a liquid supplement ability, was measured, indicating that the wickability enhancement was probably responsible for the CHF improvement.

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Experimental study of nucleate pool boiling heat transfer of water by surface functionalization with SiO 2 nanostructure

Cited by 76 publications

References 36 publications

Experimental study on pool boiling in a porous artery structure

Experimental study on pool boiling in a porous artery structure

Plasma deposition of a stable SiO_x‐like layer on copper surface for enhanced pool boiling heat transfer performance: A combination of microstructures and wetting properties

Pool Boiling of NOVEC-649 on Microparticle-Coated and Nanoparticle-Coated Surfaces

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Experimental study of nucleate pool boiling heat transfer of water by surface functionalization with SiO 2 nanostructure

Cited by 76 publications

References 36 publications

Experimental study on pool boiling in a porous artery structure

Experimental study on pool boiling in a porous artery structure

Plasma deposition of a stable SiOx‐like layer on copper surface for enhanced pool boiling heat transfer performance: A combination of microstructures and wetting properties

Pool Boiling of NOVEC-649 on Microparticle-Coated and Nanoparticle-Coated Surfaces

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Plasma deposition of a stable SiO_x‐like layer on copper surface for enhanced pool boiling heat transfer performance: A combination of microstructures and wetting properties