Influence of carbon nanotubes on deionized water pool boiling performances

Bertossi, Rémi; Caney, Nadia; Gruss, Jean-Antoine; Dijon, Jean; Fournier, A.; Marty, Philippe

doi:10.1016/j.expthermflusci.2014.10.028

Cited by 33 publications

(4 citation statements)

References 12 publications

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“…While in film boiling regime Type-A CNTs showed 57% higher heat flux and Type B showed no change as compared to the untreated surface. Another similar study was conducted by Bertossi et al [188] for 3 µm to the 10 µm length of CNTs. Nucleation points were observed to generate on the top of CNTs due to their hydrophobic nature.…”

Section: Carbon Based Nanoparticles Coatingsmentioning

confidence: 63%

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Micro-Nano Scale Surface Coating for Nucleate Boiling Heat Transfer: A Critical Review

2018

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Nucleate boiling is a phase change heat transfer process with a wide range of applications i.e., steam power plants, thermal desalination, heat pipes, domestic heating and cooling, refrigeration and air-conditioning, electronic cooling, cooling of turbo-machinery, waste heat recovery and much more. Due to its quite broad range of applications, any improvement in this area leads to significant economic, environmental and energy efficiency outcomes. This paper presents a comprehensive review and critical analysis on the recent developments in the area of micro-nano scale coating technologies, materials, and their applications for modification of surface geometry and chemistry, which play an important role in the enhancement of nucleate boiling heat transfer. In many industrial applications boiling is a surface phenomenon, which depends upon its variables such as surface area, thermal conductivity, wettability, porosity, and roughness. Compared to subtractive methods, the surface coating is more versatile in material selection, simple, quick, robust in implementation and is quite functional to apply to already installed systems. The present status of these techniques for boiling heat transfer enhancement, along with their future challenges, enhancement potentials, limitations, and their possible industrial implementation are also discussed in this paper.

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Section: Carbon Based Nanoparticles Coatingsmentioning

confidence: 63%

“…In the case of CNT on a metal substrate, CNTs acts as hydrophobic dots to increase nucleation points. Bubbles appear to generate on top of these CNT coatings, while the untreated flat metal surface in their surrounding act as a hydrophilic region and helps in delaying film formation [188].…”

Section: Carbon Based Nanoparticles Coatingsmentioning

confidence: 99%

Micro-Nano Scale Surface Coating for Nucleate Boiling Heat Transfer: A Critical Review

2018

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“…20,21 In high-surface-tension liquids such as water, densification of CNT forests occurs due to elastocapillary effects. 22,23 Here we propose and demonstrate the use of ceramic-coated CNT forest microstructures as a scalable, stable, high CHF boiling surface. The conformal ceramic coating on the CNTs prevents CNT densification or detachment from the substrate.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Such applications include thermal interfacial materials (TIMs), , heaters, thermal energy storage materials, additives in nanofluids, , and phase change heat transfer devices. , CNTs are particularly attractive for engineering of phase change heat transfer due to their high surface-to-volume ratio and nanoscale geometry, which give large surface areas compared to planar or solid microstructured surfaces and provide high capillary pressures. In boiling applications, thin coatings of randomly oriented CNTs have been used on other structures to enhance surface wettability. , CNT forestsaligned films of CNTs oriented perpendicular to the substratehave been utilized in stable boiling only with refrigerants as the working liquids. , In high-surface-tension liquids such as water, densification of CNT forests occurs due to elastocapillary effects. , …”

Section: Introductionmentioning

confidence: 99%

Microstructured Ceramic-Coated Carbon Nanotube Surfaces for High Heat Flux Pool Boiling

Zhao

Dash

Dhillon

et al. 2019

ACS Appl. Nano Mater.

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Stable surfaces with high boiling heat flux are critical to many thermal and energy conversion systems, and it is well-known that the microscale texture and wettability of a surface influences its critical heat flux (CHF). We investigate pool boiling on microstructured ceramic-coated carbon nanotube (CNT) surfaces. CNT microstructures are patterned with precise dimensions over large areas, and a ceramic coating by atomic layer deposition (ALD) imparts stability in the presence of capillary forces and thermal stresses that occur during boiling, achieving a measured CHF as high as 245 W cm −2. We also show that the nanoporosity of the ceramic−CNT microstructures has a negligible influence on the CHF because surface rewetting is dominated by microscale imbibition. The high CHF values achieved on our surfaces are attributed to the micropatterning and the nanoscale surface texture of the CNTs, which accelerate liquid imbibition upon bubble departure. Our findings also suggest further enhancements in CHF can be made by optimizing the microstructure pattern and improving its wettability. Therefore, micropatterned ceramic−CNT composites are a potentially attractive substrate for industrial applications of pool boiling.

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Pool Boiling Heat Transfer Enhancement Using Nanoparticle Coating on Copper Substrate

Singh

Sharma

2022

Handbook of Green and Sustainable Nanotechnology

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Influence of carbon nanotubes on deionized water pool boiling performances

Cited by 33 publications

References 12 publications

Micro-Nano Scale Surface Coating for Nucleate Boiling Heat Transfer: A Critical Review

Micro-Nano Scale Surface Coating for Nucleate Boiling Heat Transfer: A Critical Review

Microstructured Ceramic-Coated Carbon Nanotube Surfaces for High Heat Flux Pool Boiling

Pool Boiling Heat Transfer Enhancement Using Nanoparticle Coating on Copper Substrate

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