Pool Boiling Experiments on a Nano-Structured Surface

Ahn, H. S.; Sathyamurthi, Vijaykumar; Banerjee, Debjyoti

doi:10.1109/tcapt.2009.2013980

Cited by 71 publications

(11 citation statements)

References 23 publications

(40 reference statements)

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“…Ahn et al . 18 and Sathyamurthi et al . 19 reported experimental results of pool boiling in PF5060 fluid on silicon heaters coated with vertically aligned, multi-walled carbon nanotubes (MWCNTs).…”

Section: Wall Heat Flux Controlled Boiling Heat Transfermentioning

confidence: 96%

Boiling and quenching heat transfer advancement by nanoscale surface modification

Zhao

et al. 2017

Sci Rep

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All power production, refrigeration, and advanced electronic systems depend on efficient heat transfer mechanisms for achieving high power density and best system efficiency. Breakthrough advancement in boiling and quenching phase-change heat transfer processes by nanoscale surface texturing can lead to higher energy transfer efficiencies, substantial energy savings, and global reduction in greenhouse gas emissions. This paper reports breakthrough advancements on both fronts of boiling and quenching. The critical heat flux (CHF) in boiling and the Leidenfrost point temperature (LPT) in quenching are the bottlenecks to the heat transfer advancements. As compared to a conventional aluminum surface, the current research reports a substantial enhancement of the CHF by 112% and an increase of the LPT by 40 K using an aluminum surface with anodized aluminum oxide (AAO) nanoporous texture finish. These heat transfer enhancements imply that the power density would increase by more than 100% and the quenching efficiency would be raised by 33%. A theory that links the nucleation potential of the surface to heat transfer rates has been developed and it successfully explains the current finding by revealing that the heat transfer modification and enhancement are mainly attributed to the superhydrophilic surface property and excessive nanoscale nucleation sites created by the nanoporous surface.

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Section: Wall Heat Flux Controlled Boiling Heat Transfermentioning

confidence: 96%

Boiling and quenching heat transfer advancement by nanoscale surface modification

Zhao

et al. 2017

Sci Rep

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“…Density and length of CNT's are important parameters for its performance in nucleate boiling. Ahn et al [191,192] used CVD technique to coat CNTs on the silicon surface. They coated two different heights of 25 µm (Type A) and 9 µm (Type B).…”

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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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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“…They also measured pool boiling of PF5060 and DI water on 3D micro-structured (staggered cross-meshing) surfaces, and obtained the maximum (not critical) heat fluxes of 27 and 130 W/cm 2 , respectively. Ahn et al (2009) and Sathyamurthi et al ( 2009) reported experimental results of pool boiling in the PF5060 fluid on silicon heaters coated with vertically aligned, multi-walled carbon nanotubes (MWCNTs). Using NWCNTs of layer thicknesses of 9 μm (Type A) and 25 μm (Type B), they found that the critical heat flux was increased by 62% and 58%, respectively.…”

Section: Nano-structured Surfacesmentioning

confidence: 99%

A Review of Recent Progress on Nano/Micro Scale Nucleate Boiling Fundamentals

Chung¹,

Chen²,

Maroo³

2011

Frontiers in Heat and Mass Transfer

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Recent research progress in the area of nano/micro scale nucleate boiling is reviewed and an up-to-date summary is provided with a focus on the advances of fundamental boiling physics. This review examines nano/micro scale pool boiling experimental and theoretical/numerical work reported in the open literature. On the experimental side, the topics covered are moving contact line, critical heat flux, boiling curve, nucleation, single bubble boiling cycle, bubble coalescence boiling cycle, heater size effect, nanofluid, and nanoscale-structured heater surface. For the theoretical/numerical work, continuum mechanics modeling of the micro-region and molecular dynamics modeling of the nano-region are included.

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Pool Boiling Experiments on a Nano-Structured Surface

Cited by 71 publications

References 23 publications

Boiling and quenching heat transfer advancement by nanoscale surface modification

Boiling and quenching heat transfer advancement by nanoscale surface modification

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

A Review of Recent Progress on Nano/Micro Scale Nucleate Boiling Fundamentals

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