Review of pool boiling enhancement by surface modification

Liang, Gangtao; Mudawar, Issam

doi:10.1016/j.ijheatmasstransfer.2018.09.026

Cited by 453 publications

(114 citation statements)

References 438 publications

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“…For example, the cavities on the surface originate bubbles and entrap them inside [62][63][64][65][66]. Similar studies also substantiated that surface roughness and cavities increase the number of nucleation points during NBHT [67,68].…”

Section: Surface Coatings For Boiling Heat Transfer Enhancementmentioning

confidence: 74%

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: Surface Coatings For Boiling Heat Transfer Enhancementmentioning

confidence: 74%

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

2018

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“…Kamel et al [25] Pool and flow boiling/CHF Their review shows how the nanofluids could play an important role in achieving high heat flux with small temperature differences during the boiling process, which, in turn, modify the critical heat flux Liang and Mudawar [26] Pool boiling/HTC, CHF and incipient boiling hysteresis Their review article reported that the mechanism of boiling heat transfer and two-phase flow using nanofluids is a complicated phenomenon and it is not fully understood due to the contradictories results in the literature. Enhancement in CHF was reported from collected studies, and this improvement could reach over 50%…”

Section: Recent Review Papers Related To the Boiling Of Nanofluidsmentioning

confidence: 99%

“…Liang and Mudawar [26] presented studies that published in the literature for pool boiling improvement due to modifying the working fluids properties via adding surfactants, polymers and nanoparticles during nucleate boiling regime for both the HTC and CHF. They have shown that the nanofluids have undeniable upgrading impact on enhancement of CHF and this due to the improvement of surface characteristics which, in turn, enhancing the wettability of the fluid, on another hand, the concept of HTC is still conflicting and not clearly understood due to the inconsistencies concerning the impact of nanofluids during nucleate boiling regime and there are interlinked parameter that may affect such as operating parameters, surface roughness nature and nanoparticles morphology.…”

Section: Recent Review Papers Related To the Boiling Of Nanofluidsmentioning

confidence: 99%

Experimental studies of flow boiling heat transfer by using nanofluids

Kamel

Lezsovits

Hussein

2019

J Therm Anal Calorim

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Flow boiling heat transfer widely utilized in numerous industrial applications such as boiler tubes, evaporators and cooling of reactors in a nuclear power plant. Nanofluids are a new category of thermal fluids, made by dispersing a nanometer solid particle which is usually less than 100 nm into conventional liquids such as water, oil engine and ethylene glycol with the intent to enhance the thermal properties of the base fluids. This work reviews the recent experimental studies focusing on the flow boiling heat transfer using nanofluids. The latest results associated with this subject are presented and outlined to account the influence of several parameters, which are related to operating conditions and nanoparticles morphology on the heat transfer coefficient and the critical heat flux. Besides, the effects of nanoparticles on other related sub-phenomenon of the flow boiling by using nanofluids were discussed. Moreover, the latest review papers of the related topic were presented and briefly discussed. Finally, suggestions for future research activities related to this field were also concisely listed.

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“…In the conventional pool-boiling, the heat is applied to liquid bulk. During the process, bubbles are formed in bulk, before busting to the liquid surface (Mori and Utaka, 2017; Liang and Mudawar, 2019). Recently, surface evaporation, i.e., without bubble formation in bulk, has been examined.…”

Section: Introductionmentioning

confidence: 99%

Selective evaporation of a butanol/water droplet by microwave irradiation, a step toward economizing biobutanol production

et al. 2020

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Selective evaporation of a butanol/water droplet by microwave irradiation, a strategy to economize biobutanol production.Journal homepage: www.biofueljournal.com HIGHLIGHTS ➢Surface and evaporation of alcohol/water was studied in-situ in response to microwave irradiation. ➢Butanol content in liquid phase was reduced by approx. 90%. ➢Similar trend was observed with pentanol/water droplet. ➢The method could be applied to improve efficiency of fermentative butanol separation. GRAPHICAL ABSTRACT ARTICLE INFO ABSTRACT Article history:The separation step is a constraint in biobutanol production, due to high energy consumption of the current techniques. This study explores a new separation method via applying microwave irradiation. Butanol/water droplet was monitored during exposure to microwave irradiation at different power rates. The surface tension, droplet volume, and temperature were scrutinized during and after exposure to microwave irradiation. The data obtained indicated that the microwave-induced evaporation rates of alcohols were much higher than that of water. Consequently, the vaporized phase contained a much higher alcohol content than the liquid phase. In particular, butanol concentration in the aqueous phase could be reduced to ~ 0.1 wt.%, which was more effective than the theoretical limit via the boiling process. The method is an attractive option to complement the fermentation process, which produces a low butanol concentration solution. This development could potentially lead to a more efficient pathway for biobutanol production. Selective evaporation of a butanol/water droplet by microwave irradiation, a strategy to economize biobutanol production.

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Review of pool boiling enhancement by surface modification

Cited by 453 publications

References 438 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

Experimental studies of flow boiling heat transfer by using nanofluids

Selective evaporation of a butanol/water droplet by microwave irradiation, a step toward economizing biobutanol production

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