Nucleate boiling heat transfer: possibilities and limitations of theoretical analysis

Yagov, V. V.

doi:10.1007/s00231-007-0253-8

Cited by 38 publications

(26 citation statements)

References 33 publications

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“…The research performed by Corty and Foust [1] in the mid fifties of the last century is one of a long list of experimental investigations aiming at understanding and evaluating the effects of the surface microstructure. However, despite being exhaustively studied, the relation between active cavities and the surface microstructure is one of the key unsolved issues in the prediction of nucleate boiling heat transfer, as pointed out by Dhir [8] and Yagov [9].…”

Section: Introductionmentioning

confidence: 99%

An Overview of Surface Roughness Effects on Nucleate Boiling Heat Transfer~!2009-10-31~!2010-01-01~!2010-04-16~!

Jabardo¹

2010

TOTPJ

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Abstract:The paper aims at an overview of heating surface microstructure effects on nucleate boiling heat transfer. A comprehensive chronological literature survey is presented followed by an analysis of the results of an experimental investigation. Boiling data of refrigerants R-134a and R-123 on 19 mm diameter copper and brass tubes of average surface roughness varying from 0.07 μm to 10.5 μm have been gathered under the present investigation. Though most of the data confirm previous literature trends, according to which the heat transfer coefficient increases with surface roughness, very rough surfaces present a peculiar behavior with respect to that of the smoother surfaces (Ra<3.0 μm). Heat transfer performance of very rough surfaces is superior to the smoother ones at low heat fluxes (q<20 kW/m 2 ). However, decay in their thermal performance is observed in the high heat fluxes range. An in depth analysis of the effect of roughness on the slope, "m" of the h vs q curves has been performed with a general conclusion being that "m" is affected not only by de pressure but also by the surface roughness. Finally, an analysis of the active cavities density is performed using some models from the literature in order to evaluate the effect of surface roughness in cavity activation. The obtained results are generally inconclusive. However, it has been determined that surface microstructure effects must not be neglected in future models.

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Section: Introductionmentioning

confidence: 99%

An Overview of Surface Roughness Effects on Nucleate Boiling Heat Transfer~!2009-10-31~!2010-01-01~!2010-04-16~!

Jabardo¹

2010

TOTPJ

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“…The literature shows that boiling heat transfer has been a phenomena for many researchers. Researchers have been studying the boiling but the comprehensive treatment of nucleate pool boiling has many limitations Iida and Kobayasi (1970), Fujimoto et al (2010), Yagov (2009). The main limitation of the present study that it only works for optimization of the isolated bubble region nucleate pool boiling heat transfer.…”

Section: Methodsmentioning

confidence: 97%

Optimization of the Pool Boiling Heat Transfer in the Region of the Isolated Bubbles using the ABC Algorithm

Alic¹,

Çermik²,

Tokgöz³

et al. 2019

JAFM

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The region of the isolated bubble regime, in which the bubbling starts, is a very significant process for boiling heat transfer. In this study, Artificial Bee Colony algorithm (ABC), which is mainly based on the searching optimum foods sources for the bees, has been used for the optimization of the pool boiling heat transfer calculation. The ABC algorithm is very handy for numerical analysis. The ABC algorithm has been compared with a genetic algorithm as well as other well-known correlation models for pool boiling heat transfer calculation. The ABC algorithm is found to be useful for any boundary conditions. The boundary conditions have been changed in order to improve the results. Results show that the ABC algorithm works faster than the genetic algorithm for the given problem. The ABC algorithm also predicts less average absolute error when compared with other well-known correlations as well as the optimization using the genetic algorithm.

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“…ITL will develop such data. Also, a very useful information on this subject is available in published papers [15][16][17][18][19][20][21][22]. However, local film boiling processes are investigated not deeply and widely enough.…”

Section: Reports On Research Projectsmentioning

confidence: 99%

Investigation of Batch Intensive Quenching Processes When Using Hydrodynamic Emitters in Quench Tanks

Kobasko¹

2016

EUREKA: Physics and Engineering

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The paper discusses patented in Ukraine a new intensive quenching IQ–2 technology based on film boiling resonance effect [1]. Namely, the paper discusses improving of the batch intensive quenching (IQ) process known as IQ-2 method by the use of hydrodynamic emitters installed in quench tanks. The hydrodynamic emitters produce oscillating waves in the quench media with the frequency of the film boiling process creating a resonance effect. Two- and three-step IQ-2 processes are considered. Specifics of the heat transfer during the IQ-2 process are presented with focusing on the first stage of quenching where film and nucleate boiling processes are taking place. Examples of production IQ-2 equipment and loads processed are also presented. Application of hydrodynamic emitters in the IQ water tanks in addition to currently used propellers is considered in details. It is shown that the proposed new method can fully eliminate the film boiling process resulting in significant reduction of part distortion during quenching. Further evaluation of the proposed method is needed for its implementation in heat treating practice.

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Nucleate boiling heat transfer: possibilities and limitations of theoretical analysis

Cited by 38 publications

References 33 publications

An Overview of Surface Roughness Effects on Nucleate Boiling Heat Transfer~!2009-10-31~!2010-01-01~!2010-04-16~!

An Overview of Surface Roughness Effects on Nucleate Boiling Heat Transfer~!2009-10-31~!2010-01-01~!2010-04-16~!

Optimization of the Pool Boiling Heat Transfer in the Region of the Isolated Bubbles using the ABC Algorithm

Investigation of Batch Intensive Quenching Processes When Using Hydrodynamic Emitters in Quench Tanks

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