Fundamental Issues of Critical Heat Flux Phenomena During Flow Boiling in Microscale-Channels and Nucleate Pool Boiling in Confined Spaces

Cheng, Lixin

doi:10.1080/01457632.2013.763538

Cited by 52 publications

(26 citation statements)

References 106 publications

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“…Then, the fin efficiency can be evaluated with Eqs. (6) and (7), correcting the first attempt value, until it converges with a variance inferior to 0.001.…”

Section: Data Reductionmentioning

confidence: 99%

“…By exploiting a two-phase cooling mechanism, this condition is already well-known in scientific literature and it is often referred as critical heat flux (CHF) or dryout [6,7], due to the intermittent or complete dry-out of the liquid phase attached to the heated surface, exposing the latter to the vapor and its limited heat dissipation capability.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Critical heat flux: Performance of R1234yf, R1234ze and R134a in an aluminum multi-minichannel heat sink at high saturation temperatures

Mastrullo

Mauro

Thome

et al. 2016

International Journal of Thermal Sciences

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“…Then, the fin efficiency can be evaluated with Eqs. (6) and (7), correcting the first attempt value, until it converges with a variance inferior to 0.001.…”

Section: Data Reductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Critical heat flux: Performance of R1234yf, R1234ze and R134a in an aluminum multi-minichannel heat sink at high saturation temperatures

Mastrullo

Mauro

Thome

et al. 2016

International Journal of Thermal Sciences

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“…According to the recent review on CHF in mini/microchannels conducted by Roday and Jensen [33], experimental CHF results are inconsistent with existing models. For instance, there are disagreements with the influence of inlet subcooling degree, pressure, exit quality, and diameter on CHF in existing models [30,34,35]. Additionally, only a few theoretical CHF models are available for flow boiling in microchannels, for example, a theoretical CHF model based on interfacial waves [3,36], or local liquid thin film dryout [37].…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical studies of critical heat flux of flow boiling in microchannels with microbubble-excited high-frequency two-phase oscillations

Yang

Alam

et al. 2015

International Journal of Heat and Mass Transfer

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“…As a result of the enhanced thermal performance compared to other processes, better axial temperature uniformity, reduced coolant flow rates, and thus smaller pumping powers are obtained in flow boiling and two phase flow cooling technology. However, flow boiling heat transfer characteristics and mechanisms in microchannels are quite different from those in conventional channels [2][3][4][5][6][7]. The channel confinement has a significant on the flow boiling heat transfer characteristics and mechanisms.…”

Section: Introductionmentioning

confidence: 99%

“…Flow boiling in microchannels has become one of the "hottest" research topics in heat transfer as a highly efficient cooling technology for the past decades [1][2][3][4][5]. It has numerous advantages of high heat transfer performance, chip temperature uniformity, hot spots cooling capability, and more.…”

Section: Introductionmentioning

confidence: 99%

On the Phenomenal Mechanisms and Prediction Methods of Flow Boiling Heat Transfer in Microchannels

Cheng¹

2017

World Congress on Momentum, Heat and Mass Transfer

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-This keynote paper presents a comprehensive analysis of phenomenal mechanisms and the available correlations and models of flow boiling heat transfer in micro-channels. First, studies on flow boiling heat transfer behaviours and mechanisms in microchannels are presented. Then, the available correlations and models of flow boiling heat transfer in micro-channels are reviewed and analysed. Comparisons of 12 correlations with a database covering a wide range of test parameters and 8 fluids are presented. It shows that all correlations poorly agree to the database. Furthermore, comparisons of the mechanistic flow boiling heat transfer models based on flow patterns including the Thome at al. three-zone heat transfer model for evaporation in microchannel and the flow pattern based model combining the Thome et al. three zone heat transfer models with the Cioncolini-Thome annular flow model for both macro-and microchannel to the database are presented. It shows that the flow pattern based model combining the three zone model with the annular flow model gives better prediction than the three zone heat transfer model alone. The flow pattern based heat transfer model favourably agrees with the experimental database. According to the comparison and analysis, suggestions have been given for improving the prediction methods in the future. Furthermore, flow patterned based phenomenological models and their applications to micro channels are discussed. According to this comprehensive review and analysis of the current research on the flow boiling heat transfer mechanisms and prediction methods in micro-channels, the future research needs have been identified and recommended. In general, systematic and accurate experimental data of flow boiling heat transfer in micro-channels are still needed although a large amount of work has been done over the past decades. The channel size effect on the flow boiling behaviours should be systematically investigated. Heat transfer mechanisms in micro-channels should be further understood and related to the corresponding flow patterns. Furthermore, effort should be made to develop and improve generalised mechanistic prediction methods and theoretical models for flow boiling heat transfer in micro-channels according to the physical phenomena/mechanisms and the corresponding flow structures. The effects of the channel size and a wide range of test conditions and fluid types should be considered in developing new prediction methods.

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Fundamental Issues of Critical Heat Flux Phenomena During Flow Boiling in Microscale-Channels and Nucleate Pool Boiling in Confined Spaces

Cited by 52 publications

References 106 publications

Critical heat flux: Performance of R1234yf, R1234ze and R134a in an aluminum multi-minichannel heat sink at high saturation temperatures

Critical heat flux: Performance of R1234yf, R1234ze and R134a in an aluminum multi-minichannel heat sink at high saturation temperatures

Experimental and theoretical studies of critical heat flux of flow boiling in microchannels with microbubble-excited high-frequency two-phase oscillations

On the Phenomenal Mechanisms and Prediction Methods of Flow Boiling Heat Transfer in Microchannels

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