Flow pattern and heat transfer characteristics of R-134a refrigerant during flow boiling in a horizontal circular mini-channel

Saisorn, Sira; Kaew-On, Jatuporn; Wongwises, Somchai

doi:10.1016/j.ijheatmasstransfer.2010.05.022

Cited by 61 publications

(20 citation statements)

References 39 publications

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“…During the transition from the bubble-slug flow into the slug flow pattern, a considerable drop in the heat transfer coefficient is observed. In the majority of publications analyzed here, the flow boiling heat transfer coefficient decreases with the increase in vapor quality [25], however the authors of [1] do not confirm this finding. Thome et al [26] did not manage to determine ultimately how the subcooling of the boiling liquid to the saturation temperature at the minichannel inlet affects the heat transfer coefficient.…”

Section: Resultscontrasting

confidence: 55%

“…It was found that the local heat transfer coefficient increased along with the increasing mass flux at the same values of heat flux and constant pressure due to the increased Reynolds number. In [1] the boiling heat transfer coefficient was found to be independent of mass flux. The results of one study, [22], reported the coefficient rise with the mass flux increase.…”

Section: Resultsmentioning

confidence: 96%

“…The results of the experiments confirm the nature of the investigated phenomenon qualitatively, but they vary from the theoretical values quantitatively. The review of publications [1,22] shows that at the boiling incipience, the flow boiling heat transfer coefficient increases with the increase in the heat flux. Only in one study, [23], the heat flux had a negligible effect on the coefficient value.…”

Section: Resultsmentioning

confidence: 99%

“…The way the flow structures are shaped depends on pressure, mass flux, hydraulic diameter, and the channel spatial orientation (vertical and horizontal). Therefore the flows are analyzed separately for horizontal channels [1,2] and vertical channels [3,4]. There are significant differences between the mechanisms of vapor bubble nucleation despite apparent similarities.…”

Section: Introductionmentioning

confidence: 99%

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Measurements of two-phase flow patterns and local void fraction in vertical rectangular minichannel

Kaniowski¹,

Poniewski²

2013

Archives of Thermodynamics

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Technology advancements entail a necessity to remove huge amounts of heat produced by today's electronic devices based on highly integrated circuits, major generators of heat. Heat transfer to boiling liquid flowing through narrow minichannels is a modern solution to the problem of heat transfer enhancement. The study was conducted for FC-72 boiling in a rectangular, vertical and asymmetrically heated minichannel that had depths of 0.5-1.

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Section: Resultscontrasting

confidence: 55%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Measurements of two-phase flow patterns and local void fraction in vertical rectangular minichannel

Kaniowski¹,

Poniewski²

2013

Archives of Thermodynamics

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“…The experimental investigation for R-134a refrigerant during flow boiling in a tube having a diameter of 1.75 mm was performed by Saisorn et al (2010). They reported that the lower liquid viscosity due to the increment of saturation pressure lead to the decrease in frictional pressure drop.…”

Section: Two-phas E Press Ure Dropmentioning

confidence: 99%

A Critical Review of Recent Investigations on Two-Phase Pressure Drop in Flow Boiling Micro-Channels

Saisorn¹

2012

Frontiers in Heat and Mass Transfer

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Two-Phase Flow and Heat Transfer in Micro-Channels and Their Applications in Micro-System Cooling

Wang

Sefiane

Harmand

et al. 2011

Advanced Structured Materials

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Heat management in high thermal-density systems is confronting rising challenges due to the extremely high heat dissipation capacity requirement in ever more miniaturized and intensified processes. Efforts have been made for heat transfer enhancement. A number of heat transfer technologies including natural convention and radiation, forced convection, pool boiling, micro-channel flow boiling, heat pipes and capillary pumps were introduced. However, the drastically increasing heat transfer requirements are still calling for extensive experimental investigations, especially on the phase change processes in micro-scale. A review of the experimental studies on two-phase flow boiling and heat transfer in small flow passages was presented. Some experimental results published in the year 1993-2010 were overviewed, revealing some controversial conclusions on microscale flow boiling heat transfer mechanisms. Besides, several existing heat transfer correlations were assessed. It should be admitted that the existing database is still limited, especially for flow boiling in passages with unique geometries such as high-aspect-ratio cross section.

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Flow pattern and heat transfer characteristics of R-134a refrigerant during flow boiling in a horizontal circular mini-channel

Cited by 61 publications

References 39 publications

Measurements of two-phase flow patterns and local void fraction in vertical rectangular minichannel

Measurements of two-phase flow patterns and local void fraction in vertical rectangular minichannel

A Critical Review of Recent Investigations on Two-Phase Pressure Drop in Flow Boiling Micro-Channels

Two-Phase Flow and Heat Transfer in Micro-Channels and Their Applications in Micro-System Cooling

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