A review of heat transfer and pressure drop characteristics of single and two-phase microchannels

Asadi, Masoud; Xie, Gongnan; Sundén, Bengt

doi:10.1016/j.ijheatmasstransfer.2014.07.090

Cited by 188 publications

(62 citation statements)

References 174 publications

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“…Pressure drop pulsation [16], generally speaking when the channel diameter ratio length is more than 150, the channel is easy to produce compressed volume, and shape pressure drop type oscillation. Compared with macro scale, microchannel has relatively large diameter to length ratio, and more prone to shape pressure drop pulsation.…”

Section: Heat Transfer Instabilitymentioning

confidence: 99%

See 1 more Smart Citation

Research Progress of Phase-change Cooling in High-power LED Microchannel

Liu¹,

Zhang²,

Sun³

2018

Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)

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Abstract. In view of high-power LED microchannel phase-change cooling system, scientific problems, such as boiling incipience, flow pattern, heat transfer character, pressure drop and heat transfer instability are summarized. Proposing simultaneous measurement and analysis of phase-change cooling flow pattern, temperature response and synchronous pressure to reveal the mechanism of heat transfer instability, so as to development new method to inhibit heat transfer instability. Thermal siphon principle used for phase-change condensation for microchannel heat transfer is directed against the scientific problems of large consumption of pump power. And establish the optimized matching principle by optimization of property of system working fluid, nano particles, height difference between evaporation entrance and condensation outlet for phase-change condensation heat transfer of high-power LED microchannel.

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Section: Heat Transfer Instabilitymentioning

confidence: 99%

“…Pulsation caused by nucleation and growth of bubbles [16]. At the macroscopic scale, the size of a single bubble is generally smaller than the boiling space scale, and the fluctuation caused by the nucleation and growth of bubbles is not significant.…”

Section: Heat Transfer Instabilitymentioning

confidence: 99%

Research Progress of Phase-change Cooling in High-power LED Microchannel

Liu¹,

Zhang²,

Sun³

2018

Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)

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“…Parallel to the experimental research, theoretical models for boiling in mini-channels have been developed. A series of experimental correlations for predicting local heat transfer coefficient values can be found in References [3][4][5][6]. Nevertheless, considering that the results published in the literature vary substantially and that the correlations proposed do not ensure satisfactory results, more research on flow boiling heat transfer in mini-channels is still required.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Coefficient Identification in Mini-Channel Flow Boiling with the Hybrid Picard–Trefftz Method

et al. 2018

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This paper summarizes the results of the flow boiling heat transfer study with ethanol in a 1.8 mm deep and 2.0 mm wide horizontal, asymmetrically heated, rectangular mini-channel. The test section with the mini-channel was the main part of the experimental stand. One side of the mini-channel was closed with a transparent sight window allowing for the observation of two-phase flow structures with the use of a fast film camera. The other side of the channel was the foil insulated heater. The infrared camera recorded the 2D temperature distribution of the foil. The 2D temperature distributions in the elements of the test section with two-phase flow boiling were determined using (1) the Trefftz method and (2) the hybrid Picard-Trefftz method. These methods solved the triple inverse heat conduction problem in three consecutive elements of the test section, each with different physical properties. The values of the local heat transfer coefficients calculated on the basis of the Robin boundary condition were compared with the coefficients determined with the simplified approach, where the arrangement of elements in the test section was treated as a system of planar layers.

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“…Their results are getting better and better, such as increasing heat transfer rate and reducing heat exchanger size. In relation to the field of microchannel heat transfer, Asadi et al [1] reviewed heat transfer and pressure drop characteristics of single and two-phase microchannels. They found that choosing a reasonable and proper mixture viscosity correlation is crucial to a successful interpretation of the two-phase frictional pressure drop data.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Simulation on Phase Change of Steam in a Microchannel Condenser

Doan¹,

Le²,

Dang³

et al. 2017

IJPER

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Abstract. The heat transfer characteristics of a microchannel condenser in the phase change from the vapor phase to the liquid phase depend on many factors such as the physical parameters of the working fluid, the cooling fluid, etc. In this paper, the numerical results are clearly presented for the condensation profile, the density change, and the temperature of condensed water. Based on the results in this study, a function was suggested for predicting a relationship between the temperature of condensed water and the mass flow rate of steam from 0.01 g/s to 0.1 g/s. Moreover, the results of numerical simulation are in good agreement with the experimental data. In addition, the results showed that the condensation profile is not strongly affected the gravitational force.

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A review of heat transfer and pressure drop characteristics of single and two-phase microchannels

Cited by 188 publications

References 174 publications

Research Progress of Phase-change Cooling in High-power LED Microchannel

Research Progress of Phase-change Cooling in High-power LED Microchannel

Heat Transfer Coefficient Identification in Mini-Channel Flow Boiling with the Hybrid Picard–Trefftz Method

A Numerical Simulation on Phase Change of Steam in a Microchannel Condenser

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