Overview of micro-channel design for high heat flux application

Naqiuddin, Nor Haziq; Saw, Lip Huat; Yew, Ming Chian; Yusof, Farazila; Ng, Tan Ching; Yew, Ming Kun

doi:10.1016/j.rser.2017.09.110

Cited by 252 publications

(49 citation statements)

References 104 publications

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“…Because the management of energy in a small-scale confined space is very important for reactor design [51,87], the effect of the thermal coupling within the reaction system is investigated. Figure 5a shows the temperature and conversion profiles along the axial direction (i.e., along the length of the reactor).…”

Section: Heat Exchange Characteristicsmentioning

confidence: 99%

RETRACTED: Production of Hydrogen by Methane Steam Reforming Coupled with Catalytic Combustion in Integrated Microchannel Reactors

et al. 2018

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This paper addresses the issues related to the rapid production of hydrogen from methane steam reforming by means of process intensification. Methane steam reforming coupled with catalytic combustion in thermally integrated microchannel reactors for the production of hydrogen was investigated numerically. The effect of the catalyst, flow arrangement, and reactor dimension was assessed to optimize the design of the system. The thermal interaction between reforming and combustion was investigated for the purpose of the rapid production of hydrogen. The importance of thermal management was discussed in detail, and a theoretical analysis was made on the transport phenomena during each of the reforming and combustion processes. The results indicated that the design of a thermally integrated system operated at millisecond contact times is feasible. The design benefits from the miniaturization of the reactors, but the improvement in catalyst performance is also required to ensure the rapid production of hydrogen, especially for the reforming process. The efficiency of heat exchange can be greatly improved by decreasing the gap distance. The flow rates should be well designed on both sides of the reactor to meet the requirements of both materials and combustion stability. The flow arrangement plays a vital role in the operation of the thermally integrated reactor, and the design in a parallel-flow heat exchanger is preferred to optimize the distribution of energy in the system. The catalyst loading is an important design parameter to optimize reactor performance and must be carefully designed. Finally, engineering maps were constructed to design thermally integrated devices with desired power, and operating windows were also determined.

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Section: Heat Exchange Characteristicsmentioning

confidence: 99%

RETRACTED: Production of Hydrogen by Methane Steam Reforming Coupled with Catalytic Combustion in Integrated Microchannel Reactors

et al. 2018

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“…Naqiuddin et al [33] reviewed the different geometric design of mini/microchannels which were derived from numerical simulation and experimental works. Sidik et al [34] and Dewan and Srivastava [35] comprehensively discussed the passive techniques for heat transfer augmentation in mini/microchannels.…”

Section: 2 Mini/microchannel Heat Sinkmentioning

confidence: 99%

A review on heat transfer and hydrodynamic characteristics of nano/microencapsulated phase change slurry (N/MPCS) in mini/microchannel heat sinks

Chai

Shaukat

Wang

et al. 2018

Applied Thermal Engineering

124

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Mini/microchannel heat sinks are currently widely used in a variety of thermal and energy applications with the advantages of compactness, light weight and higher heat transfer performance. In order to further improve the performance of such heat sink, many recent studies have introduced the nano/microencapsulated phase change slurry (N/MPCS) as the working fluid due to their high storage capacity during phase change. This paper concerns the channel with hydraulic diameter from 10 μm to 3 mm, covering the range of microchannel and minichannel. Firstly, the existed review works relate to mini/microchannel heat sinks are summarized, with topics covering manufacturing processes and geometric designs, thermal and hydrodynamic performance with different working fluids, and their typical and potential applications. Then, the N/MPCS used in mini/microchannels from experimental and numerical simulation works are discussed, with focuses placed on the base fluid, core and shell materials, and thermophysical properties of slurry. Next, the local, average and overall heat transfer and hydrodynamic characteristics of mini/microchannel heat sinks with N/MPCS flowing inside are reviewed and analyzed, considering different flow conditions, material and dimension of test section, and composition and fraction of such slurry. Finally, the proposed heat transfer and pressure drop correlations in this research field are evaluated. The purpose of this review

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“…Therefore, thermal management technology using micro-channel heat sinks has gained a great extent of popularity due to its superior heat removal capabilities through small-scale surface area in comparison to the conventional heat sink [3]. In view of this, the use of micro-channel heat sink can be found in a wide range of applications, such as military and defence, bio-engineering, medical, nuclear industry, solar cell, fuel cell and electronic devices [4].…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation for optimizing segmented micro-channel heat sink by Taguchi-Grey method

Naqiuddin¹,

Saw²,

Yew³

et al. 2018

Applied Energy

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Overview of micro-channel design for high heat flux application

Cited by 252 publications

References 104 publications

RETRACTED: Production of Hydrogen by Methane Steam Reforming Coupled with Catalytic Combustion in Integrated Microchannel Reactors

RETRACTED: Production of Hydrogen by Methane Steam Reforming Coupled with Catalytic Combustion in Integrated Microchannel Reactors

A review on heat transfer and hydrodynamic characteristics of nano/microencapsulated phase change slurry (N/MPCS) in mini/microchannel heat sinks

Numerical investigation for optimizing segmented micro-channel heat sink by Taguchi-Grey method

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