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On further enhancement of single-phase and flow boiling heat transfer in micro/minichannels

Wu, Zan LU and Sundén, Bengt LU (2014) In Renewable & Sustainable Energy Reviews 40. p.11-27
Abstract
With fast growing power consumption and device miniaturization, micro/minichannels are superior to macrochannels or conventional channels for high heat-flux dissipation due to their large surface area to volume ratios and high heat transfer coefficients. However, the associated large pressure drop penalty and flow boiling instability of micro/minichannels hinder their advancement in many practical applications. Therefore, enhancement techniques are required to stabilize the flow and further augment the heat transfer performance in micro/minichannels. This work first presents the classification of micro/minichannels for single-phase flow and flow boiling and gives a general statement of heat transfer enhancement. Then a state-of-the-art... (More)
With fast growing power consumption and device miniaturization, micro/minichannels are superior to macrochannels or conventional channels for high heat-flux dissipation due to their large surface area to volume ratios and high heat transfer coefficients. However, the associated large pressure drop penalty and flow boiling instability of micro/minichannels hinder their advancement in many practical applications. Therefore, enhancement techniques are required to stabilize the flow and further augment the heat transfer performance in micro/minichannels. This work first presents the classification of micro/minichannels for single-phase flow and flow boiling and gives a general statement of heat transfer enhancement. Then a state-of-the-art overview of the most recent enhancement techniques is specifically provided for further sing-phase flow and flow boiling enhancement in micro/minichannels. Two promising enhancement techniques, i.e., interrupted microfins and engineered fluids with additives are discussed for single-phase flow. For flow boiling, the focus is given on several selected enhancement approaches which can effectively mitigate flow boiling instability and another hot research topic, i.e., nanoscale surface modification. Besides, effects of wettability on bubble dynamics are presented, and a concept of flow-pattern based heat transfer enhancement is proposed. For both single-phase flow and flow boiling enhancement, a special emphasis is on those enhancement techniques with high thermal performance and relatively low pressure drop penalty. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Microchannel, Heat transfer enhancement, Pressure drop, Bubble dynamics, Surface modification, Nanofluid, Nanoscale coating
in
Renewable & Sustainable Energy Reviews
volume
40
pages
11 - 27
publisher
Elsevier
external identifiers
  • wos:000345473600002
  • scopus:84905853488
ISSN
1364-0321
DOI
10.1016/j.rser.2014.07.171
language
English
LU publication?
yes
id
d00d0391-ba8d-4984-8336-a6c93df7c141 (old id 4646138)
alternative location
http://www.sciencedirect.com/science/article/pii/S1364032114006236
date added to LUP
2014-09-15 10:19:15
date last changed
2017-09-24 03:00:27
@article{d00d0391-ba8d-4984-8336-a6c93df7c141,
  abstract     = {With fast growing power consumption and device miniaturization, micro/minichannels are superior to macrochannels or conventional channels for high heat-flux dissipation due to their large surface area to volume ratios and high heat transfer coefficients. However, the associated large pressure drop penalty and flow boiling instability of micro/minichannels hinder their advancement in many practical applications. Therefore, enhancement techniques are required to stabilize the flow and further augment the heat transfer performance in micro/minichannels. This work first presents the classification of micro/minichannels for single-phase flow and flow boiling and gives a general statement of heat transfer enhancement. Then a state-of-the-art overview of the most recent enhancement techniques is specifically provided for further sing-phase flow and flow boiling enhancement in micro/minichannels. Two promising enhancement techniques, i.e., interrupted microfins and engineered fluids with additives are discussed for single-phase flow. For flow boiling, the focus is given on several selected enhancement approaches which can effectively mitigate flow boiling instability and another hot research topic, i.e., nanoscale surface modification. Besides, effects of wettability on bubble dynamics are presented, and a concept of flow-pattern based heat transfer enhancement is proposed. For both single-phase flow and flow boiling enhancement, a special emphasis is on those enhancement techniques with high thermal performance and relatively low pressure drop penalty.},
  author       = {Wu, Zan and Sundén, Bengt},
  issn         = {1364-0321},
  keyword      = {Microchannel,Heat transfer enhancement,Pressure drop,Bubble dynamics,Surface modification,Nanofluid,Nanoscale coating},
  language     = {eng},
  pages        = {11--27},
  publisher    = {Elsevier},
  series       = {Renewable & Sustainable Energy Reviews},
  title        = {On further enhancement of single-phase and flow boiling heat transfer in micro/minichannels},
  url          = {http://dx.doi.org/10.1016/j.rser.2014.07.171},
  volume       = {40},
  year         = {2014},
}