Cited by 232Heat Transfer and OptimizationHeat Transfer and Boiling StudiesHeat Transfer Mechanisms

A review on microchannel heat exchangers and potential applications

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Khan, Mesbah G., Fartaj, Amir·2011·International Journal of Energy Research

Abstract

Energy conversion and utilization are continuous but ever increasing processes for sustainability and economic development. Environmental concerns, such as thermal and air pollution, have dictated the practices of energy conservation and recovery, as well as the implementation of clean energy sources. Heat exchangers are an important component for processes where energy conservation is achieved through enhanced heat transfer. Such issues as increased energy demands, space limitations, and materials savings have highlighted the necessity for miniaturized light-weight heat exchangers, which provide high heat transfer for a given heat duty. However, while traditional heat exchangers employ conventional tubes (⩾6 mm) with various cross-sections, orientations, and even the enhanced surface textures, the technology is nearing its limits. Microchannels (broadly ⩽1 mm) represent the next step in heat exchanger development. They are a particular target of research due to their higher heat transfer and reduced weight as well as their space, energy, and materials savings potential over regular tube counterparts. In contrast to traditional tube heat exchangers, the heat transfer and fluid flow correlations, and the systematic design procedures are not yet well established for microchannels. It remains to be established whether the classical fluid flow and heat transfer theories and correlations are valid for microchannels. Numerous investigations are underway with researchers consolidating evidence on both sides of this question. This paper surveys the published literature on the status and potential of microchannels, and it identifies research needs, and defines the scope for long-term research. Based on results from the review, an air-to-liquid crossflow experimental infrastructure has been developed and commissioned. It will be used to investigate the heat transfer and fluid flow for a variety of working fluids in different microchannel test specimens. Further information and the heat balance status of the developed test facility are also presented. Copyright © 2010 John Wiley & Sons, Ltd.

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  • MCHX are finding wider applications because of their high performances and compactness compared to typical round-tube heat exchangers.

    “In addition to their use in automotive systems, those heat exchangers are finding wider applications because of their high performances and compactness compared to typical round-tube heat exchangers (Khan and Fartaj, 2011).”

    From Modeling of a fan-supplied flat-tube heat exchanger exposed to non-uniform frost growth (2017) · cites this paper as Khan and Fartaj, 2011

    The Introduction supports the performance and compactness comparison, describing higher heat transfer, lower weight, and smaller size than conventional heat exchangers. But it describes wider MCHX applications as potential rather than established: mass production and commercial application were “not very common” and microchannels had yet to penetrate heating and cooling applications. Page numbers were not available in our copy. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Compared with conventional fin-and-tube heat exchangers, microchannel heat exchangers have higher heat transfer efficiency, less refrigerant charging, and lower cost.

    “Compared with the conventional fin-and-tube heat exchanger (FTHX), the MCHX has the advantages of higher heat transfer efficiency [1,2], less refrigerant charging [3], and lower cost [4,5].”

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Research works printed but not linked: 20

  1. Steinke ME, Kandlikar SG. Review of single- phase heat transfer enhancement techniques for application in microchannels, minichannels and microdevices. Heat and Technology 2004; 22:3-11.
  2. Shah RK, Sekulic DP. Fundamentals of Heat Exchanger Design. Wiley: NJ, 2003.
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  4. Rugh JP, Pearson JT, Ramadhyani S. A study of a very compact heat exchanger used for passenger compartment heating in automobiles. Compact Heat Exchangers for Power and Process Industries HTDS ASME 1992; 201:15-24.
  5. Detlef W, Kurt WR, James B. Microchannel heat exchangers-emerging technologies. ASHRAE Journal 2003:107-109.
  6. Kandlikar SG. Microchannels and minichannels- History, terminology, classification and current research needs. Proceedings of the 1st International Conference on Microchannels and Minichannels ICMM2003. ASME Publications: NY, U.S.A., 24-25 April 2003; Paper ] ICMM2003-1000.
  7. A review on microchannel heat M. G. Khan and A. Fartaj Int. J. Energy Res. 2011; 35:553-582 r 2010 John Wiley & Sons, Ltd. DOI: 10.1002/er · DOI
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Authors
Khan, M. G., & Fartaj, A.
Affiliations
University of Windsor (CA)
Corresponding author
Fartaj, Amir
Venue
International Journal of Energy Research
Publisher
Wiley
Published
2011-05-06
Volume
35
Issue
7
Pages
553-582
ISSN
0363-907X (ISSN-L)
OpenAlex
W2083412469
Cited by
232
References
150
Citations by year
2026: 18 · 2025: 28 · 2024: 16 · 2023: 13 · 2022: 16 · 2021: 15 · 2020: 12 · 2019: 16 · 2018: 16 · 2017: 13 · 2016: 20 · 2015: 8 · 2014: 9 · 2013: 16 · 2012: 11
FWCI
19.48
Type
journal article
Language
en
Open access
Locations
International Journal of Energy Research (publishedVersion)
Funders
Natural Sciences and Engineering Research Council of Canada
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Heat Transfer and Optimization
  • Physical Sciences › Engineering › Mechanical Engineering › Heat Transfer and Boiling Studies
  • Physical Sciences › Engineering › Mechanical Engineering › Heat Transfer Mechanisms
Keywords
microchannel heat exchangers, microchannels, heat transfer enhancement, heat transfer correlations, heat exchanger design, test facility, energy conservation, working fluid

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