Nusselt Number Correlation of Microchannel Heat Exchanger with S-Shaped Fins
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- TSUZUKI Nobuyoshi
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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- KATO Yasuyoshi
- MCX Institute Inc.
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- MUTO Yasushi
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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- ISHIZUKA Takao
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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- UTAMURA Motoaki
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
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- ARITOMI Masanori
- Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology
Bibliographic Information
- Other Title
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- S字型フィンを有するマイクロチャンネル熱交換器に関するNusselt数相関式
- Sジガタ フィン オ ユウスル マイクロチャンネル ネツコウカンキ ニ カンスル Nusseltスウ ソウカンシキ
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Abstract
An advanced microchannel heat exchanger (MCHE) with S-shaped fins can realize high heat transfer performance and reduced pressure drop performance. Simulation calculations by the three-dimensional computational fluid dynamics (3D-CFD) code were examined for a MCHE with S-shaped fins using carbon dioxide (CO2) as the working fluid in the wide range of inlet pressure and temperature conditions, which are from subcritical conditions to supercritical conditions. From the numerical results, a Nusselt number correlation was obtained using multivariable analysis. The standard deviation between the correlation and numerical results was 6.1%. A MCHE test piece with the same flow channel configuration as that for numerical simulation was manufactured, and experimental verification of the thermal-hydraulic performance of the test piece was examined. The heat transfer performance of the test piece was calculated using the Nusselt number correlation and was compared with experimental results. Numerical heat transfer performance showed good coincidence with a deviation of 2.5%. The conditions used in numerical simulation include the conditions of a recuperator and an intermediate heat exchanger of CO2 gas turbine cycle. Using the obtained Nusselt number correlation, designing these heat exchangers becomes easier.<br>
Journal
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- Transactions of the Atomic Energy Society of Japan
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Transactions of the Atomic Energy Society of Japan 9 (1), 13-20, 2010
Atomic Energy Society of Japan
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Details 詳細情報について
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- CRID
- 1390001205187348864
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- NII Article ID
- 10025997856
- 130002149227
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- NII Book ID
- AA11643165
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- ISSN
- 21862931
- 13472879
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- NDL BIB ID
- 10603311
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed