Recuperator is one of the most important components in supercritical carbon dioxide (S-CO2) Brayton cycle, and the printed circuit heat exchanger (PCHE) has been considered as a promising candidate due to its high efficiency and compactness. The airfoil fin (AFF) PCHE has higher thermal-hydraulic performance than conventional zigzag channel PCHE. However, it also suffers from serious local flow resistance caused by the impact area. Two types of new slotted fins (SFs) based on AFFs including longitudinal slot fins (LSFs) and herringbone slot fins (HSFs) are proposed to release the effect of the impact area. The results show that both LSFs and HSFs can significantly reduce the flow resistance in the channel. Meanwhile, the SFs also show higher thermal performance due to the heat transfer area enhancement by the slots. The LSF channel can be considered as a promising candidate in some energy conversion systems due to its good hydraulic performance, while the HSF channel would behave more efficiently such as in refrigeration cycles due to its high thermal performance. Finally, the field synergy principle is employed to discuss the flow drag reduction in SF channels.
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October 2019
Research-Article
Numerical Analysis of Slotted Airfoil Fins for Printed Circuit Heat Exchanger in S-CO2 Brayton Cycle
Xiao Long Li,
Xiao Long Li
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 504677727@qq.com
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 504677727@qq.com
Search for other works by this author on:
G. H. Tang,
G. H. Tang
Mem ASME
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: ghtang@mail.xjtu.edu.cn
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: ghtang@mail.xjtu.edu.cn
1Corresponding author.
Search for other works by this author on:
Yuan Hong Fan,
Yuan Hong Fan
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: eccehomo@stu.xjtu.edu.cn
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: eccehomo@stu.xjtu.edu.cn
Search for other works by this author on:
Dan Lei Yang,
Dan Lei Yang
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 1350374457@qq.com
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 1350374457@qq.com
Search for other works by this author on:
Si Qi Wang
Si Qi Wang
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 1009232262@qq.com
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 1009232262@qq.com
Search for other works by this author on:
Xiao Long Li
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 504677727@qq.com
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 504677727@qq.com
G. H. Tang
Mem ASME
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: ghtang@mail.xjtu.edu.cn
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: ghtang@mail.xjtu.edu.cn
Yuan Hong Fan
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: eccehomo@stu.xjtu.edu.cn
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: eccehomo@stu.xjtu.edu.cn
Dan Lei Yang
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 1350374457@qq.com
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 1350374457@qq.com
Si Qi Wang
MOE Key Laboratory of Thermo-Fluid Science
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 1009232262@qq.com
and Engineering,
School of Energy and Power Engineering,
Xi'an Jiaotong University,
Xi'an 710049, China
e-mail: 1009232262@qq.com
1Corresponding author.
Manuscript received August 15, 2018; final manuscript received February 15, 2019; published online July 19, 2019. Assoc. Editor: Jinliang Xu.
ASME J of Nuclear Rad Sci. Oct 2019, 5(4): 041303 (12 pages)
Published Online: July 19, 2019
Article history
Received:
August 15, 2018
Revised:
February 15, 2019
Citation
Li, X. L., Tang, G. H., Fan, Y. H., Yang, D. L., and Wang, S. Q. (July 19, 2019). "Numerical Analysis of Slotted Airfoil Fins for Printed Circuit Heat Exchanger in S-CO2 Brayton Cycle." ASME. ASME J of Nuclear Rad Sci. October 2019; 5(4): 041303. https://doi.org/10.1115/1.4043098
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