[1] Chen Yaping, Mei Na, Shi Mingheng,. Numerical simulation of heat transfer enhancement bystrip-coil-baffles in tube-bundle for a tube-shell heat exchanger [J]. Journal of Southeast University (English Edition), 2007, 23 (1): 81-85. [doi:10.3969/j.issn.1003-7985.2007.01.017]

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Numerical simulation of heat transfer enhancement bystrip-coil-baffles in tube-bundle for a tube-shell heat exchanger()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

23

Issue:

2007 1

Page:

81-85

Research Field:

Energy and Power Engineering

Publishing date:

2007-03-30

Info

Title:

Numerical simulation of heat transfer enhancement bystrip-coil-baffles in tube-bundle for a tube-shell heat exchanger

Author(s):

Chen Yaping;  Mei Na;  Shi Mingheng

School of Energy and Environment, Southeast University, Nanjing 210096, China

Keywords:

heat transfer enhancement;  strip-coil-baffle;  tube-shell heat exchanger;  vortex flow;  numerical simulation

PACS:

TK172

DOI:

10.3969/j.issn.1003-7985.2007.01.017

Abstract:

A novel strip-coil-baffle structure used to enhance heat transfer and support the tube bundle for a tube-shell heat exchanger is proposed.The new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger.The numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted.The computational domain consists of two strip-coil sleeved tubes and two bare tubes oppositely placed at each corner of a square.The velocity and temperature fields in such strip-coil-baffled channel are simulated using FLUENT software.The effects of the strip-coil-baffles on heat transfer enhancement and flow resistance in relation to the Reynolds number are analyzed.The results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40% to 55% in comparison with a bare tube bundle;meanwhile, higher flow resistance is also accompanied.It is believe that the strip-coil-baffled heat exchanger should have promising applications in many industry fields.

References:

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[8] Mei Na, Chen Yaping, Shi Mingheng.Numeric simulation of heat transfer and flow resistance at shell-side of coil-strip-baffle heat exchanger [J].Journal of Engineering Thermophysics, 2005, 26(2):310-312.(in Chinese)
[9] Li Xin, Deng Bin, Tao Wenquan.Study on three-dimensional numerical simulation of shell-and-tube heat exchangers with finned rod bundles [J].Journal of Engineering Thermophysics, 2005, 26(2):316-318.(in Chinese)
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Memo

Memo:

Biography: Chen Yaping(1956—), male, doctor, professor, ypgchen@sina.com.

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