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Bio-Design and Manufacturing  2020 Vol.3 No.4 P.381~386

10.1631/jzus.2002.0381


Effect of particle loading on heat transfer enhancement in a gas-solid suspension cross flow


Author(s):  ZHOU Jin-song, LUO Zhong-yang, GAO Xiang, NI Ming-jiang, CEN Ke-fa

Affiliation(s):  Clean Energy and Environment Engineering Key Lab of Ministry of Education, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   zhoujs@cmee.zju.edu.cn

Key Words:  Multiphase flow, Heat transfer, Particle loading


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ZHOU Jin-song, LUO Zhong-yang, GAO Xiang, NI Ming-jiang, CEN Ke-fa. Effect of particle loading on heat transfer enhancement in a gas-solid suspension cross flow[J]. Journal of Zhejiang University Science D, 2020, 3(4): 381~386.

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author="ZHOU Jin-song, LUO Zhong-yang, GAO Xiang, NI Ming-jiang, CEN Ke-fa",
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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2002.0381"
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%A ZHOU Jin-song
%A LUO Zhong-yang
%A GAO Xiang
%A NI Ming-jiang
%A CEN Ke-fa
%J Journal of Zhejiang University SCIENCE D
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%P 381~386
%@ 1869-1951
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2002.0381

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T1 - Effect of particle loading on heat transfer enhancement in a gas-solid suspension cross flow
A1 - ZHOU Jin-song
A1 - LUO Zhong-yang
A1 - GAO Xiang
A1 - NI Ming-jiang
A1 - CEN Ke-fa
J0 - Journal of Zhejiang University Science D
VL - 3
IS - 4
SP - 381
EP - 386
%@ 1869-1951
Y1 - 2020
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2002.0381


Abstract: 
heat transfer between gas-solid multiphase flow and tubes occurs in m a ny industry processes, such as circulating fluidized bed process, pneumatic conv eying process, chemical process, drying process, etc. This paper focuses on the influence of the presence of particles on the heat transfer between a tube and g as-solid suspension. The presence of particles causes positive enhancement of h e at transfer in the case of high solid loading ratio, but heat transfer reduction has been found for in the case of very low solid loading ratio (Ms of les s than 0.05 kg/kg). A useful correlation incorporating solid loading ratio, particle s ize and flow Reynolds number was derived from experimental data. In addition, the k-ε two-equation model and the Fluctuation-Spectrum- Random-Trajecto ry Model (FSRT Model) are used to simulate the flow field and heat transfer of the gas-ph a se and the solid-phase, respectively. Through coupling of the two phases the mo d el can predict the local and total heat transfer characteristics of tube in gas - solid cross flow. For the total heat transfer enhancement due to particles loadi ng the model predictions agreed well with experimental data.

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