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Analysis of Flow and Heat Transfer Characteristics ofSupercritical C02 in Circular Tube
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[1]ZHANG Lina,LIU Minshan,DONG Qiwu.Analysis of Flow and Heat Transfer Characteristics ofSupercritical C02 in Circular Tube[J].Journal of Zhengzhou University (Engineering Science),2009,30(04):69-72.
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 30卷 Number of periods: 2009年04期 Page number: 69-72 Column: Public date: 1900-01-01
Title:
Analysis of Flow and Heat Transfer Characteristics ofSupercritical C02 in Circular Tube
Author(s):
ZHANG Lina; LIU Minshan; DONG Qiwu
Thermal Energy Engineering Research Centre，Zhengzhou University，Zhengzhou 450002，China
Keywords:
upercritical fluid; convection heat transfer; carbon dioxide; numerical study
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DOI:
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Abstract:
Convection heat transfer of CO，at supercritical pressures in horizontal circular tube is studied numerically．The effect of heat flux，temperature of the wall，mass flux，and pressure on the heat transfer coeffi—cient is investigated．The simulated data indicates that heat flux and temperature of the wall affect slightly theconvection heat transfer of supercritical C02，and mass flux and pressure affect it significantly．With the in—crease of mass flux，heat transfer coefficient is improved distinctly．The operation pressure is closer to the critical pressure，the change of heat transfer coefficient near critical line is clearer，and the peak value is higher．
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Last Update: 1900-01-01
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