Three-dimensional Numerical Study on Turbulent Mixed Convection in Parabolic Trough Solar Receiver Tube

Z. Y. Li; Z. Huang; W. Q. Tao

doi:10.1016/j.egypro.2015.07.422

Three-dimensional Numerical Study on Turbulent Mixed Convection in Parabolic Trough Solar Receiver Tube

Z. Y. Li
, Z. Huang
, W. Q. Tao

School of Energy and Power Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Conference article › peer-review

10 Scopus citations

Abstract

The present work focuses on the fully developed mixed turbulent flow and heat transfer in receiver tube heated by non-uniform heat flux, especially the effect of local buoyancy force induced by the non-uniform heat flux at Reynolds number of 2×10⁴-10⁵, Prandtl number of 1.5 and Grashof number of 0-10¹². The friction factor and Nusselt number between forced convection and mixed convection under uniform heat flux and non-uniform heat flux are analyzed quantitatively. The effect of solar elevation angel on the fluid flow and heat transfer is also investigated. We found that it is not feasible to perform the heat transfer design and prediction for parabolic trough solar collector based on the experimental correlations for forced convection or traditional mixed convention.

Original language	English
Pages (from-to)	462-466
Number of pages	5
Journal	Energy Procedia
Volume	75
DOIs	https://doi.org/10.1016/j.egypro.2015.07.422
State	Published - 2015
Event	7th International Conference on Applied Energy, ICAE 2015 - Abu Dhabi, United Arab Emirates Duration: 28 Mar 2015 → 31 Mar 2015

Keywords

Parabolic trough solar collector
non-uniform heat flux
numerical simulation
turbulent mixed convection

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10.1016/j.egypro.2015.07.422

Cite this

@article{fddf2b39f6344ac8812a7648dbcc563f,

title = "Three-dimensional Numerical Study on Turbulent Mixed Convection in Parabolic Trough Solar Receiver Tube",

abstract = "The present work focuses on the fully developed mixed turbulent flow and heat transfer in receiver tube heated by non-uniform heat flux, especially the effect of local buoyancy force induced by the non-uniform heat flux at Reynolds number of 2×104-105, Prandtl number of 1.5 and Grashof number of 0-1012. The friction factor and Nusselt number between forced convection and mixed convection under uniform heat flux and non-uniform heat flux are analyzed quantitatively. The effect of solar elevation angel on the fluid flow and heat transfer is also investigated. We found that it is not feasible to perform the heat transfer design and prediction for parabolic trough solar collector based on the experimental correlations for forced convection or traditional mixed convention.",

keywords = "Parabolic trough solar collector, non-uniform heat flux, numerical simulation, turbulent mixed convection",

author = "Li, \{Z. Y.\} and Z. Huang and Tao, \{W. Q.\}",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors. Published by Elsevier Ltd.; 7th International Conference on Applied Energy, ICAE 2015 ; Conference date: 28-03-2015 Through 31-03-2015",

year = "2015",

doi = "10.1016/j.egypro.2015.07.422",

language = "英语",

volume = "75",

pages = "462--466",

journal = "Energy Procedia",

issn = "1876-6102",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Three-dimensional Numerical Study on Turbulent Mixed Convection in Parabolic Trough Solar Receiver Tube

AU - Li, Z. Y.

AU - Huang, Z.

AU - Tao, W. Q.

PY - 2015

Y1 - 2015

N2 - The present work focuses on the fully developed mixed turbulent flow and heat transfer in receiver tube heated by non-uniform heat flux, especially the effect of local buoyancy force induced by the non-uniform heat flux at Reynolds number of 2×104-105, Prandtl number of 1.5 and Grashof number of 0-1012. The friction factor and Nusselt number between forced convection and mixed convection under uniform heat flux and non-uniform heat flux are analyzed quantitatively. The effect of solar elevation angel on the fluid flow and heat transfer is also investigated. We found that it is not feasible to perform the heat transfer design and prediction for parabolic trough solar collector based on the experimental correlations for forced convection or traditional mixed convention.

AB - The present work focuses on the fully developed mixed turbulent flow and heat transfer in receiver tube heated by non-uniform heat flux, especially the effect of local buoyancy force induced by the non-uniform heat flux at Reynolds number of 2×104-105, Prandtl number of 1.5 and Grashof number of 0-1012. The friction factor and Nusselt number between forced convection and mixed convection under uniform heat flux and non-uniform heat flux are analyzed quantitatively. The effect of solar elevation angel on the fluid flow and heat transfer is also investigated. We found that it is not feasible to perform the heat transfer design and prediction for parabolic trough solar collector based on the experimental correlations for forced convection or traditional mixed convention.

KW - Parabolic trough solar collector

KW - non-uniform heat flux

KW - numerical simulation

KW - turbulent mixed convection

UR - https://www.scopus.com/pages/publications/84947049410

U2 - 10.1016/j.egypro.2015.07.422

DO - 10.1016/j.egypro.2015.07.422

M3 - 会议文章

AN - SCOPUS:84947049410

SN - 1876-6102

VL - 75

SP - 462

EP - 466

JO - Energy Procedia

JF - Energy Procedia

T2 - 7th International Conference on Applied Energy, ICAE 2015

Y2 - 28 March 2015 through 31 March 2015

ER -

Three-dimensional Numerical Study on Turbulent Mixed Convection in Parabolic Trough Solar Receiver Tube

Abstract

Keywords

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