Study on flow and heat transfer characteristics of composite porous material and its performance analysis by FSP and EDEP

Zhi-Qiang Yu, Yong-Liang Feng, Wen-Jing Zhou, Yu Jin, Ming-Jie Li, Zeng-Yao Li and Wen-Quan Tao

Applied Energy, 2013, vol. 112, issue C, 1367-1375

Abstract: In this paper, the heat transfer characteristics of porous material adopted in the receiver of a concentrated solar power (CSP) with different structure parameters are numerically investigated. The commercial software FLUENT and the user defined function program (UDF) are adopted to implement the simulation. The porous material geometry is represented by periodic structures formed with packed tetrakaidecahedron. The air flow and heat transfer characteristics under the boundary conditions of constant heat flux and constant wall temperature are studied. The field synergy principle (FSP) and the entransy dissipation extremum principle (EDEP) are used to analyze the flow and heat transfer performance of the composite porous material. From the numerical results the best composite of the porous material is obtained. The effects of different boundary conditions are revealed. It is also demonstrated that the FSP and the EDEP are inherently consistent.

Keywords: Air receiver; Composite porous material; Flow and heat transfer performance; Field synergy principle; Entransy dissipation extremum principle (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (4)

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DOI: 10.1016/j.apenergy.2013.02.054

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