Effects of Volumetric Property Models on the Efficiency of a Porous Volumetric Solar Receiver

Xuewei Ni, Tiening Liu and Dong Liu
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Xuewei Ni: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Tiening Liu: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Dong Liu: School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Energies, 2022, vol. 15, issue 11, 1-12

Abstract: A porous volumetric receiver is the key component in concentrated solar power systems. In this paper, we investigate the effects of volumetric parameter models on the heat collection efficiency of the volumetric receiver by numerical simulations with the combination of local thermal non-equilibrium and discrete ordinate methods. Seven volumetric convective heat transfer coefficient models and three extinction coefficient models were investigated. The efficiencies calculated using these models were compared among each other. The results show that volumetric convective heat transfer coefficient models have significant effects with a maximum difference of 27.7% in receiver efficiency for these models. Extinction coefficient models have less effects on receiver efficiency with a maximum difference of 7.3%.

Keywords: solar energy; volumetric receiver; porous media; volumetric parameter model; numerical simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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