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Modeling of heat conduction processes in porous absorber of open type of solar tower stations

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  • Cheilytko, Andrii
  • Schwarzbözl, Peter
  • Wieghardt, Kai

Abstract

An analysis of existing methods for calculating heat and mass transfer processes in porous absorbers of receivers of tower solar power plants is carried out. It is shown that the resulting thermophysical properties of the material are influenced not only by the porosity but also by the location of the pores in the material volume. The criterion of the dislocation vector is proposed as a mathematical indicator of various porous structures. The shortcomings of the existing dependences of the effective thermal conductivity of a material on the type of porosity are shown. The most reliable dependences for determining the thermophysical parameters of a porous medium are also determined and independent factors are proposed on which the mathematical model of heat and mass transfer in open-type solar receivers should be based.

Suggested Citation

  • Cheilytko, Andrii & Schwarzbözl, Peter & Wieghardt, Kai, 2023. "Modeling of heat conduction processes in porous absorber of open type of solar tower stations," Renewable Energy, Elsevier, vol. 215(C).
    • Handle: RePEc:eee:renene:v:215:y:2023:i:c:s0960148123009011
    DOI: 10.1016/j.renene.2023.118995
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    References listed on IDEAS

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    1. Avila-Marin, Antonio L. & Fernandez-Reche, Jesus & Gianella, Sandro & Ferrari, Luca & Sanchez-Señoran, Daniel, 2022. "Experimental study of innovative periodic cellular structures as air volumetric absorbers," Renewable Energy, Elsevier, vol. 184(C), pages 391-404.
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    4. Avila-Marin, Antonio L. & Alvarez de Lara, Monica & Fernandez-Reche, Jesus, 2018. "Experimental results of gradual porosity volumetric air receivers with wire meshes," Renewable Energy, Elsevier, vol. 122(C), pages 339-353.
    5. Avila-Marin, Antonio L., 2022. "CFD parametric analysis of wire meshes open volumetric receivers with axial-varied porosity and comparison with small-scale solar receiver tests," Renewable Energy, Elsevier, vol. 193(C), pages 1094-1105.
    6. Avila-Marin, Antonio L. & Caliot, Cyril & Alvarez de Lara, Monica & Fernandez-Reche, Jesus & Montes, Maria Jose & Martinez-Tarifa, Adela, 2019. "Homogeneous equivalent model coupled with P1-approximation for dense wire meshes volumetric air receivers," Renewable Energy, Elsevier, vol. 135(C), pages 908-919.
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