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Multi-physics fem model of solar hybrid roads for energy harvesting performance evaluation in presence of semi-transparent or opaque pavement surface layer

Authors
  • Le Touz, Nicolas
  • Dumoulin, Jean
  • Piau, Jean-Michel
Publication Date
Aug 10, 2018
Source
HAL-UPMC
Keywords
Language
English
License
Unknown
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Abstract

We present in this paper the concept of solar hybrid road and focus on the thermal performances of such system. Main differences between these multi-layer structures with traditional road structures come from the pavement surface, which can be opaque or semi-transparent and the porous sub-layer, submitted to fluid flow. These structures aim at collecting solar energy during the summer season, what helps also to prevent from a too high temperature and urban heat island effect. A finite element model is presented to couple thermal diffusion, hydraulic convection and radiative transfer. This numerical model allows to compute the temperature field for different weather conditions and also to evaluate the thermal performances of the system. Annual simulations are performed and a comparison between two surface layer solutions for different locations and climates is presented and discussed.

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