Laboratory and full-scale experiment of a novel hybrid system to harvest energy through concrete pavement
Résumé
Havesting energy from the sun through the pavement is a powerful lever to fight against the worldwide energy crisis. Indeed, the pavement surface is daily exposed to the sun light and represents an enormous source of potential harvesting. So far, solutions involving photovoltaic cells placed on the pavement or using a heat-transfert fluid circulating through the structure are studied.
Recently, a novel hybrid system is being developed by University Gustave Eiffel combining the two solutions. The structure is made of a porous concrete layer where a heat-transfert fluid is circulating sandwiched between a waterproof structural concrete layer placed below and a photovoltaic layer placed on top. The photovoltaic layer is composed of PV cells protected by a semi-transparent layer designed to support the traffic vehicles, guarantee the skid resistance and enabling the passage of the sun light.
At the beginning of the research, the semi-transparent layer and the porous concrete have been optimized in terms of energy harvesting and a laboratory size prototype have been constructed..
The present paper deals with the laboratory size prototype energy havesting evaluation giving promising results regarding the potential efficiency of the hybrid system (measured at 67.8%). The paper also presents a full scale prototype of the hybrid system tested in real climatic conditions and shows some first results regarding thermal harvested energy measured around 240 W/m2 in the specific conditions tested.
Domaines
Sciences de l'ingénieur [physics]Origine | Fichiers produits par l'(les) auteur(s) |
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