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Des panneaux photovotaïques en 3D pour produire jusqu’à 20 fois plus d’énergie

Des panneaux photovotaïques en 3D pour produire jusqu'à 20 fois plus d'énergie
Les panneaux solaires pourraient multiplier, sous cette forme, par 20 leur rendement au mètre carré occupé au sol

Des chercheurs ont récemment mis au point une nouvelle forme de panneaux photovoltaïques en trois dimensions qui permet de capter plus de lumière et pendant plus longtemps, augmentant ainsi sensiblement le rendement des cellules photovoltaïques.

C’est à une équipe de chercheurs du très prestigieux Massachusetts Institut of Technology (MIT) (États-Unis) que l’on doit ces nouveaux panneaux solaires en 3D.

Ceux d’aujourd’hui sont très plats et ne donnent donc leur pleine mesure énergétique que lorsque le soleil est juste au-dessus d’eux. Les nouvelles formes envisagées, qu’elles soient cubiques ou bien en accordéon, permettraient de pallier ce manque et d’obtenir un rendement optimal aussi bien au petit matin que pendant l’hiver. Des panneaux réfléchissants insérés au sein de la structure en trois dimensions renverraient en effet les rayons vers d’autres qui ne sont pas exposés au soleil, d’où un captage de la lumière vingt fois supérieur (!)

Selon le Professeur Jeffrey Grossman, responsable de l’équipe de recherche, la construction de telles structures est rentable car le prix des cellules photovoltaïques a considérablement baissé ces dernières années, au point qu’elles sont devenues moins cher que leurs structures d’appui.

L’équipe de chercheurs, elle, est actuellement en train de travailler sur une structure en forme de tour qui pourrait être livrée à plat et montée sur place. La prochaine étape sera d’examiner un ensemble de tours solaires afin d’observer l’effet de l’ombre d’une tour sur une autre.

Une remarquable découverte du MIT donc, et qui pourrait donner un vrai coup de fouet à l’énergie solaire, filière confrontée à des fortunes diverses selon les pays.

Crédits photos : Allegra Boverman - MIT
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    [...] L’équipe de chercheurs, elle, est actuellement en train de travailler sur une structure en forme de tour qui pourrait être livrée à plat et montée sur place. La prochaine étape sera d’examiner un ensemble de tours solaires afin d’observer l’effet de l’ombre d’une tour sur une autre. Une remarquable découverte du MIT donc, et qui pourrait donner un vrai coup de fouet à l’énergie solaire, filière confrontée à des fortunes diverses selon les pays. Des panneaux photovotaïques en 3D pour produire jusqu’à 20 fois plus d’énergie | zegreenweb [...]

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