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      DMEGC Solar lance des modules à cadre en acier de conception nouvelle, promettant une fiabilité accrue et une bifacialité supérieure

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      News provided by

      DMEGC Solar

      Nov 10, 2026, 15:18 ET

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      JINHUA, Chine, 10 novembre 2026 /PRNewswire/ -- DMEGC Solar a récemment lancé une nouvelle série de modules photovoltaïques à cadre en acier. Ces nouveaux produits représentent une évolution technique significative par rapport aux cadres traditionnels en aluminium, offrant une durabilité accrue et une conception de section révolutionnaire qui maximise la récupération d'énergie à l'arrière.

      Le passage à l'acier est motivé par une combinaison d'avantages techniques et environnementaux. Selon la documentation technique de l'entreprise, la nuance d'acier utilisée offre une résistance à la traction bien supérieure, presque le double de celle des alliages d'aluminium standard. Cela permet aux modules de résister à des charges mécaniques extrêmes — avec une charge de neige pouvant atteindre 6 000 Pa et une charge de vent pouvant atteindre 5 000 Pa lorsqu'ils sont correctement montés.

      L'une des améliorations les plus importantes en matière de fiabilité provient du coefficient de dilatation thermique (CDT) du matériau. L'acier a un CDT de 12 (10⁻⁶ m/k), ce qui est beaucoup plus proche du verre (6,9) que de l'aluminium (23). Cette compatibilité suggère que les modules à ossature métallique subissent beaucoup moins de contraintes environnementales au cours de leur durée de vie, réduisant ainsi le risque de microfissures par rapport aux modules à ossature en aluminium.

      Le point fort de ce nouveau produit est le nouveau design de la section transversale du cadre en acier. Contrairement aux cadres traditionnels qui projettent des ombres sur la face arrière du module, la section transversale innovante en forme de « S » de DMEGC réduit l'ombrage vertical à l'arrière du module de 76 %. Ce design accroît la surface arrière non ombragée de 3,6 % et accroît théoriquement le facteur de bifacialité d'environ 2,8 %. Associés à de nouvelles technologies cellulaires et à un revêtement antireflet (ARC) sur le verre arrière, les modules DMEGC peuvent atteindre un facteur de bifacialité allant jusqu'à 85 %.

      Selon les simulations de rendement de DMEGC, ce facteur de bifacialité de 85 % se traduit par une production d'électricité annuelle de 2 078 kWh/kWc/an. Cela représente un gain supplémentaire de 0,6 % de recettes de production d'énergie par rapport aux modules conventionnels, ce qui permet aux promoteurs de projets d'accroître leur bénéfice net de manière tangible.

      Pour répondre aux préoccupations concernant la corrosion de l'acier, DMEGC Solar utilise un acier revêtu de Zn-Al-Mg (ZAM). Ce revêtement spécialisé offre une résistance exceptionnelle à la dégradation environnementale. Les modules ont subi des tests indépendants rigoureux de résistance au brouillard salin et à l'ammoniac.

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