德国弗劳恩霍夫研究所开发了一种新型预制外墙元件，集成了光伏发电和天然可再生材料制成的隔热层。该外墙有两种版本，一种使用大麻纤维作为绝缘材料，另一种使用蘑菇材料，后者可由农业废料制成，均为碳中和和循环材料。这种设计将隔热层整合到光伏外墙元件中，使得组件可以随时按类型分离，无需拆卸相邻元件。它不仅有助于冬季保暖、夏季降温，还能降低成本。与传统的建筑集成光伏系统相比，该设计节省了大量材料，并且安装快速简便，适用于1到3级建筑。目前，原型产品已在校园建筑上安装，并正在进行电气产量、耐久性和隔热性能的监测。

🌿 Fraunhofer研究所开发的光伏隔热一体化预制外墙，采用天然可再生材料，实现了碳中和和循环利用，其中一种版本采用大麻纤维，另一种版本采用蘑菇材料，后者可由农业废料制成。

🍄 该外墙设计将隔热层整合到光伏组件中，使得组件可以随时按类型分离，无需拆卸相邻元件，这不仅简化了安装过程，也方便了材料的回收和再利用。

☀️ 这种光伏外墙不仅提供电力，还具备隔热功能，有助于冬季保暖、夏季降温，同时通过减少材料使用和简化安装，降低了建筑成本，适用于1到3级建筑。

⚡️ 原型产品已在校园建筑上安装，并正在进行电气产量、耐久性、温度、湿度以及隔热性能的监测，以验证其在实际应用中的性能。

Germany’s Fraunhofer Institute for Solar Energy Systems ISE and Fraunhofer Institute for Environment, Safety and Energy Technology UMSICHT have built a pre-fabricated façade element with integrated photovoltaics, with natural renewable raw materials used to incorporate thermal insulation.  Out of the 2 versions of 1 x 1.2 m façades, one uses hemp fibers as an insulating material, while the other is made up of a mushroom material. The latter can also be produced from waste materials from the agricultural industry. Group Leader for building material development at Fraunhofer UMSICHT, Dr. Holger Wack, points out that these materials are carbon-neutral and circular. The researchers add that the insulation is inserted into the BIPV façade element in such a way that the components can be separated by type at any time without dismantling the adjacent elements.  Thermal insulation, incorporated in the form of an additional layer in the building facade, basically helps keep the building warm during winter and cool during summer. The BIPV façade developed by Fraunhofer with integrated thermal insulation can help lower costs. “By eliminating the substructure, large amounts of material are saved compared to classic constructions for building-integrated photovoltaics (BIPV) with a ventilated facade (VHF),” they explain.  Fraunhofer advocates the use of such BIPV façades for the application area of building classes 1 to 3, as these can be quickly and easily installed. The team created the façade element as part of the Fraunhofer lead project ‘BAU-DNS’. “We were already able to confirm the good handling during assembly without special assembly aids such as holding systems and the associated high assembly speed of less than 1.5 hours per module with this first demonstrator," said Team Leader for Solar Building Envelopes - Technology at Fraunhofer ISE, Dr. Jan-Bleicke Eggers.  Produced at Fraunhofer ISE, the initial prototypes were installed on a campus building at the end of October 2024. The team is monitoring their behavior in terms of electrical yield, durability, temperature and humidity, along with thermal insulation properties.