a+r Architekten在图宾根市中心附近设计的“Westspitze”商业大楼，是一座采用优质生态木材混合结构建造的商业建筑，这亦是德国首批拥有此类规模的项目之一。凭借近乎隐形的创新太阳能立面，该建筑实现了全方位的可持续性，犹如一座布局紧凑的“发电大楼”。

a+r Architekten have designed the “Westspitze” near Tübingen’s city centre, an office and commercial building in ecologically high-quality timber hybrid construction, which is one of the first projects of this scale in Germany. With its innovative and practically invisible solar façade, the building is sustainable in every respect and a compact “power plant”.

▼“Westspitze”商业大楼是一座采用优质生态木材混合结构建造的商业建筑 © Brigida González the “Westspitze” is an office and commercial building in ecologically high-quality timber hybrid construction

建筑团队选择了拥有彩色涂层的光伏单元，并将其整合到建筑由粉末涂层铝板构成的幕墙立面上，能够随着入射光线的变化而呈现出不同的颜色。这些创新的薄膜太阳能板散发出古铜色的光泽，为建筑赋予了独特的氛围和情绪。整个外墙的几何形态需要与木制的支撑结构形成精确的匹配。外墙和楼板一共使用了体积约为1100立方米的实心云杉木，它们来自于场地北部的黑森林和上斯瓦比亚地区。根据建筑事务所的描述，这些木材能够实现“超过1000吨的永久固碳量——其中包括与钢筋混凝土建筑相比所减少的二氧化碳量。”

The architects chose colour- coated PV elements that were integrated into a curtain-wall façade made of powder-coated aluminium sheets, oscillating in different colours depending on the incidence of light. These innovative thin-film solar panels convey a certain emotionality with their bronze-coloured shimmer. The entire façade geometry had to be very precisely matched to the requirements of the timber supporting structure. A total of approx. 1,100 cubic metres of solid spruce from the northern Black Forest and Upper Swabia was used for the exterior walls and floor slabs – according to the architectural office, this is “more than 1,000 tonnes of permanently bound CO2* – plus the CO2 savings compared to building with reinforced concrete”.

▼建筑外观，exterior view © Brigida González

▼整个外墙的几何形态需要与木制的支撑结构形成精确的匹配 © Brigida González The entire façade geometry had to be very precisely matched to the requirements of the timber supporting structure

▼创新的薄膜太阳能板散发出古铜色的光泽 © Brigida González Innovative thin-film solar panels convey a certain emotionality with their bronze-coloured shimmer