Plant pixel: An optimized bio-inspired living wall system
Maricruz Solera Jimenez, João Cortesão, Sanda Lenzholzer, Ralf Walker
Abstract
Current Modular Living Wall Systems (MLWS) have many benefits but are often also characterized by high costs, high-embodied carbon and short life span materials. To address these issues a bio-inspired MLWS prototype was developed: Plant Pixel. The prototype aimed at improved performance on criteria: low-embodied carbon, hydrological and structural performance, plant performance, simple assembly-disassembly and cost-effectiveness. The Plant Pixel was built in a full-scale mock-up comprising 500 modules and 500 plants. It was found that the selected recycled materials (recycled PVCU, recycled textile, and recycled aluminum), a high-water holding capacity (61.0 l/m2) substrate, low-maintenance plants, and a plug-in fixing system, reduced embodied carbon (66.7 kgCO2e/m2) and improved the hydrological and structural MLWS performance. Additionally, the Plant Pixel prototype had lower material costs (256.1 €/m2) compared to other MLWS products. The Plant Pixel prototype met all the design criteria and exhibited the potential to become a marketable product.