WOOD MATERIAL SCIENCE AND ENGINEERING, sa.Published online: 13 Nov 2025, ss.1-15, 2025 (SCI-Expanded, Scopus)
The integration of phase change materials (PCMs) into buildings can reduce operational energy (OE) butmay increase embodied energy (EE), particularly with fossil-based PCMs, affecting total energy efficiency.Bio-based PCMs (BPCMs) offer a sustainable alternative, lowering EE and environmental impacts. Using acradle-to-grave approach, this study assessed the environmental impacts of a newly developed wood-BPCM composite panel in Uppsala, Sweden. To investigate the relationship between EE and OEconsumption and monitor energy use during operation, the operational phase was analysed for twoexperimental cubes in Uppsala. A process-based Life Cycle Assessment (LCA) was used, based on theEnvironmental Footprint (EF) and ReCiPe methods. In the wood-BPCM panel production, over 95% ofenvironmental impacts originated from manufacturing and raw materials. For the cubes, the BPCMcube showed high environmental performance over 50 years, offsetting its initially higher climateimpact compared to the medium-density fibreboard (MDF) reference cube by year 14 and achieving a15% reduction. Despite MDF’s higher density resulting in greater biogenic carbon uptake and energyrecovery, biogenic carbon negatively affected the BPCM cube. Nonetheless, the BPCM cubemaintained a 10% lower climate impact, emphasising its potential for sustainable applications.