Low-carbon indoor humidity regulation via 3D-printed superhygroscopic building components
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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17
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Nature Communications, Volume 16, issue 1
Abstract
Indoor humidity can significantly impact our comfort and well-being, often leading to the use of mechanical systems for its management. However, these systems can result in substantial carbon emissions and energy precarity. This study offers an alternative: using low-carbon materials that naturally buffer moisture to passively regulate the indoor humidity. A geopolymer composite incorporating industrial waste is implemented via binder jet 3D printing technology. The superhygroscopic nature of the material, combined with the optimal geometry of 3D-printed components, unlocks remarkable potential for passive humidity regulation, achieving a moisture buffering value over 14 g·m⁻²·%RH⁻¹. The use of 3D-printed, geopolymer tiles for surface finishing in a library hosting 15 people was shown to improve annual indoor hygrometric comfort by up to 85%, a performance inconceivable with conventional materials and techniques. Additionally, the environmental impact of these tiles is significantly lower than that of a conventional dehumidification system. This study paves the way for merging highly hygroscopic, low-carbon materials with advanced manufacturing techniques to regulate indoor humidity levels and reduce our dependency on mechanical systems.Description
Publisher Copyright: © 2024. The Author(s).
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Posani, M, Voney, V, Odaglia, P, Du, Y, Komkova, A, Brumaud, C, Dillenburger, B & Habert, G 2025, 'Low-carbon indoor humidity regulation via 3D-printed superhygroscopic building components', Nature Communications, vol. 16, no. 1, 425. https://doi.org/10.1038/s41467-024-54944-1