Three-Dimensionally Printed Hierarchal Sand Structures for Space Heating Applications
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Date
2024-08
Publication Type
Journal Article
ETH Bibliography
yes
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Abstract
In addition to the well-documented resource efficiency and geometrical freedom, Digital Fabrication (DFAB) revolutionizes architecture by integrating functionalities into building elements, unlocking untapped potential from the micro- to the macroscales. This study uses binder-jet printed sand for a DFAB prototype-Fireplace2-tailored for indoor heating. Named after its traditional counterpart, Fireplace2 showcases DFAB's prowess in crafting precise microclimates for heightened thermal comfort. Our research, tuning mechanical and thermal properties across micro and meso scales, illustrates DFAB's utility in architects' hands for crafting tailored microclimates. This approach manipulates the effective thermal conductivity and macroscale topology for stability against toppling (0.8 kN). A vertical infill porosity gradient establishes a surface temperature gradient, countering ventilation-induced thermal gradients. With a minimal operational temperature vertical gradient (+0.2 degrees C), complying with international comfort standards (Predicted Mean Vote -0.23, People Dissatisfied 6%), Fireplace2 stands testament to DFAB's microclimate-shaping capabilities despite challenges like foot-level ventilation. The study propels DFAB into a sustainable paradigm, aligning occupant comfort with environmental consciousness, thereby fostering more efficient and enjoyable indoor spaces.
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Publication status
published
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Editor
Book title
Journal / series
Volume
12 (4)
Pages / Article No.
403 - 412
Publisher
Mary Ann Liebert
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
3D printed architecture; binder-jet 3D printing; lattice structures; porous media; indoor heating; thermal comfort
Organisational unit
03902 - Schlüter, Arno / Schlüter, Arno
Notes
Funding
ETH-02 19-2 - Printed Performance: Tuning heat and mass transfer characteristics in digitally fabricated porous structures for building applications (ETHZ)