Experimental evaluation of a 3D printed air dehumidification system developed with green desiccant materials
Autor
Comino, F.
Romero, Pablo E.
Molero, Esther
Ruiz de Adana, Manuel
Editor
ElsevierFecha
2023Materia
Green desiccantFixed-bed system
Adsorption
Fused filament fabrication
Organic materials
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Energy-efficient dehumidification systems are necessary to reduce energy consumption and CO2 emissions into the atmosphere. Desiccant systems could be an alternative to conventional air dehumidification systems based on direct-expansion units. In the present work, the main objective was to develop and experimentally evaluate a 3D printed desiccant system manufactured using green desiccant materials. Hence, the adsorbent capacity of three 3D printed desiccant materials were studied: polylactic acid (PLA), pine wood with PLA (PW-PLA) and olive pit with PLA (OP-PLA). The results showed that PW-PLA was the material with the highest adsorption capacity of those analysed, up to 12.7 % higher than OP-PLA. A fixed bed desiccant system was fabricated using PW-PLA filament and its latent energy performance was investigated under different inlet air conditions and low regeneration temperature, 50 °C. The evaluation of the energy performance of the 3D printed desiccant system revealed adequate moisture removal capacity values, up to 30 g/sm3, with low pressure drop, less than 552 Pa. These results show the promising potential of 3D printing and green desiccant materials for manufacturing ecological air dehumidification systems.