@misc{10498/35700,
year = {2024},
url = {http://hdl.handle.net/10498/35700},
abstract = {This work discusses the applicability of lightweight aggregate-encapsulated n-octadecane with 1.0 wt.% of Cu nanoparticles, for enhanced thermal comfort in buildings by providing thermal energy storage functionality to no-fines concrete. A straightforward two-step procedure (impregnation and occlusion) for the encapsulation of the nano-additivated phase change material in lightweight aggregates is presented. Encapsulation efficiencies of 30–40% are achieved. Phase change behavior is consistent across cycles. Cu nanoparticles provide nucleation points for phase change and increase the rate of progression of phase change fronts due to the enhancement in the effective thermal conductivity of n-octadecane. The effective thermal conductivity of the composites remains like that of regular lightweight aggregates and can still fulfil thermal insulation requirements. The thermal response of no-fines concrete blocks prepared with these new aggregates is also studied. Under artificial sunlight, with a standard 1000 W·m−2 irradiance and AM1.5G filter, concrete samples with the epoxy-coated aggregate-encapsulated n-octadecane-based dispersion of Cu nanoparticles (with a phase change material content below 8% of the total concrete mass) can effectively maintain a significant 5 °C difference between irradiated and non-irradiated sides of the block for ca. 30 min.},
publisher = {MDPI},
keywords = {building materials},
keywords = {lightweight aggregates},
keywords = {nanomaterials},
keywords = {phase change materials},
keywords = {thermal comfort},
keywords = {thermal energy storage},
title = {Thermal Energy Storage in Concrete by Encapsulation of a Nano-Additivated Phase Change Material in Lightweight Aggregates},
doi = {10.3390/NANO14141180},
author = {Carrillo Berdugo, Iván and Gallardo Bernal, Juan Jesús and Ruiz Marín, Nazaret and Guillén Domínguez,  Violeta and Alcántara Puerto, Rodrigo and Navas Pineda, Francisco Javier and Poce Fatou, Juan Antonio},
}