2026-04-14T03:07:12Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1792772025-12-04T20:59:51Zcom_2072_1057col_2072_478796col_2072_478917

00925njm 22002777a 4500 dc Barreneche, Camila author Martín, Marc author Calvo de la Rosa, Jaume author Majó Robles, Marc author Fernández Renna, Ana Inés author 2021-07-21T10:38:12Z 2021-07-21T10:38:12Z 2019-03-29 2021-07-21T10:38:13Z The use of adequate thermal energy storage (TES) systems is an opportunity to increase energy efficiency in the building sector, and so decrease both commercial and residential energy consumptions. Nano-enhanced phase change materials (NEPCM) have attracted attention to address one of the crucial barriers (i.e. low thermal conductivity) to the adoption of phase change materials (PCM) in this sector. In the present study two PCM based on fatty acids, capric and palmitic acid, were nano-enhanced with low contents (1.0 wt.%, 1.5 wt.% and 3.0 wt.%) of copper (II) oxide (CuO) nanoparticles. Copper (II) oxide (CuO) was synthesized via coprecipitation method obtaining 60⁻120 nm diameter sized nanoparticles. Thermal stability and high thermal conductivity were observed for the nano-enhanced phase change materials (NEPCM) obtained. Experimental results revealed remarkable increments in NEPCM thermal conductivity, for instance palmitic acid thermal conductivity was increased up to 60% with the addition of 3 wt.% CuO nanoparticles. Moreover, CuO nanoparticles sedimentation velocity decreases when increasing its content. Nanopartícules Edificis Energia Nanoparticles Buildings Energy Own-Synthetize Nanoparticles to Develop Nano-Enhanced Phase Change Materials (NEPCM) to Improve the Energy Efficiency in Buildings