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Si3N4 nanofelts/paraffin composites as novel thermal energy storage architecture

Valentini, Francesco ; Dorigato, Andrea ; Pegoretti, Alessandro ; Tomasi, Michele ; Sorarù, Gian D. ; Biesuz, Mattia

Journal of materials science, 2021, Vol.56 (2), p.1537-1550 [Periódico revisado por pares]

New York: Springer US

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Título:
Si3N4 nanofelts/paraffin composites as novel thermal energy storage architecture
Autor: Valentini, Francesco ; Dorigato, Andrea ; Pegoretti, Alessandro ; Tomasi, Michele ; Sorarù, Gian D. ; Biesuz, Mattia
Assuntos: Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Classical Mechanics ; Composite materials ; Composite structures ; Cooling ; Crystallography and Scattering Methods ; Energy consumption ; Energy Materials ; Energy storage ; Heating ; Internal energy ; Liquid paraffins ; Materials Science ; Phase change materials ; Phase transitions ; Polymer Sciences ; Silicon nitride ; Solid Mechanics ; Thermal energy ; Thermodynamic properties
É parte de: Journal of materials science, 2021, Vol.56 (2), p.1537-1550
Descrição: The environmental problems associated with global warming are urging the development of novel systems to manage and reduce the energy consumption. An attractive route to improve the energy efficiency of civil buildings is to store the thermal energy thanks, during heating, to the phase transition of a phase-change material (as paraffin) from the solid to the liquid state and vice versa. The stored energy can be then released under cooling. Herein, we developed a novel material (nanofelt) constituted by Si 3 N 4 nanobelts able to absorb huge amounts of liquid paraffin in the molten state and to act as an efficient shape stabilizer. The nanofelt manufacturing technology is very simple and easy to be scaled-up. The effect of the Si 3 N 4 nanofelts density and microstructure on the paraffin sorption and leakage and on the thermal properties of the resulting composite structures is investigated. It is shown that the produced Si 3 N 4 /paraffin composites are able to retain enormous fractions of paraffin (up to 70 wt%) after 44 day of desorption test on absorbent paper towel. The thermal energy storage efficiency measured through calorimetric tests is as high as 77.4% in heating and 80.1% in cooling.
Editor: New York: Springer US
Idioma: Inglês

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Si3N4 nanofelts/paraffin composites as novel thermal energy storage architecture

Valentini, Francesco ; Dorigato, Andrea ; Pegoretti, Alessandro ; Tomasi, Michele ; Sorarù, Gian D. ; Biesuz, Mattia

New York: Springer US

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