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Improving Materials for Compact Thermal Energy Storage: Two Case Studies on Tailor-Made Polyalcohol Mixtures (PCMs) and Composites of Chlorides Confined in Gamma-Alumina or Silica-PEG (TCMs)

Name: Improving Materials for Compact Thermal Energy Storage: Two Case Studies on Tailor-Made Polyalcohol Mixtures (PCMs) and Composites of Chlorides Confined in Gamma-Alumina or Silica-PEG (TCMs)
Keywords: energy storage density, [SPI]Engineering Sciences [physics], Low temperature compact thermal energy storage, phase change materials, thermochemical materials, [CHIM]Chemical Sciences, 600, Low temperature compact thermal energy storage phase change materials thermochemical materials energy storage density tailor-made materials, tailor-made materials

descriptionPublicationkeyboard_double_arrow_right Article 09 Oct 2024 France Publisher:American Chemical Society (ACS)Journal:ACS Applied Energy Materials, volume 7, pages 9,242-9,254 (issn: 2574-0962, eissn: 2574-0962,

Authors: Alenka Ristić; Suzana Mal; Nataša Zabukovec Logar; Elise Bérut; Laurence Bois; Jonathan Outin; Michel Ondarts; +6 Authors

doi: 10.1021/acsaem.4c01702

Improving Materials for Compact Thermal Energy Storage: Two Case Studies on Tailor-Made Polyalcohol Mixtures (PCMs) and Composites of Chlorides Confined in Gamma-Alumina or Silica-PEG (TCMs)

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Abstract

International audience ; determined in appropriate conditions for space heating (adsorption at 30 °C under a water vapor pressure of 12.5 mbar, and desorption at 100 °C). The composites were ranked as follows: γ-alumina-10LiCl (711 kWh.m -3 ), γ-alumina-10CaCl 2 (700 kWh.m -3 ) and γ-alumina-7MgCl 2 (334 kWh.m -3 ). The second type of composites is made of a silica-PEG matrix and of MgCl 2 or CaCl 2 . Experiments in an open lab-scale reactor demonstrated that the silica-PEG matrix effectively stabilized hydrated 25 wt.% MgCl 2 and 36 wt.% CaCl 2 . Among these, the composite with 25 wt.% of MgCl 2 showed the best performance, with an average heat storage density of 216 kWh.m -3 (adsorption at 30 °C under a water vapor pressure of 12.1 mbar, and desorption at 130 °C).

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France

Related Organizations

French National Centre for Scientific Research
France
Ikerbasque
Spain
University of Nova Gorica
Slovenia
National Institute of Chemistry
Slovenia
Université Savoie Mont Blanc
France

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Keywords

energy storage density, [SPI]Engineering Sciences [physics], Low temperature compact thermal energy storage, phase change materials, thermochemical materials, [CHIM]Chemical Sciences, 600, Low temperature compact thermal energy storage phase change materials thermochemical materials energy storage density tailor-made materials, tailor-made materials

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