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Appl. Sci. 2016, 6(5), 121; doi:10.3390/app6050121

Feasibility of Storing Latent Heat with Liquid Crystals. Proof of Concept at Lab Scale

1
CSSU-Thermal Storage, CIEMAT-PSA, Av. Complutense 40, 28040 Madrid, Spain
2
IU CINQUIMA/Química Inorgánica, Universidad de Valladolid, Paseo de Belén 5, 47071 Valladolid, Spain
3
TECNALIA, Parque Científico y Tecnológico de Guipuzcoa, Mikeletegi Pasealekua 2, 20009 San Sebastián, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Mohammed Mehdi Farid
Received: 25 February 2016 / Accepted: 15 April 2016 / Published: 25 April 2016
(This article belongs to the Special Issue Phase Change Materials (PCM))
View Full-Text   |   Download PDF [2865 KB, uploaded 25 April 2016]   |  

Abstract

In this work, the first experimental results of thermotropic liquid crystals used as phase change materials for thermal storage are presented. For that purpose, the n = 10 derivative from the family of 4′-n-alkoxybiphenyl-4-carboxylic acids has been prepared. Different techniques like polarized-light microscopy, differential scanning calorimetry, thermogravimetric analysis and rheological measurements have been applied for its characterization. Having a mesophase/isotropic transition temperature around 251 °C, a clearing enthalpy of 55 kJ/kg, a thermal heat capacity of around 2.4 kJ/kg and a dynamic viscosity lower than 0.6 Pas, this compound fulfills the main requirements for being considered as latent heat storage material. Although further studies on thermal stability are necessary, the results already obtained are both promising and encouraging since they demonstrate de viability of this new application of liquid crystals as thermal storage media. View Full-Text
Keywords: thermal storage; liquid crystals; phase change materials thermal storage; liquid crystals; phase change materials
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Bayón, R.; Coco, S.; Barcenilla, M.; Espinet, P.; Imbuluzqueta, G.; Hidalgo, J.; Rojas, E. Feasibility of Storing Latent Heat with Liquid Crystals. Proof of Concept at Lab Scale. Appl. Sci. 2016, 6, 121.

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