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Article
Affiliation(s)

1. Bordeaux University, I2M UMR CNRS 5295, Esplanade des Arts et Métiers, Talence 33 405, France
2. PLACAMAT, 87 Avenue du Docteur Schweitzer, Pessac Cedex 33608, France
3. ICMCB, 87 Avenue du Docteur Schweitzer, Pessac 33608, France
4. UMR Université de Lorraine - CNRS 7198, IJL, 27 rue Philippe Séguin, BP 21042, Épinal, France
5. CICenergiGUNE, Parque Tecnológico de Álava, Albert Einstein, 48, Vitoria-Gasteiz 01510, Espagne
6. INP Bordeaux, I2M UMR CNRS 5295, 16 avenue Pey-Berland, Pessac 33607, France

ABSTRACT

A LiBr/LiOH non-eutectic mixture shows a potentially outstanding heat energy density of 800 J/g at a constant temperature, which makes it a very promising candidate for heat storage applications around 300 °C. However, salt-based phase change materials are known for their too low thermal conductivity which can question the thermal storage systems effective feasibility. The objective here is to infiltrate a carbon felt of high porosity (> 93%) with the LiBr/LiOH mixture to anticipate this deficiency. The device has to be adapted according to the properties and the characteristics of the studied storage and host materials. The developed procedure for the carbon felt infiltration with the synthesized binary system is presented. The optimised working conditions allow (1) minimizing the interaction time duration between the quartz tube and the salt-based mixture and, (2) verifying the good chemical compatibility of the mixture with the host matrix after infiltration.

KEYWORDS

Liquid infiltration, carbon felt, LiBr/LiOH-based mixture, chemical compatibility.

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