Compatibility Study Between Synthetic Oil and Vitrified Wastes for Direct Thermal Energy Storage

Thomas Fasquelle 1 Quentin Falcoz 1 Pierre Neveu 1 Jérémie Walker 2 Gilles Flamant 1
1 PROMES - Procédés, Matériaux et Energie Solaire
2 CRRA - Centre de recherche Rhône-Alpes
Abstract : Compatibility tests were conducted between synthetic oil and potential solid filler materials in a thermocline tank built at the PROMES-CNRS laboratory. These experiments consisted of placing the oil and the solid materials together in small crucibles (2.3 L) and performing compatibility tests at 300 °C and accelerated ageing tests at 330 °C for 500 h. The mutual influence of the oil and the solid materials was assessed through different measurements: X-ray diffraction and scanning electron microscopy. The influence of the solid on the oil was assessed by measuring thermo-physical and chemical properties. While no significant degradation of the oil is measured at 300 °C, at 330 °C, an increase in the oil degradation rate was observed. Its density, thermal conductivity and specific heat did not change, but its viscosity showed a significant increase. However, after accelerated ageing tests at 330 °C, the oil still shows good heat transfer performance. The solid crystalline structure did not change during the test but some of the samples seemed to absorb oil.
Keywords : Thermal energy storage Compatibility Synthetic oil Cofalit Coal fly ashes Alumina
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Journal articles
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https://hal-univ-perp.archives-ouvertes.fr/hal-01887776
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Submitted on : Thursday, October 4, 2018 - 2:42:20 PM
Last modification on : Friday, March 29, 2019 - 1:55:15 AM

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UNIV-PERP | PROMES

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Thomas Fasquelle, Quentin Falcoz, Pierre Neveu, Jérémie Walker, Gilles Flamant. Compatibility Study Between Synthetic Oil and Vitrified Wastes for Direct Thermal Energy Storage. Waste and Biomass Valorization, Springer, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS, 2017, 8 (3), pp.621 - 631. ⟨10.1007/s12649-016-9622-1⟩. ⟨hal-01887776⟩

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