Phase Change Material Selection for Thermal Energy Storage at High Temperature Range between 210 °C and 270 °C

José Miguel Maldonado, Margalida Fullana-Puig, Marc Martín, Aran Solé, Ángel G. Fernández, Alvaro De Gracia and Luisa F. Cabeza
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José Miguel Maldonado: GREiA Research Group, INSPIRES Research Centre, Universitat de Lleida, Pere de Cabrera s/n, 25001 Lleida, Spain
Margalida Fullana-Puig: GREiA Research Group, INSPIRES Research Centre, Universitat de Lleida, Pere de Cabrera s/n, 25001 Lleida, Spain
Marc Martín: GREiA Research Group, INSPIRES Research Centre, Universitat de Lleida, Pere de Cabrera s/n, 25001 Lleida, Spain
Aran Solé: Department of Mechanical Engineering and Construction, Universitat Jaume I, Av. Vicent Sos Baynat, s/n, 12071 Castellón de la Plana, Spain
Ángel G. Fernández: Energy Development Center, University of Antofagasta, Av. Universidad de Antofagasta, 02800 Antofagasta, Chile
Alvaro De Gracia: GREiA Research Group, INSPIRES Research Centre, Universitat de Lleida, Pere de Cabrera s/n, 25001 Lleida, Spain
Luisa F. Cabeza: GREiA Research Group, INSPIRES Research Centre, Universitat de Lleida, Pere de Cabrera s/n, 25001 Lleida, Spain

Energies, 2018, vol. 11, issue 4, 1-13

Abstract: The improvement of thermal energy storage systems implemented in solar technologies increases not only their performance but also their dispatchability and competitiveness in the energy market. Latent heat thermal energy storage systems are one of those storing methods. Therefore, the need of finding the best materials for each application becomes an appealing research subject. The main goal of this paper is to find suitable and economically viable materials able to work as phase change material (PCM) within the temperature range of 210–270 °C and endure daily loading and unloading processes in a system with Fresnel collector and an organic Rankine cycle (ORC). Twenty-six materials have been tested and characterized in terms of their thermophysical conditions, thermal and cycling stability, and health hazard. Two materials out of the 26 candidates achieved the last stage of the selection process. However, one of the two finalists would require an inert working atmosphere, which would highly increase the cost for the real scale application. This leads to a unique suitable material, solar salt (40 wt % KNO 3 /60 wt % NaNO 3 ).

Keywords: thermal energy storage (TES); Fresnel collector; thermal stability; cycling stability; thermophysical properties; health hazard; myo-inositol; solar salt; infrared spectroscopy (IR); differential scanning calorimetry (DSC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

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