Publicación: Latent thermal energy storage for solar process heat applications at medium-high temperatures – A review
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Fecha
2019-11
Autores
Crespo, Alicia
Barreneche, Camila
Ibarra Mollá, Mercedes
Platzer, Werner
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Derechos de acceso
info:eu-repo/semantics/openAccess
Licencia Creative Commons
http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
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Editor
Elsevier
Resumen
Solar thermal energy has the potential to cover the heat demands of industrial processes. However, there may be a time mismatch between energy supplied by the solar field and the process demand. In this case, a thermal energy storage (TES) allows the use of heat at hours without solar irradiation available. Thermal energy storage (TES) for solar hot water or heating systems using low temperatures have been optimized since many decades and are in a mature stage. Developments at high temperatures (above 200 °C) for CSP applications have also been deeply studied. However, until this present paper, limited attention has been paid to TES for solar thermal industrial applications at medium-high temperatures (120 - 400°C), where there is a potentially huge demand. When discussing TES several aspects have to be discussed: the energy demand that TES is going to be designed to supply, the material where the energy will be stored and the performance of the TES system which includes not only the material but also tanks, piping and connections.
In this review, food, brewery and chemical industries were identified as the industries with higher potential in which TES and solar energy could be integrated. Heat integration methodologies have been reviewed to optimize the use of the solar energy by the industrial processes.
Regarding the material, latent heat storage or phase change materials (PCM) were selected because they are a very promising type of storage to be integrated in thermal industrial processes, although the state of the art of latent heat thermal storage (LHTES) systems is still far from broad commercialization. Until now, no reviews of latent heat storage for industrial applications at medium-high temperatures (120 - 400 °C) have been published. Therefore, literature related to PCM and LHS systems using PCM materials to be used in industrial thermal processes is here reviewed in order to have a general overview of the available technologies for their integration together with solar thermal energy in industrial processes at both experimental and numerical level. More than 100 potential PCMs for heat storage applications in the range of temperatures 120 - 400 °C have been found.
Inorganic eutectic compositions are the group with more potentially available PCM for these applications, with values of heat of fusion between 74 and 535 kJ/kg.
Finally, the works related to the performance of the system from the experimental and modelling point of view were presented. The review of experimental TES systems which include PCM in the studied range of temperatures 120 - 400 °C showed that most of the experimental set-ups were developed for direct steam generation for CSP applications. Regarding numerical modelling, the type of configuration more simulated is the shell and tube configuration.
Descripción
Este es el manuscrito aceptado del artículo. La versión registrada fue publicada por primera vez en Solar Energy, 192, 3-34, está disponible en línea en el sitio web del editor: https://doi.org/10.1016/j.solener.2018.06.101
Categorías UNESCO
Palabras clave
Phase change materials, thermal industrial processes, solar process heat, medium-high temperatures
Citación
Crespo, A., Barreneche, C., Ibarra, M., & Platzer, W. (2019). Latent thermal energy storage for solar process heat applications at medium-high temperatures – A review. Solar Energy, 192, 3-34. https://doi.org/10.1016/J.SOLENER.2018.06.101
Crespo, A., Barreneche, C., Ibarra, M., & Platzer, W. (2019). Latent thermal energy storage for solar process heat applications at medium-high temperatures – A review. Solar Energy, 192, 3-34. https://doi.org/10.1016/J.SOLENER.2018.06.101
Centro
Facultades y escuelas::E.T.S. de Ingenieros Industriales
Departamento
Ingeniería Energética