2026-04-14T08:29:24Zhttps://recercat.cat/oai/request

oai:recercat.cat:10459.1/4653472025-09-15T18:30:56Zcom_2072_3622col_2072_479130

Thermal energy storage for direct steam generation concentrating solar power plants: Concept and materials selection Prieto, Cristina Cabeza, Luisa F. Pavón Moreno, M. Carmen Palomo, Elena Direct steam generation (DSG) Concentrating solar power (CSP) Thermal energy storage (TES) Long-term Phase change material (PCM) Direct steam generation (DSG) concentrating solar power (CSP) plants uses water as heat transfer fluid, and it is a technology available today. It has many advantages, but its deployment is limited due to the lack of an adequate long-term thermal energy storage (TES) system. This paper presents a new TES concept for DSG CSP plants. This system is based on three blocks, a saturated block based on phase change materials, an overheating block that elevates the vapor temperature of a heat transfer fluid to the desired values, and a preheating block that increases the temperature difference between a cold tank and a hot tank of a non-phase change thermal storage material. After a deep selection and characterization process, the material to be used is LiOH/KOH, since although it has the disadvantage of high corrosion, the identified advantages overcome it as an ideal PCM for this process. This work was partially funded by the Ministerio de Ciencia e Innovacion ´ de Espana ˜ [(TED2021-132216A-I00) (ITC-20111061- FEDER-Innterconecta-Composol), (PID2021-123511OB-C31 - MCIU/ AEI/FEDER, UE), and (RED2022-134219-T)]. The authors at University of Lleida would like to thank the Catalan Government for the quality accreditation given to their research group GREiA (2017 SGR 1537). GREiA is a certified agent TECNIO in the category of technology developers from the Government of Catalonia. This work is partially supported by ICREA under the ICREA Academia programme. 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://doi.org/10.1016/j.est.2024.110618 2352-152X https://hdl.handle.net/10459.1/465347 eng info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-123511OB-C31/ES/ESTRATEGIAS DE DESCARBONIZACION QUE INTEGRAN EL ALMACENAMIENTO DE ENERGIA TERMICA/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/RED2022-134219-T/ES/ALMACENAMIENTO DE ENERGIA TERMICA/ Reproducció del document publicat a https://doi.org/10.1016/j.est.2024.110618 Journal of Energy Storage, 2024, vol. 83, 110618 cc-by (c) Cristina Prieto et al., 2024 Attribution 4.0 International info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Elsevier