2026-04-17T13:11:10Zhttps://recercat.cat/oai/request

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

00925njm 22002777a 4500 dc Prieto, Cristina author Cabeza, Luisa F. author Pavón Moreno, M. Carmen author Palomo, Elena author 2024 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. Direct steam generation (DSG) Concentrating solar power (CSP) Thermal energy storage (TES) Long-term Phase change material (PCM) Thermal energy storage for direct steam generation concentrating solar power plants: Concept and materials selection