Mendoza Castellanos, Luis SebastiánGalindo Noguera, Ana LisbethGutiérrez Velásquez, Elkin I.Carrillo Caballero, Gaylord EnriqueSilva Lora, Electo EduardoMelian Cobas, Vladimir Rafael2020-10-302020-10-3020202020-10-04Mendoza Castellanos, L., Galindo Noguera, A., Gutiérrez Velásquez, E., Caballero, G., Silva Lora, E. and Melian Cobas, V., 2020. Mathematical modeling of a system composed of parabolic trough solar collectors integrated with a hydraulic energy storage system. Energy, 208, p.118255.0360-5442https://hdl.handle.net/20.500.12585/9509In this work we propose to model a 7.5 kWe power generation system, implementing a Parabolic Trough Collector system, coupled to an Organic Rankine Cycle (PTC/ORC) and a bladder-type hydraulic accumulator system. The purpose of the research is to evaluate the behavior of the hydraulic accumulation system made up of 22 bladder-type accumulators of 60 L each, which operates as a backup to provide continuity in the generation of electrical energy. The model allows evaluating and analyzing the loading and unloading behavior of a hydraulic accumulator system, for intermittent conditions of solar irradiation, wind speed, and ambient temperature. The results show that for a power deficit in the system of 0.5 kWe, the compensation time for the generation of electrical energy would be 1 h and 51 min and for a deficit of 7 kWe, the compensation time would be 4 min. The model was designed as a convenient tool for dimensioning and integrating various energy sources in hydraulic accumulation systems and will allow analyzing the behavior of hydraulic accumulators as an energy backup system.1. Introduction 2. Proposed system for electricity generation 3. Mathematical model of the parabolic trough collector system 4. ORC system modeling 5. Model of the hydraulic bladder-type accumulation system 5.1. Characterization of the pump and the variable displacement hydraulic motor 5.2. Characterization of the hydraulic bladder type accumulator 6. Control system for the hydraulic accumulation model 7. Analysis of results of the PTC/ORC system 8. Analysis of results of the PTC/ORC system operating with a hydraulic accumulator 9. Conclusions Credit author statement Declaration of competing interest Acknowledgements Referencesapplication/pdfenghttps://www.sciencedirect.com/science/article/abs/pii/S0360544220313621info:eu-repo/semantics/article10.1016/j.energy.2020.118255Hybrid power generationHydraulic accumulator systemParabolic trough collector systemHydraulic motorOrganic rankine cycleinfo:eu-repo/semantics/closedAccessUniversidad Tecnológica de BolívarRepositorio Universidad Tecnológica de Bolívar