Mathematical modeling of a system composed of parabolic trough solar collectors integrated with a hydraulic energy storage system

Luis Sebastián Mendoza Castellanos, Ana Lisbeth Galindo Noguera, Elkin I. Gutiérrez Velásquez, Gaylord Enrique Carrillo Caballero, Electo Eduardo Silva Lora, Vladimir Rafael Melian Cobas

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

In 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.

Original languageEnglish
Article number118255
JournalEnergy
Volume208
DOIs
StatePublished - 1 Oct 2020

Keywords

  • Hybrid power generation
  • Hydraulic accumulator system
  • Hydraulic motor
  • Organic rankine cycle
  • Parabolic trough collector system

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