Thermal and Exergy Efficiency Analysis of a Solar-driven Closed Brayton Power Plant with Helium & s-CO2 as Working Fluids

Arnaiz del Pozo, Carlos and Sánchez Orgaz, Susana and Rodríguez Martín, Javier and Jiménez Alvaro, Ángel and López Paniagua, Ignacio and González Fernández, M. Celina and Nieto Carlier, Rafael (2019). Thermal and Exergy Efficiency Analysis of a Solar-driven Closed Brayton Power Plant with Helium & s-CO2 as Working Fluids. In: "17th International Conference on Renewable Energies and Power Quality (ICREPQ’19)", 10-12 abr 2019, Tenerife, España. ISBN 978-84-09-08211-7. pp. 383-389. https://doi.org/10.24084/repqj17.319.

Description

Title: Thermal and Exergy Efficiency Analysis of a Solar-driven Closed Brayton Power Plant with Helium & s-CO2 as Working Fluids
Author/s:
  • Arnaiz del Pozo, Carlos
  • Sánchez Orgaz, Susana
  • Rodríguez Martín, Javier
  • Jiménez Alvaro, Ángel
  • López Paniagua, Ignacio
  • González Fernández, M. Celina
  • Nieto Carlier, Rafael
Item Type: Presentation at Congress or Conference (Article)
Event Title: 17th International Conference on Renewable Energies and Power Quality (ICREPQ’19)
Event Dates: 10-12 abr 2019
Event Location: Tenerife, España
Title of Book: International Conference on Renewable Energy and Power Quality Journal (ICREPQ'19)
Date: 2019
ISBN: 978-84-09-08211-7
Subjects:
Freetext Keywords: Helium; Closed Brayton; solar thermal; exergy; supercritical CO2
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Energética
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Solar Thermal Energy power plants operating with traditional steam Rankine cycles have a low thermal and exergy efficiency. An attractive pathway to increase the competitiveness of this technology is to investigate Closed Brayton cycles working with different fluids with desirable properties that show potential for improving their efficiency In this work a solar driven regenerative Brayton cycle is studied employing two different working fluids: Helium and supercritical CO2. The cycle efficiencies are determined for different turbine inlet temperatures and for the optimal compressor pressure ratios. Additionally, an exergy analysis breakdown of the different plant components is shown for each case, while the solar field sizes and working fluid flows are calculated for a fixed gas turbine output.

More information

Item ID: 63268
DC Identifier: http://oa.upm.es/63268/
OAI Identifier: oai:oa.upm.es:63268
DOI: 10.24084/repqj17.319
Official URL: http://www.icrepq.com/papers-icrepq.html
Deposited by: Memoria Investigacion
Deposited on: 21 Oct 2020 12:57
Last Modified: 21 Oct 2020 12:57
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