Pressure drops, heat transfer coefficient, costs and power block design for direct storage parabolic trough power plants running molten salts

Autor: Thomas Fasquelle, Hugo G. Silva, Telma Lopes
Přispěvatelé: EMIÁTOMO, Universidade de Évora, Institut universitaire des systèmes thermiques industriels (IUSTI), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Fasquelle, Thomas
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Materials science
Power station
020209 energy
Nuclear engineering
[SPI.MECA.MEFL] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]
02 engineering and technology
Heat transfer coefficient
Heat Transfer Fluid
7. Clean energy
[SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]
Operating temperature
Concentrated Solar Power
Concentrated solar power
0202 electrical engineering
electronic engineering
information engineering
Parabolic trough
0601 history and archaeology
Molten salt
Cost of electricity by source
Solar power
Molten Salts
[SPI.MECA.THER] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
060102 archaeology
Renewable Energy
Sustainability and the Environment
business.industry
06 humanities and the arts
Parabolic Troughs
System Advisor Model
[SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
business
Zdroj: Renewable Energy
Renewable Energy, Elsevier, 2021, 163, pp.530-543
Renewable Energy, 2021, 163, pp.530-543
ISSN: 0960-1481
1879-0682
Popis: International audience; Direct circulation of molten salts in the solar field of parabolic trough solar power plants may be a possible breakthrough to decrease their levelized cost of electricity. While prototypes are being erected around the world, this study addresses the main concerns and changes that are related to the replacement of thermal oils by molten salts, i.e. pressure drops, heat transfer coefficient, anti-freezing solutions, cost and power block design. It combines: 1) an analytical comparison of both technologies with respect to pressure drops and heat transfers; 2) simulations of a 50 MWe/7.5 hours-of-storage power plant, using NREL’s SAM software, providing details on the dynamics of the outputs and parasitics. It has been observed the following: 1) pressure drops in the solar field are smaller running molten salts instead of thermal oil, thanks to higher operating temperature ranges; 2) HitecXL molten salt leads to lower electricity consumption than Therminol VP-1 oil and Solar Salt (parasitics); 3) a 6.3 % reduction of the levelized cost of electricity when running HitecXL, ~14.80 c€/kWh, instead of Therminol VP-1, ~15.80 c€/kWh; 4) simpler power block designs can be considered for the higher operating temperatures of molten salts, resulting in higher efficiencies and/or cheaper power blocks.
Databáze: OpenAIRE
Externí odkaz: