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Thermal Energy Storage for Concentrated Solar Power - State of the Art and Innovative Concepts

Laing, Doerte (2012) Thermal Energy Storage for Concentrated Solar Power - State of the Art and Innovative Concepts. 2012 IFNA World Congress, 25. Juni - 1. Juli 2012, Athen, Griechenland.

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Abstract

The integration of thermal energy storage systems enables CSP-plants to provide dispatchable electricity. The adaptation of storage systems both to the solar energy receiver system and the power cycle of the plant are essential for the effective utilization of storage capacity for CSP applications. Three different physical processes can be applied for energy storage: sensible heat storage in solid or liquid media, latent heat storage using phase change material and thermochemical energy storage. Different technical concepts have been developed for the implementation of the different processes, showing different states of maturity. Today's commercial CSP plants apply sensible heat energy storage using either molten salt or pressurized water as storage media. Two tank molten salt technology has reached thermal capacities in the GWh-range and temperatures up to 565 °C. The feasibility of solid media sensible heat energy storage has been proven by using concrete. For CSP-systems using air as heat transfer medium, packed bed storage units using solid storage media represent an attractive solution, allowing operation up to 800 °C. Latent heat storage concepts are preferred for applications using steam as working fluid, since here heat transfer processes occur within a narrow temperature interval. Thermochemical energy storage concepts are in an earlier state of development, various concepts are investigated. The presentation gives an overview of the various concepts developed for thermal energy storage in CSP plants and describes the state of the art and the recent advancements.

Item URL in elib:https://elib.dlr.de/79682/
Document Type:Conference or Workshop Item (Speech)
Title:Thermal Energy Storage for Concentrated Solar Power - State of the Art and Innovative Concepts
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Laing, Doertedoerte.laing (at) dlr.deUNSPECIFIED
Date:June 2012
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:thermal energy storage, direct steam generation, latent heat storage, phase change material, concrete, CSP
Event Title:2012 IFNA World Congress
Event Location:Athen, Griechenland
Event Type:international Conference
Event Dates:25. Juni - 1. Juli 2012
Organizer:University of Athens
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Energy-efficient Processes (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Thermochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Laing, Dörte
Deposited On:18 Dec 2012 17:39
Last Modified:18 Dec 2012 17:39

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