DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Thermal Energy Storage for Parabolic Trough Power Plants with Direct Steam Generation

Laing, Doerte and Bauer, Thomas and Lehmann, Dorothea and Bahl, Carsten (2009) Thermal Energy Storage for Parabolic Trough Power Plants with Direct Steam Generation. In: Conference Proceedings (DVD-R). Energy Sustainability 2009, 19.-23. Juli 2009, San Francisco, USA. ISBN 978-0-7918-3851-8

Full text not available from this repository.


For future parabolic trough plants direct steam generation in the absorber pipes is a promising option for reducing the costs of solar thermal power generation. These new solar thermal power plants require innovative storage concepts, where the two phase heat transfer fluid poses a major challenge. A three-part storage system is proposed where a phase change material (PCM) storage will be deployed for the two-phase evaporation, while concrete storage will be used for storing sensible heat, i.e. for preheating of water and superheating of steam. A pinch analysis helps to recognize interface constraints imposed by the solar field and the power block and describes a way to dimension the latent and sensible components. Laboratory tests of a PCM test module with approx. 140 kg NaNO3, applying the sandwich concept for enhancement of heat transfer, proved the expected capacity and power density. The concrete storage material for sensible heat was improved to allow the operation up to 500 °C for direct steam generation. A storage system with a total storage capacity of approx. 1 MWh is described, combining a PCM module and a concrete module, which will be tested in 2009 under real steam conditions around 100 bar.

Item URL in elib:https://elib.dlr.de/60593/
Document Type:Conference or Workshop Item (Paper)
Title:Thermal Energy Storage for Parabolic Trough Power Plants with Direct Steam Generation
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Laing, Doertedoerte.laing (at) dlr.deUNSPECIFIED
Bauer, Thomasthomas.bauer (at) dlr.deUNSPECIFIED
Lehmann, Dorotheadorothea.lehmann (at) dlr.deUNSPECIFIED
Bahl, Carstencarsten.bahl (at) zueblin.deUNSPECIFIED
Date:July 2009
Journal or Publication Title:Conference Proceedings (DVD-R)
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Thermal Energy Storage, Phase Change Material, Concrete, Parabolic Trough Power Plant, Direct Steam Generation, Storage System Design
Event Title:Energy Sustainability 2009
Event Location:San Francisco, USA
Event Type:international Conference
Event Dates:19.-23. Juli 2009
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E EV - Energy process technology (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Thermische Energiespeicher (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Laing, Dörte
Deposited On:17 Nov 2009 14:31
Last Modified:17 Nov 2009 14:31

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.