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Solid Media Thermal Storage Development and Analysis of Modular Storage Operation Concepts for Parabolic Trough Power Plants

Laing, Doerte and Steinmann, Wolf-Dieter and Fiß, Michael and Tamme, Rainer and Brand, Thomas and Bahl, Carsten (2007) Solid Media Thermal Storage Development and Analysis of Modular Storage Operation Concepts for Parabolic Trough Power Plants. Journal of Solar Energy Engineering, 130 (1), 011006-1-011006-5. The American Society of Mechanical Engineers. ISSN 0199-6231.

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Abstract

Cost-effective integrated storage systems are important components for the accelerated market penetration of solarthermal power plants. Besides extended utilisation of the power block the main benefits of storage systems are improved efficiency of components, and facilitated integration into the electrical grids. For parabolic trough power plants using synthetic oil as the heat transfer medium, the application of solid media sensible heat storage is an attractive option in terms of investment and maintenance costs. For commercial oil trough technology, a solid media sensible heat storage system was developed and tested. One focus of the project was the cost reduction of the heat exchanger; the second focus lies in the energetic and exergetic analysis of modular storage operation concepts, including a cost assessment of these concepts. The results show that technically there are various interesting ways to improve storage performance. However, these efforts do not improve the economical aspect. Therefore the tube register with straight parallel tubes without additional structures to enhance heat transfer has been identified as the best option concerning manufacturing aspects and investment costs. The results of the energetic and exergetic analysis of modular storage integration and operation concepts show a significant potential for economic optimisation. An increase of more than 100 % in storage capacity or a reduction of more than factor 2 in storage size and therefore investment cost for the storage system was calculated. A complete economical analysis, including the additional costs for this concept on the solar field piping and control, still has to be performed.

Document Type:Article
Title:Solid Media Thermal Storage Development and Analysis of Modular Storage Operation Concepts for Parabolic Trough Power Plants
Authors:
AuthorsInstitution or Email of Authors
Laing, DoerteUNSPECIFIED
Steinmann, Wolf-DieterUNSPECIFIED
Fiß, MichaelUNSPECIFIED
Tamme, RainerUNSPECIFIED
Brand, ThomasEd. Züblin AG
Bahl, CarstenEd. Züblin AG
Date:June 2007
Journal or Publication Title:Journal of Solar Energy Engineering
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:130
Page Range:011006-1-011006-5
Publisher:The American Society of Mechanical Engineers
ISSN:0199-6231
Status:Published
Keywords:Thermal Energy Storage, Solid Media, Sensible Heat, Modular Operation Concept, Parabolic Trough Power Plant
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Thermische Energiespeicher (old)
Location: Stuttgart
Institutes and Institutions:Institute of Technical Thermodynamics > Thermal Process Technology
Deposited By: Dörte Laing
Deposited On:25 Feb 2008
Last Modified:15 Jan 2010 01:17

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