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), . The American Society of Mechanical Engineers. ISSN 0199-6231.
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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.
|Title:||Solid Media Thermal Storage Development and Analysis of Modular Storage Operation Concepts for Parabolic Trough Power Plants|
|Journal or Publication Title:||Journal of Solar Energy Engineering|
|In ISI Web of Science:||Yes|
|Publisher:||The American Society of Mechanical Engineers|
|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|
|DLR - Research area:||Energy|
|DLR - Program:||E SF - Solar research|
|DLR - Research theme (Project):||E - Thermische Energiespeicher (old)|
|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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