0
Research Papers

Economic Analysis and Life Cycle Assessment of Concrete Thermal Energy Storage for Parabolic Trough Power Plants

[+] Author and Article Information
D. Laing, W. D. Steinmann

Institute of Technical Thermodynamics, German Aerospace Center (DLR), Pfaffenwaldring 38-40, Stuttgart 70569, Germanydoerte.laing@dlr.de

P. Viebahn1

Institute of Technical Thermodynamics, German Aerospace Center (DLR), Pfaffenwaldring 38-40, Stuttgart 70569, Germanydoerte.laing@dlr.de

F. Gräter

 Flagsol GmbH, 50678 Cologne, Germany

C. Bahl

 Ed. Züblin AG, 70435 Stuttgart, Germany

WANDA (“Precommercial development of the WESPE storage technology for use in ANDASOL-type power plants” (1)), project partly funded by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU).

1

Also at the Wuppertal Institute for Climate, Environment, and Energy.

J. Sol. Energy Eng 132(4), 041013 (Oct 12, 2010) (6 pages) doi:10.1115/1.4001404 History: Received November 11, 2008; Revised March 11, 2009; Published October 12, 2010; Online October 12, 2010

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. One important aspect in storage development is the storage integration into the power plant. A modular operation concept for thermal storage systems was previously suggested by DLR, showing an increase in storage capacity of more than 100%. However, in these investigations, the additional costs needed to implement this storage concept into the power plant, such as for extra piping, valves, pumps, and control, had not been considered. These aspects are discussed in this paper, showing a decrease in levelized energy costs with a modular storage integration of 2–3%. In a life cycle assessment a comparison of an AndaSol-I type solar thermal power plant with the original two-tank molten salt storage and with a “hypothetical” concrete storage shows an advantage of the concrete storage technology concerning environmental impacts. The environmental impacts of the hypothetical concrete based AndaSol-I decreased by 7%, considering 1 kW h of solar electricity delivered to the grid. Regarding only the production of the power plant, the emissions decreased by 9.5%.

FIGURES IN THIS ARTICLE
<>
Copyright © 2010 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 3

Modular concept for discharging (SH, SG, PH, and RH)

Grahic Jump Location
Figure 4

Calculated electric work provided during storage operation of a 50 MW plant

Grahic Jump Location
Figure 5

Additional solar field components for collector loops (shown in bold print) for modular charging

Grahic Jump Location
Figure 6

Additional power block components (in bold printed lines and shaded)

Grahic Jump Location
Figure 7

Environmental impacts caused by the construction of the original molten salt based AndaSol-I

Grahic Jump Location
Figure 8

Environmental impacts caused by the construction of the hypothetical concrete based AndaSol-I

Grahic Jump Location
Figure 1

Scheme of the reference concept for solar thermal power plant with basic concept for integrated storage system

Grahic Jump Location
Figure 2

Comparison reference concept (left) with modular concept for charging (right)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In