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

被引:41
|
作者
Laing, D. [1 ]
Steinmann, W. D. [1 ]
Viebahn, P. [1 ,4 ]
Graeter, F. [2 ]
Bahl, C. [3 ]
机构
[1] German Aerosp Ctr DLR, Inst Tech Thermodynam, D-70569 Stuttgart, Germany
[2] Flagsol GmbH, D-50678 Cologne, Germany
[3] Ed Zublin AG, D-70435 Stuttgart, Germany
[4] Wuppertal Inst Climate Environm & Energy, Wuppertal, Germany
关键词
thermal energy storage; solid media; concrete; modular operation concept; life cycle assessment; parabolic trough power plant;
D O I
10.1115/1.4001404
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
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%. [DOI: 10.1115/1.4001404]
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页数:6
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