TY - GEN
T1 - A general model for techno-economic analysis of CSP plants with thermochemical energy storage systems
AU - Peng, Xinyue
AU - Maravelias, Christos T.
AU - Root, Thatcher W.
N1 - Publisher Copyright:
© 2017 Author(s).
PY - 2017/6/27
Y1 - 2017/6/27
N2 - Thermochemical energy storage (TCES), with high energy density and wide operating temperature range, presents a potential solution for CSP plant energy storage. We develop a general optimization based process model for CSP plants employing a wide range of TCES systems which allows us to assess the plant economic feasibility and energy efficiency. The proposed model is applied to a 100 MW CSP plant employing ammonia or methane TCES systems. The methane TCES system with underground gas storage appears to be the most promising option, achieving a 14% LCOE reduction over the current two-tank molten-salt CSP plants. For general TCES systems, gas storage is identified as the main cost driver, while the main energy driver is the compressor electricity consumption. The impacts of separation and different reaction parameters are also analyzed. This study demonstrates that the realization of TCES systems for CSP plants is contingent upon low storage cost and a reversible reaction with proper reaction properties.
AB - Thermochemical energy storage (TCES), with high energy density and wide operating temperature range, presents a potential solution for CSP plant energy storage. We develop a general optimization based process model for CSP plants employing a wide range of TCES systems which allows us to assess the plant economic feasibility and energy efficiency. The proposed model is applied to a 100 MW CSP plant employing ammonia or methane TCES systems. The methane TCES system with underground gas storage appears to be the most promising option, achieving a 14% LCOE reduction over the current two-tank molten-salt CSP plants. For general TCES systems, gas storage is identified as the main cost driver, while the main energy driver is the compressor electricity consumption. The impacts of separation and different reaction parameters are also analyzed. This study demonstrates that the realization of TCES systems for CSP plants is contingent upon low storage cost and a reversible reaction with proper reaction properties.
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U2 - 10.1063/1.4984443
DO - 10.1063/1.4984443
M3 - Conference contribution
AN - SCOPUS:85023627370
T3 - AIP Conference Proceedings
BT - SolarPACES 2016
PB - American Institute of Physics Inc.
T2 - 22nd International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2016
Y2 - 11 October 2016 through 14 October 2016
ER -