Annual performance analysis and optimization of a solar tower aided coal-fired power plant

Show simple item record Li, Chao Zhai, Rongrong Yang, Yongping Patchigolla, Kumar Oakey, John E. Turner, Peter 2019-01-10T20:17:09Z 2019-01-10T20:17:09Z 2019-01-10
dc.identifier.citation Chao Li, Rongrong Zhai, Yongping Yang, et al., Annual performance analysis and optimization of a solar tower aided coal-fired power plant. Applied Energy, Volume 237, 1 March 2019, Pages 440-456 en_UK
dc.identifier.issn 0306-2619
dc.description.abstract The integration of solar energy into coal-fired power plants has been proven as a potential approach in the utilization of solar energy to reduce coal consumption. Moreover, solar augmentation offers low cost and low risk alternatives to stand-alone solar thermal power plants. In this study, the annual performance of a solar tower aided coal-fired power (STACP) system is investigated, and the influence of thermal storage system capacity on the annual solar generating power and annual solar-to-electricity efficiency is explored. The thermal storage system capacity is optimized to obtain the lowest levelized cost of electricity (LCOE). At the same time, the influence and sensitivity of several important economic factors are explored and assessed. Results demonstrate that compared to a coal-fired power system, the reduction in the annual average coal consumption rate of the STACP system with high direct normal irradiance (DNI), medium DNI, and low DNI are 5.79, 4.52, and 3.22 g/kWh, respectively. At a minimum, the annual coal consumption can be reduced by 14,000 t in a 600 MWe power generation unit. Because the same solar field is considered under different DNI conditions, the LCOE in the high DNI, medium DNI, and low DNI scenarios are all fairly similar (6.37, 6.40, and 6.41 ¢/kWh, respectively). When the solar multiple is 3.0, the optimal thermal storage capacity of the STACP system, with high, medium, and low DNIs are 6.73, 4.42, and 2.21 h, respectively. The sensitivity analysis shows that the change in economic parameters exerts more influence on the STACP system with the high DNI compared with the other two scenarios. en_UK
dc.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International *
dc.rights.uri *
dc.subject Annual performance en_UK
dc.subject Solar tower aided coal-fired power plant en_UK
dc.subject Solar multiple en_UK
dc.subject Thermal energy storage capacity en_UK
dc.subject Optimization en_UK
dc.title Annual performance analysis and optimization of a solar tower aided coal-fired power plant en_UK
dc.type Article en_UK

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