Optimization of carbon-capture-enabled coal-gas-solar power generation

被引:41
作者
Brodrick, Philip G. [1 ]
Kang, Charles A. [1 ]
Brandt, Adam R. [1 ]
Durlofsky, Louis J. [1 ]
机构
[1] Stanford Univ, Dept Energy Resources Engn, Stanford, CA 94305 USA
关键词
Optimization; Carbon capture; Solar thermal; Natural gas combined cycle; TROUGH EOR SYSTEM; CO2; CAPTURE; JOINT OPTIMIZATION; ENERGY; PERFORMANCE; ELECTRICITY; STORAGE; PLANT;
D O I
10.1016/j.energy.2014.11.003
中图分类号
O414.1 [热力学];
学科分类号
摘要
Computational optimization is used to determine the optimal design and time-varying operations of a carbon dioxide capture retrofit to a coal-fired power plant. The retrofit consists of an amine-based temperature-swing absorption system, to which process steam is supplied from an auxiliary unit. Two candidate auxiliary heat sources are explored: natural gas and solar thermal. The NPV (net present value) of the retrofitted facility is maximized to determine which auxiliary system is preferable, under a variety of economic conditions. Optimized NPV is found to be most sensitive to the price of natural gas and the electricity price. At an 8% real discount rate, without renewable energy incentives, natural gas prices must be high (in excess of 10 USD/GJ) for a solar thermal design to be preferable, and electricity prices must reach approximate to 55 USD/MWh in order for solar-thermal-based designs to have a positive NPV. Incentives such as investment tax credits and solar power purchase agreements can make solar-thermal-based designs preferable to natural-gas-based designs under certain circumstances. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:149 / 162
页数:14
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