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

来源：

ENERGY | 2015年 / 79卷

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

页码：149 / 162

页数：14

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