Dynamic Optimization of a Hybrid System of Energy-Storing Cryogenic Carbon Capture and a Baseline Power Generation Unit
Keywords
Carbon capture, energy storage, power grid, optimization
Abstract
Recently promulgated regulations of the US Environmental Protection Agency (EPA) aggressively limit CO2 emissions from the US power industry. Carbon capture and increased utilization of renewable energy sources are viable approaches to reduce CO2 emissions from the power industry. Cryogenic carbon capture considered in this study is a post-combustion CO2 removal system that separates CO2 from the flue gas by desublimation. In this investigation, a hybrid system of cryogenic carbon capture and a baseline fossil-fueled power generation unit are optimized with a framework to mathematically represent this hybrid system. Optimization of this hybrid system results in meeting the electricity demand through a combination of coal, gas, and wind power sources with a priority given to wind power for utilization. A comparison of the cost associated with operating the steam turbine as a baseline or load-following unit is also made. A significant decrease in the cycling cost associated with load-following of the coal-fired power plant is observed when it operates as a baseline unit. The decrease in the cycling costs is 82% and 85%, respectively, for when wind power is utilized in meeting the electricity demand and when it is not. The saving in the cycling costs is attributed to the energy storage of cryogenic carbon capture.
Original Publication Citation
Seyed Mostafa Safdarnejad, John D. Hedengren, Larry L. Baxter, Dynamic optimization of a hybrid system of energy-storing cryogenic carbon capture and a baseline power generation unit, Applied Energy, Volume 172, 15 June 2016, Pages 66-79, ISSN 0306-2619, http://dx.doi.org/10.1016/j.apenergy.2016.03.074.
BYU ScholarsArchive Citation
Safdarnejad, Seyed Mostafa; Hedengren, John; and Baxter, Larry Lin, "Dynamic Optimization of a Hybrid System of Energy-Storing Cryogenic Carbon Capture and a Baseline Power Generation Unit" (2016). Faculty Publications. 1663.
https://scholarsarchive.byu.edu/facpub/1663
Document Type
Peer-Reviewed Article
Publication Date
2016-06-15
Permanent URL
http://hdl.lib.byu.edu/1877/3603
Publisher
Elsevier
Language
English
College
Ira A. Fulton College of Engineering and Technology
Department
Chemical Engineering
Copyright Use Information
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