Study on the Coupling Effect of a Solar-Coal Unit Thermodynamic System with Carbon Capture

Jixuan Wang, Wensheng Liu, Xin Meng, Xiaozhen Liu, Yanfeng Gao, Zuodong Yu, Yakai Bai and Xin Yang
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Jixuan Wang: School of Water Conservancy and Electric Power, Hebei University of Engineering, Handan 056000, China
Wensheng Liu: School of Water Conservancy and Electric Power, Hebei University of Engineering, Handan 056000, China
Xin Meng: School of Water Conservancy and Electric Power, Hebei University of Engineering, Handan 056000, China
Xiaozhen Liu: Electronic and Information Engineering, Handan Polytechnic College, Handan 056000, China
Yanfeng Gao: School of Water Conservancy and Electric Power, Hebei University of Engineering, Handan 056000, China
Zuodong Yu: School of Water Conservancy and Electric Power, Hebei University of Engineering, Handan 056000, China
Yakai Bai: Key Laboratory of Solar Thermal Energy and Photvoltaic System of Chinese Academy of Science, Institute of Electrical Engineering, No. 6 Beiertiao, Zhongguancun, Beijing 100190, China
Xin Yang: School of Water Conservancy and Electric Power, Hebei University of Engineering, Handan 056000, China

Energies, 2020, vol. 13, issue 18, 1-14

Abstract: Based on the structural theory of thermo-economics, a 600 MW unit was taken as an example. An integration system which uses fuel gas heat and solar energy as a heat source for post-combustion carbon capture was proposed. The physical structure sketch and productive structure sketch were drawn and a thermo-economics model and cost model based on the definition of fuel-product were established. The production relation between units was analyzed, and the composition and distribution of the exergy cost and thermo-economic cost of each unit were studied. Additionally, the influence of the fuel price and equipment investment cost of the thermo-economic cost for each product was studied. The results showed that the main factors affecting the unit cost are the fuel exergy cost, component exergy efficiency, and irreversible exergy cost of each unit, and the main factors affecting the thermo-economics cost are the specific irreversible exergy cost and investment exergy cost. The main factors affecting the thermal economics of solar energy collectors and low-pressure economizers are the invested exergy cost, negentropy exergy cost, and irreversible exergy cost of each unit.

Keywords: structural theory; carbon capture; flue gas heat; parabolic trough collector field; exergetic cost; thermo-economic cost (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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