Performance Study of a Novel Integrated Solar Combined Cycle System

Liqiang Duan and Zhen Wang
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Liqiang Duan: Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, National Thermal Power Engineering & Technology Research Center, School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Zhen Wang: Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, National Thermal Power Engineering & Technology Research Center, School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

Energies, 2018, vol. 11, issue 12, 1-22

Abstract: Based on a traditional integrated solar combined cycle system, a novel integrated solar combined cycle (ISCC) system is proposed, which preferentially integrates the solar energy driven lithium bromide absorption refrigeration system that is used to cool the gas turbine inlet air in this paper. Both the Aspen Plus and EBSILON softwares are used to build the models of the overall system. Both the thermodynamic performance and economic performance of the new system are compared with those of the traditional ISCC system without the inlet air cooling process. The new system can regulate the proportions of solar energy integrated in the refrigerator and the heat recovery steam generator (HRSG) based on the daily meteorological data, and the benefits of the solar energy integrated with the absorption refrigeration are greater than with the HRSG. The results of both the typical day performance and annual performance of different systems show that the new system has higher daily and annual system thermal efficiencies (52.90% and 57.00%, respectively), higher daily and annual solar photoelectric efficiencies (31.10% and 22.31%, respectively), and higher daily and annual solar photoelectric exergy efficiencies (33.30% and 23.87%, respectively) than the traditional ISCC system. The solar energy levelized cost of electricity of the new ISCC system is 0.181 $/kW·h, which is 0.061 $/kW·h lower than that of the traditional ISCC system.

Keywords: ISCC; inlet air cooling; LiBr; thermodynamic performance; direct steam generation technology; economic performance (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: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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