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Comparative Performance Assessment of 300 MW Solar‐Coal Hybrid Power Generation System Under Different Integration Mechanisms
Author(s) -
Shagdar Enkhbayar,
Shuai Yong,
Lougou Bachirou Guene,
Jagvanjav Tseyen-Oidov,
Wang Fuqiang,
Tan Heping
Publication year - 2021
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.202000628
Subject(s) - heliostat , coal , process engineering , cost of electricity by source , thermal power station , electricity generation , environmental science , solar energy , photovoltaic system , power station , boiler (water heating) , nuclear engineering , thermal efficiency , engineering , automotive engineering , power (physics) , waste management , electrical engineering , chemistry , thermodynamics , physics , organic chemistry , combustion
Solar−coal hybrid power generation (SCHPG) system is one of the interesting solutions for solar power generation. This research aims to find a more viable integration mechanism of solar energy into a coal‐fired thermal power plant in terms of techno‐economic and ecology perspective. Performance of the 300 MW SCHPG system in the nominal and part‐load condition is analyzed under three different integration mechanisms. Numerical simulation of 300 MW SCHPG system is investigated under four different cases using a thermal balance approach. Operation modes of fuel‐saving (FS) and power‐boosting (PB) are considered for each case. Among the proposed cases, Case 4 is obtained as a good operation performance, which is recommended as the main case. The solar energy in Case 4 is used for evaporating feedwater and steam superheating, and steam reheating. Results show that the optimal aperture area of the heliostat solar field is 330 330 m 2 , and the minimum levelized cost of electricity is 0.1847 USD kWh −1 . In Case 4, thermal efficiency is increased by 7.19% with standard coal consumption reduced by 45.3 g kWh −1 compared to a reference power plant. In the SCHPG system, coal consumption is reduced by 26.8 tons h −1 in FS mode, whereas power output is increased 30 MW h −1 in PB mode.