Premium
Parameter and layout optimization of a high temperature solar combined cycle using low temperature thermal storage
Author(s) -
Gao Wei,
Li Hongzhi,
Nie Peng,
Zhang Yifang,
Yang Yu,
Wang Yueming,
Yao Mingyu
Publication year - 2017
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.12564
Subject(s) - thermal energy storage , organic rankine cycle , thermal , supercritical fluid , work (physics) , concentrated solar power , process engineering , nuclear engineering , materials science , degree rankine , environmental science , thermodynamics , atmospheric temperature range , thermal efficiency , rankine cycle , power (physics) , mechanical engineering , chemistry , electricity generation , engineering , physics , organic chemistry , combustion
A novel high temperature solar supercritical carbon dioxide (S‐CO 2 ) and organic Rankine cycle (ORC) combined power system with low temperature thermal storage is introduced. The heat releasing of the S‐CO 2 can be used as the heat source of the ORC. This system could keep high thermal efficiency, whereas thermal storage temperature is far lower than the maximum temperature of the system. Previous work has proved that the system efficiency can be kept at 38% when the thermal storage temperature is in the range of 220∼230°C. Basic relationship among system efficiency, power ratio and thermal storage temperature are analyzed. The key parameters of the system are optimized under certain constraints. Three possible improved layouts of this system are discussed in the end. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1234–1243, 2017