Open AccessStudy of an Integrated Tower Solar Energy Combined Cycle System with the Simultaneous Integration Solar Energy with Top and Bottom Cycle
Publication year - 2019
Publication title -
petroleum and chemical industry international
Language(s) - English
Resource type - Journals
ISSN - 2639-7536
DOI - 10.33140/pcii.02.04.03
Subject(s) - environmental science , solar energy , rankine cycle , exergy , solstice , photovoltaic system , process engineering , engineering , power (physics) , electrical engineering , physics , thermodynamics , astronomy , latitude
In this paper, based on a conventional integrated solar combined cycle system (ISCC), a novel integrated tower solarenergy combined cycle system (ITSCC) with the simultaneous integration the solar energy with top and bottom cycleof combined cycle system is proposed. The system models are developed and different system performance evaluationindices are proposed. Then in the condition of the same solar radiation the thermal performance of new system isanalyzed and compared with the reference ISCC system and gas-steam combined cycle (GTCC) system. Furthermore,the operating characteristics of the new system in the summer solstice are deeply investigated in consideration ofthe heat variation from direct solar radiation and the effect of the ambient temperature change on the solar collectorsystem. The efficiency of solar energy utilization and the thermodynamic properties of different systems are analyzed.The result shows that, in the summer solstice the natural gas input of new system is less 3.28% than that of GTCCsystem and the net output power is increased by 1.5%, the solar-to-electric efficiency and the exergy efficiency canachieve 27.3% and 28.4%, respectively. In addition, the annual performance of new system is also better than that ofthe reference system.