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|Title:||Performance analysis of a solar-aided power generation (SAPG) plant using specific consumption theory|
|Citation:||Science China Technological Sciences, 2016; 59(2):322-329|
|HongJuan Hou, MengJiao Wang, YongPing Yang, Si Chen, Eric Hu|
|Abstract:||In contrast to a traditional coal-fired power generation plant where steam extracted from a turbine is used to preheat the feedwater in all preheating stages, a solar-aided power generation (SAPG) plant uses solar heat to replace a part or all of the extracted steam in one or more preheating stages. The performance of an SAPG plant with different replacements is investigated in this study by using specific consumption theory (SCT). Fuel-specific and cost-specific consumption models for SAPG plants are built based on the SCT. A typical 330 MW coal-fired power plant is used as the study case. The performance of the SAPG plant in terms of specific consumption, with steam obtained from the first through the eighth (except for the fourth) stages of extraction replaced by solar heat, is compared with that of the reference coal-fired power plant. The fuel-specific consumption of the SAPG plant is determined to be lower than that of the reference coal-fired power plant. The fuel-specific consumption accrual distribution in SAPG plants is used to assess the effect of each individual replacement. Effective strategies to reduce the specific costs of the SAPG and coal-fired power plants are proposed based on the results of this study.|
|Keywords:||Solar-aided power generation; specific consumption theory; fuel-specific consumption; cost-specific consumption|
|Rights:||© Science China Press and Springer-Verlag Berlin Heidelberg 2015|
|Appears in Collections:||Mechanical Engineering publications|
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