Thermodynamic System Integration of Solar-coal-fired Power Plant
| Autor: | Wen-feng Fu, Wen-jing Shao, Wen-sheng Zhao, Zhi-yue Wang, Lan-jing Wang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Exergy
business.industry Boiler (power generation) Thermal power station Solar energy Thermodynamic system Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics Environmental science Astrophysics::Earth and Planetary Astrophysics business Process engineering Secondary air injection Physics::Atmospheric and Oceanic Physics Coal fired power plant |
| Zdroj: | DEStech Transactions on Engineering and Technology Research. |
| ISSN: | 2475-885X |
| Popis: | Solar-assisted coal-fired thermal power plant is an important direction to achieve large scale use of solar energy. Based on the exergy analysis theory, the 660MW double reheat unit is taken as an example to analyze the solar assisted feed water system and the solar assisted secondary air system. The results show that the performance of solar-assisted coal-fired units is better than that of coal-fired units alone, and the solar-assisted secondary air system efficiency is up to 47.15%. On the basis of this, the paper analyzes the exergy loss of the equipment of the coal-fired unit, the solar-assisted feed water system and the solar-assisted secondary air system. It reveals the exergy loss of the unit is mainly concentrated in the boiler side, the introduction of solar energy to reduce the boiler side of the loss, then the system's total loss is reduced. It also shows that changes in the feed water parameters in the solar assisted feed water system have an impact on the overall system. |
| Databáze: | OpenAIRE |
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