研究目的
Investigating the performance of a solar aided power generation plant in fuel saving operation mode.
研究成果
The study concludes that the SAPG system is an efficient way to utilize solar energy for power generation, with significant coal saving and solar power generation share increases when the heat output of the solar field changes. The concept of solar field equivalent efficiency (SFEE) is proposed for optimizing the solar field, and the optimal velocity of HTF in the absorber tube is identified.
研究不足
The study is based on the lumped parameter assumption, which may not capture all the complexities of the system. The dynamic responses are analyzed under a typical day, which may not represent all possible operating conditions.
1：Experimental Design and Method Selection:
The study establishes sub-models of main components in a SAPG plant based on the lumped parameter assumption. A 330 MW SAPG power plant is simulated to analyze the variations of performances and main parameters with the solar field heat output and dynamic responses under a typical day.
2：Sample Selection and Data Sources:
A 330 MW coal-fired unit coupled with a parabolic trough solar field is selected as the study case. Typical parabolic trough solar collector LS-2 and VP-1 HTF are chosen.
3：List of Experimental Equipment and Materials:
The main parameters of LS-2 collector in a solar collector assembly (SCA) are listed, including solar collector aperture area, absorber tube external surface area, glass envelope external surface area, etc.
4：Experimental Procedures and Operational Workflow:
The analysis process includes inputting DNI, area of solar field, HTF flow parameters, calculating the solar energy absorbed, heat output of solar field, circulating pump power, and pressure loss of the collector tube, among others.
5：Data Analysis Methods:
The study calculates the standard coal consumption rate, electric power of solar energy generation, and solar-to-electricity efficiency using specific equations.
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