Abstract
As coal-fired power plants are the main source of coal consumption, their energy generation efficiency needs to be improved urgently. One of the main reasons for irreversible energy loss in coal-fired power plants is the mismatched energy levels. To reduce the irreversible energy loss and improve the generation efficiency, the thermodynamic system of the coal-fired power plant needs to be optimized. In this work, a mathematical model of thermodynamic system has been established based on balance principles of mass and energy, which has been validated by design values of a 600 MW coal-fired power plant. Meanwhile, a novel air preheating system based on the feedwater heater drainage has been proposed, to utilize energy from the steam turbine extraction and boiler flue gas. Compared with the conventional schemes, the power supply efficiency of this optimized scheme improved by 1.7%, the coal consumption reduced by 13.1 g/kWh, and the generation cost reduced by 1.85 $/MWh. This work provides an accurate mathematical model for the thermodynamic system of a thermal power plant and an effective optimization method for improving the generation efficiency of a coal-fired power plant.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
