Abstract
In this study, integration of appropriate renewable methods are going to be applied on conventional coal fired steam power plant which has 660 MW full load capacity and including 4 Turbines (1 HP,1 IP and 2 LP), one Benson type boiler and having multi pre heater stages for each unit. Steam parameters are 177 Bar and 541 o C super-heater section and 50 bar 539 o C for re-heater section. Primary fuel is coal except for startup and shut down operations. It is aimed by retrofitting some renewable energy methods on existing power plant, thus eliminating conventional type power plants adverse effects on thermodynamically, environmental and economic issues. One of the most important issue of conventional steam power plant operation is waste heat recovery management. A widespread techniques has been developed on this topic. It's possible to handle low grade heat by considering thermodynamic and environmental facts and also dealing with restrictions and opportunities after fulfilled feasibility study. In this study, it is being proposed waste heat recovery by combining Organic-Rankine Cycle (ORC) with steam-Rankine cycle at available section. Brief summary of operation is ORC takes place after regenerative air preheater section and the target is to utilize waste heat of flue gas either via district heating or power generation up to few MW values. Depending upon the calculation and results additional modifications can further be needed as well.
Highlights
Energy is the power and vital part of life
Integration of appropriate renewable methods are going to be applied on conventional coal fired steam power plant which has 660 MW full load capacity and including 4 Turbines (1 HP, 1 IP and 2 LP), one Benson type boiler and having multi pre heater stages for each unit
The combustion of fossil fuels leads to the inevitable production of carbon dioxide (CO2), while most of the times harmful emissions are produced, such as carbon monoxide (CO), nitrogen oxides (NOX), sulfur oxides (SOX), unburned hydrocarbons (HC), and solid particles
Summary
Energy is the power and vital part of life. In the future, we must have a sustainable, affordable and environment friendly energy supply. A major challenge for the future electric grid is to integrate renewable power sources such as solar, wind and biomass [2]. The combustion of fossil fuels leads to the inevitable production of carbon dioxide (CO2), while most of the times harmful emissions are produced, such as carbon monoxide (CO), nitrogen oxides (NOX), sulfur oxides (SOX), unburned hydrocarbons (HC), and solid particles. Another critical disadvantage of conventional technologies is that they need continuous fuel supply to operate, which contributes to the operating costs. It is possible to see several studies that deal with renewable energy integration to conventional systems related to thermodynamic analysis
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