Component and Process Based Exergy Evaluation of a 600MW Coal-fired Power Plant

Abstract

Component and process based exergy evaluation was performed on a typical 600MW coal-fired power plant in China. Component based exergy analysis figures out and compares the exergetic performances of each component by identifying the deficiencies of each component. Process based exergy analysis aims at finding out the degree of imperfection of main processes, which will break the limitation of singlecomponent performance optimization (a sensitivity analysis) and enlighten the process-level optimization by innovative flow design and the consideration of the interaction between components. This work provides the exergy consumption and distribution profile of a large-scale coal-fired power plant with componentbased and process-based analysis, providing guidance for the energy-saving measures.

Comparative Evaluation of Integrated Waste Heat Utilization Systems for Coal-Fired Power Plants Based on In-Depth Boiler-Turbine Integration and Organic Rankine Cycle

“…Exergy analysis is employed in this paper to explore the difference in the energy utilization of the four cases. Exergy analysis can identify the sources and the magnitudes of exergy destructions and losses of energy systems [ 71 , 72 , 73 ], thus highlighting the processes with the largest exergy destruction or loss as the key components or processes for potential system improvement [ 1 , 74 , 75 , 76 ]. Note that the exergy losses do not occur at a single component level but only at the overall system level, when the system is interacting with the environment via vent streams.…”

Analisis Eksergi Pada Pembangkit Listrik yang Memanfaatkan Panas Buangan Di PT Semen Padang

“…Pemanfaatan ini bisa dilihat dari kinerja yang ada. Dengan menilai kinerja tersebut, dapat ditentukan area atau komponen mana yang memiliki kinerja konversi energi yang rendah dan dapat pula diidentifikasikan di mana perbaikan perlu dilakukan (Wu et al, 2014). Hal ini sangat membantu dalam meningkatkan efisiensi sistem atau komponen energetik, meminimalkan biaya operasi dan meningkatkan profitabilitas industri.…”

Analysis of Combustion Characteristics in Boilers Using Comparison of Coal Fuel Mixtures and Bark Biomass To Determine Optimal Combustion Conditions in a Steam Power Plant

“…One effective way to determine the quantity & quality of the energy system is through combustion energy analysis. Process-based exergy analysis aims to determine the degree of imperfection of the main process, which will break the limitations of single-component performance optimization (sensitivity analysis) and enlighten process-level optimization with innovative flow design and consideration of interactions between components [2]. Therefore it is very important to study the various possible factors so that a power plant system can operate optimally and is far more friendly to the environment.…”