Energy, Exergyand Energy Audit Analysis of Vijayawada Thermal Power Station
B. Sairamkrishna1, P. Vijaya Kumar2, Y.Appala Naidu3
1B. Sairamkrishna, M.Tech student, Department of mechanical Engineering, Lakireddy Balireddy College of Engineering, Mylavaram, India
2P. Vijaya Kumar, professor, Department of mechanical Engineering, Lakireddy Balireddy College of Engineering, Mylavaram, India
3Y.Appala Naidu, professor, Department of mechanical Engineering, Lakireddy Balireddy College of Engineering, My lavaram, India
Manuscript received on July 30, 2019. | Revised Manuscript received on August 25, 2019. | Manuscript published on August 30, 2019. | PP: 4308-4315 | Volume-8 Issue-6, August 2019. | Retrieval Number: F8916088619/2019©BEIESP | DOI: 10.35940/ijeat.F8916.088619
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Abstract: Vijayawada 210MW coal-based thermal power plant’s energy and exergy analyses were conducted to assess the energetic and exegetic efficiencies and losses of various parts and the plant’s general scheme. This coal-fired power plant, which consumes approximately 2,000 metric tons of coal, produces approximately 170 MW to 180 MW of electricity every day against installation ability of 210 mw the supply of energy to demand is declining throughout the world day by day. The increasing demand for energy has made power plants of science concern, but most power plants are built solely by the vigorous performance criteria based on the First Thermodynamics Law. The actual useful loss of energy cannot be justified by thermodynamics ‘ First Law because it does not distinguish between the quality and amount of energy. Thus, this current research deals with the comparison of coal-based thermal power plants electricity and exergy analyses. For calculation purposes, the entire plant cycle was divided into three areas: (1) only the turbo-generator with its inlets and outlets, (2) turbo-generator, condenser, feed pumps and regenerative heaters, (3) the entire cycle of boilers, turbochargers, condensers, feed pumps, regenerative heaters and auxiliary plants. The analyses were carried out considering information on this power plant’s layout (50 percent, 80 percentand 100 percent) and operation information (57 percent and 67 percent loading condition). The plant’s general energy efficiencies are 35.48 percent, 56.77 percent, 70.96 percent and 75.67 percent, and the general exergy efficiencies are a44.25 percent, 33.31 percent, 30.78 percent, and 30.21 percent, 50%, 80 percent, 100 percent of the design information. But the power plant’s general energy and exergy efficiencies in operational information are 39.2%, 46.6% and 27.9%, 27.2% for 57% and 67% loading lower than the design value Specific CO2, SOx, NOx and particulates are also used to study the environmental impactof power plants. To find the irreversibility of the method, the distribution of exergy losses in power plant parts was evaluated. The comparison between the energy losses and the exergy losses of the plant’s individual parts indicates that the highest power losses of 49.92% happen in the condenser, while the maximum exergy losses of 68.27% happen in the boiler. The analyses were also carried out one by one by inactivating the heater. Exergy assessment can be particularly efficient in defining methods to optimize the efficiency of current activities and plant design while energy equilibrium transfers heat between the device and its environment. Exergy-based operating and maintenance choices have been shown to be more efficient in decreasing inefficiencies in working power plants.
Keywords: energy analysis, exergy analysis, power plant flow scheme, energy and energy effectiveness, mass energy and exergy equilibrium equation, thermodynamics second law