Citas bibligráficas
Miranda, A., García, S. (2018). Análisis exergético del condensador principal de la central de ciclo combinado Ventanilla [Tesis, Universidad Nacional de Ingeniería]. http://hdl.handle.net/20.500.14076/15766
Miranda, A., García, S. Análisis exergético del condensador principal de la central de ciclo combinado Ventanilla [Tesis]. : Universidad Nacional de Ingeniería; 2018. http://hdl.handle.net/20.500.14076/15766
@mastersthesis{sunedu/3501518,
title = "Análisis exergético del condensador principal de la central de ciclo combinado Ventanilla",
author = "García Rodríguez, Sandro Richter",
publisher = "Universidad Nacional de Ingeniería",
year = "2018"
}
In this thesis the energy-exergetic analysis was carried out for the main triple-pressure condenser of the steam turbine, in the Ventanilla combined-cycle thermoelectric power station with total effective power in 2X1 of 485MW belonging to the SEIN, which is located in the district of Ventanilla, province of Callao, department of Lima. In order to carry out the present analysis, the description of the research methodology is presented in Chapter I, of which antecedents developed by some authors on topics related to thermodynamic analysis in main condensers of combined cycles, likewise refers to the description of the problem regarding the 3MW power reduction in the combined cycle, we also formulate the main problem in which way the energy-exergy analysis of the main condenser of the steam turbine of the combined cycle, will help to diagnose the losses and excess of irreversibilities in this one? On the other hand in this chapter we propose the hypothesis in relation to propose corrective techniques of the critical points found, for which we establish the respective variables and indicators. In Chapter II of this analysis we develop the theoretical framework which presents the thermal analysis of control volumes which refers to the studies of mass, energy, entropy and energy exchange in the control volumes and the environment that surrounds it, likewise we present the balance of energy, entropy and exergy in permanent state, we also consider the efficiencies that are calculated from the first and second law of thermodynamics. The concept of exergy is presented as a product of the union of the first and second law of thermodynamics, which represents the maximum useful work that can be obtained from the amount of energy of a system, when said system tends to a final state of equilibrium with its reference environment. The energy and exergy of the main currents of mass, heat and work involved in the main condenser of the study plant is determined, which is responsible for achieving the maximum expansion of the steam of the turbine and consequently the maximum transformation to mechanical work Chapter III describes in a comprehensive manner the function of the main equipment that is part of the combined cycle. Chapter IV presents the process of exergy calculation of the capacitor, which considers the thermal analysis of the condenser, applying the energy analysis and later the exergy analysis, ending with the development of the equations for the calculation of the energy and exergy efficiency of the capacitor, which allowed us to evaluate the behavior and find the operational problems of the main capacitor. Chapter V presents the results corresponding to the energy-exergy evaluation of the condenser comparing it with the energetic and exergy results obtained at operating conditions with the results of effective power at 100% load. From the comparison made, the results obtained show that for the operating conditions, the energy efficiency is lower than that obtained by the effective power test, these results can be explained because with the effective power test there is a lower mass expense of the exhaust steam. Likewise, the analyzed energy-exergy analysis defines the hypothesis, which has allowed to show the procedures to thermally evaluate the main capacitor. In addition to operating conditions 2x1 at 100% load we have obtained that for effective power tests a greater exergetic efficiency is obtained compared to operating conditions 2x1 at 100% load. Finally we conclude that by means of exergy analysis it is possible to detect energy degradation in a system, in our case we find that with the energy analysis the lost energy is located in the heat lost in the condenser and the heat discarded to the environment, on the other hand exergy analysis is observed that the ability to produce work or power (exergy) is lost during the operation of the condenser, likewise with the exergy analysis is identified and quantified losses by irreversibilities caused by entropy production within the team.
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