Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
EXEGETICAL ANALYSIS OF BRAYTON CYCLE POWER GENERATION USING BIOGAS AS FUEL
Submission Author:
Jesús David Rhenals Julio , Córdoba , Brazil
Co-Authors:
Jesús David Rhenals Julio, Carlos Manuel Romero Luna, Felipe da cunha boschi Fagnani
Presenter: Jesús David Rhenals Julio
doi://10.26678/ABCM.COBEM2021.COB2021-2321
Abstract
The high environmental impact combined with the risk of future availability associated with fossil fuels has led to the search for partial or total substitution of these fuels, seeking new sources of energy that generate a low environmental impact and are renewable. In this context, fuels produced from biomass promise to be an important alternative, among them biogas, which is produced through the process of anaerobic digestion, this fuel can be an ideal substitute for natural gas, since it has good properties as a fuel due to its high percentage of methane. Natural gas has several applications in industry, for example, it is widely used in power generation in thermoelectric power plants. In this work, an exergetic analysis of the power generation process utilizing a gas turbine using bovine biogas as working fuel is carried out. For this purpose, a thermodynamic model of the process is developed in Aspen HYSYS software, in which the combustion process is calculated using the chemical equilibrium equations and the combustion chamber is considered adiabatic. The Peng-Robinson equations are used for the estimation of the properties and then the equations are programmed to calculate the exergy of all the flow lines of the system, subsequently using the exergy balance the exergy destroyed, and the energy efficiency of the process is calculated. Finally, to optimize the process, a sensitivity analysis is performed in which the air-fuel ratio and the pressure ratio of the turbine and compressor are varied, thus determining the impact of these variables on the efficiency of the process.
Keywords
Biogas, Biomass, Brayton cicle, Aspen HYSYS
