Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
STUDIES OF THE INFLUENCE IN THE PERFORMANCE PARAMETERS IN SPARK IGNITION ENGINE OF TWO HEAT TRANSFER MODELS IN A PHENOMENOLOGICAL MODEL USING BIOMETHANE, BIOGAS AND ETHANOL
Submission Author:
Nelson Ferreira Gonçalves Junior , PA
Co-Authors:
Nelson Ferreira Gonçalves Junior, Ana Paula Mattos
Presenter: Nelson Ferreira Gonçalves Junior
doi://10.26678/ABCM.COBEM2023.COB2023-0994
Abstract
Internal combustion engines represented a significant technological advance for humanity and significantly improved production and transportation. However, the unrestrained use of fossil fuels causes great damage to the planet due to the emission of greenhouse gases (GHGs), causing global warming. According to a study by the World Meteorological Organization (WMO), there is a 50% chance that the increase in global average temperature will exceed 1.5℃ in the five years starting from 2022. Through this problem, several alternative energy sources have been developed to replace conventional fuels, such as ethanol, biogas and biomethane, discussed in this work. Despite the burning of ethanol and biomethane emitting CO2, there are compensations in the use of both from an environmental point of view. Ethanol is renewable because it is obtained from the plantation of vegetable raw material and is considered cleaner because, in the plant's life cycle, there is the absorption of CO2. Biomethane and biogas are renewable because it is obtained from decomposing much organic matter in household waste, manure, and sewage sludge. It is considered less polluting because it favors better treatment of these materials. This work aims to evaluate two models of heat transfer through computer simulation. They are Hohenberg and Woschni models, applied in the phenomenological model in a engine using ethanol, biomethane, and biogas as fuels. The simulation was implemented in MATLAB® by González, 2010, and the phenomenological model used is the Ferguson model. Therefore, it is expected to analyze the impact of models on performance parameters by comparing them with experimental data from Berlini, 2017, using biogas and ethanol as fuels, and determining the best method. After that, to simulate the efficiency data using the best heat transfer model for biomethane. After the simulation it was possible to observe that the Hohenberg model presented the lowest errors compared to the Woschni model. From the use of only the Hohenberg model, ethanol was shown to be the fuel with the highest general values of maximum pressure, indicated average pressure and thermal efficiency, followed by biomethane, and finally biogas with the lowest values. Thus, enabling justifications for greater use of these renewable fuels through existing models, but not applied to the situations described in this work.
Keywords
Heat transfer models, Phenomenological model, spark ignition engine simulation, renewable fuels, Biofuels (ethanol)
