Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
THE ACOUSTIC ENHANCEMENT ANALYSES IN THE COMBUSTION PARAMETERS OF THE EUCALYPTUS FIREWOOD.
Submission Author:
Flávio Freitas , MG
Co-Authors:
Flávio Freitas, Osvaldo Jose Venturini, Electo Eduardo Lora, Luis Roberto de Mello e Pinto
Presenter: Flávio Freitas
doi://10.26678/ABCM.ENCIT2018.CIT18-0274
Abstract
This work aims to analyze the influence of acoustic enhancement in the combustion process of eucalyptus firewood. The influence of acoustic was evaluated by the addition of sound waves in the primary air supply pipe of the boiler. The comparative study considers both combustion processes: with and without acoustic enhancement. In this way, the study of the addition of waves to reduce pollutants such as CO, NOx and soot appears. A comparative analysis of the temperature profiles and gas composition levels at specific points of the combustion chamber and the chimney, considering combustion with and without acoustic enhancement, was carried out. From the analysis of the results it was observed that the acoustic enhancement has a direct influence on the biomass combustion, increasing the heat transfer rate of the fuel to the working fluid and reducing the amount of pollutants , as NOx and intermediate products of incomplete reaction. Through the results it was observed that the maximum temperature of the combustion products increased 13.72% with the acoustic enhancement. In addition, the heating rate with acoustic enhancement presented a 4 times higher rate compared to the same process in the absence of the acoustic process.
Keywords
Pulsating combustion, Biomass combustion, Acoustic field, Sound pressure level
