Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
PROPAGATION OF ANHYDROUS ETHANOL-AIR FLAMES WITH DISTINCT EQUIVALENCE RATIOS AT SUB-ATMOSPHERIC PRESSURE
Submission Author:
Lucas Marchi Pedro de Azevedo Silva , SP
Co-Authors:
Lucas Marchi Pedro de Azevedo Silva, Andrés Armando Mendiburu Zevallos, João Carvalho
Presenter: Lucas Marchi Pedro de Azevedo Silva
doi://10.26678/ABCM.ENCIT2018.CIT18-0593
Abstract
The main parameter to characterize mixtures combustion is the laminar flame velocity. This project aims to gather data concerning the premixed laminar flame velocities of anhydrous ethanol-air mixtures under a predetermined pressure of 60 kPa for different equivalence ratios, at room temperature, in order to ascertain the influence of this factor in the premixed laminar flame velocity itself. The mixture is contained in a transparent propagation tube after homogeneity is achieved in a preliminary mixture preparation chamber. A spark in one of the ends ignites it, giving rise to the flame, and its propagation is recorded using a high speed camera. Finally, the flame velocity throughout the extension of the tube is measured by video analysis. Results demonstrated that the equivalence ratio has a considerable influence over the flame speed, leading to significant variations in its magnitude.
Keywords
Combustion, Premixed laminar flame velocity, ethanol
