Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Establishment of a Reference State for Evaluation of Attenuating Effects in Gas Flow Measurement by Ultrasonic Technology
Submission Author:
Ligia Franco , ES
Co-Authors:
Ligia Franco, Rogerio Ramos, Gabriel Fontoura
Presenter: Ligia Franco
doi://10.26678/ABCM.COBEM2019.COB2019-1838
Abstract
It is well known that carbon dioxide strongly attenuates waves generated by ultrasonic gas flowmeters. This study proposes an experimental evaluation to stablish a reference state, in order to analyze such attenuating effects of high concentration of CO2. The aim is to evaluate the behavior, as well as the performance of flowmeter devices, when submitted to several mixtures of atmospheric air and carbon dioxide. Results shows that carbon dioxide alters significantly the measured speed of sound and, concomitantly, the flow measurement. In order so surpass such effects, transducers approximation technique shows to be a viable alternative
Keywords
flow measurement, ultrasonic flow meter, Sound speed, attenuation, Carbon dioxide
