Gas flow rate and velocity measurement for the assessment of channeled flows of pollutants. Critical review and feedback

Summary

For any industrial unit, a better understanding of its pollutant emissions involves quantifying the flow of gaseous and particulate pollutants and not just expressing a pollutant concentration. However, this data is still imprecise and poses a number of reliability problems, particularly because of the difficulty of accurately measuring gas velocities and flows.
Based on a review of the state of the art and feedback from experience, RECORD has produced a guide tailored to channelled gaseous effluents (flue gases, process gases or biogas). The document begins with a review of the theoretical basis for measuring velocities and flow rates, followed by a review of applicable technologies in the form of practical data sheets. Finally, a summary enables the various techniques to be compared according to different criteria, so that the most appropriate technique can be chosen.