 Tracer-gas mixing with air: Effect of tracer speciesL. Shao and S. B. Riffat Applied Energy, 1994, vol. 49, issue 2, 197-211 Abstract: The accuracy of the tracer-gas method depends on the spatial uniformity of tracer/air mixing, which in many cases is unsatisfactory. However, information on this critical problem has been scarce, largely due to the practical difficulty in obtaining experimental data. This paper presents a study of the effect of tracer species on tracer mixing, using a time-dependent computational flow dynamics (CFD) method. It was found that for single-zone tracer decay tests, three tracer-gases, namely sulphur hexafluoride, nitrous oxide and carbon dioxide have virtually identical mixing patterns and thus there is no difference between them in terms of airflow measurement results. However, for multi-gas tests, where there is inter-zonal tracer movement, the tracer-gases with different binary diffusivities exhibit significantly different mixing behaviours. In these situations, the choice of tracer will impact upon the accuracy of airflow measurement. These results support recent experimental findings concerning the significant effect of tracer species on airflow measurement. Date: 1994 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:49:y:1994:i:2:p:197-211 Ordering information: This journal article can be ordered from Access Statistics for this article Applied Energy is currently edited by J. Yan More articles in Applied Energy from Elsevier |
Is your work missing from RePEc? Here is how to contribute.
Questions or problems? Check the EconPapers FAQ or send mail to .
EconPapers is hosted by the
School of Business at Örebro University.