Measuring Sound Speed in Gas Mixtures Using a Photoacoustic Generator
Mariusz Jarosław Suchenek , T. Borowski
AbstractWe present a new method which allows us to percentage distinction of gas composition with a fast response time. This system uses the speed of sound in a resonant cell along with temperature to determine the gas mixture composition. The gas mixtures contain two gases with an unknown combination. In our experiment, the acoustic waves were excited inside the acoustic longitudinal resonator with the use of a positive feedback. This feedback provides fast tracking of a resonance frequency of the cell and causes fast tracking changes in the speed of sound. The presented method corresponds to the theoretical description of this topic. Two gas mixtures—carbon dioxide and argon mixed with nitrogen—were tested.
|Journal series||International Journal of Thermophysics, ISSN 0195-928X|
|Publication size in sheets||0.5|
|Keywords in English||Photoacoustic effect Positive feedback Speed of sound|
|Score|| = 20.0, 27-11-2017, ArticleFromJournal|
= 20.0, 27-11-2017, ArticleFromJournal
|Publication indicators||: 2016 = 0.745 (2) - 2016=0.886 (5)|
|Citation count*||0 (2018-06-18)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.