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Detecting disturbance of uniformity of a nitrogen and CO2 mixture in an acoustic tube

Remiorz L.

Journal of Power Technologies

2014

Vol. 94, nr 3

226--231

In light of concerns over climate changes, extensive scientific research is ongoing in the field of CO2 separation [1–5]. No definitive determination has yet been made as to which separation technology should be selected and efforts are continuing to find new methods [6–11]. This paper presents preliminary results of measurements of the disturbance of the uniformity of a nitrogen and CO2 mixture inside a thermoacoustic tube. Transversely to the tube axis, a detection path was placed to identify disturbance of the CO2 and nitrogen content. The tube was filled with a uniform mixture of nitrogen and CO2. An acoustic standing wave was induced inside the tube and the readings of the mixture uniformity disturbance detection system were recorded. More data were recorded from an internal microphone, enabling detection of the standing wave. The results were processed numerically and the computations resulted in a series of curves in the time and frequency domains, illustrating the behavior of the mixture inside the tube.