2023 Volume 40 Issue 3 Pages 173-
Some studies examined that acoustic wave could enhance the adsorption process where the velocity amplitude dominated the enhancement effect. The objective of this study is to investigate the adsorption enhancement effect induced by oscillating flow experimentally. The frequency of the oscillation is as small as 0.05 Hz, which is much lower than the acoustic wave. An oscillating flow with reverse flow was successfully created using 2 blowers. It was observed that almost no enhancement happened when non-dimensional velocity amplitude is about unity while the effect increases as the velocity amplitude becomes large. It was also confirmed that the effect decreases when the air humidity from the downstream side of the adsorbent is low. It suggests that the reverse flow transfers humidity from down stream side. The results indicate that oscillating flow with reverse flow is essential for the enhancement, and it is necessary to supply moist air to the both side of the adsorbent pack to attain the effect.
