Στήλη φυσαλίδων


Column height: 1.30 m
Cross section: 10x10 cm
Test section material: Plexiglass
Pressure: Atmospheric
Temperature: Ambient
Fluids: air and various liquids
Gas distributer: Porous sparger
(20-100 microns)

 

Applications:
- Study of gas dispertion in bubble columns - effect of
sparger porous size and liquid properties on:
       bubble size distribution
       phase velocity profiles
       gas holdup
- Flow visualisation experiments
Instrumentation:
- High speed video camera for flow visualisation
- LDA
for local velocity measurements
- Differential pressure transducers
References
  Kazakis, N.A., Mouza, A.A. and Paras, S.V. 2007 Experimental study of bubble formation at porous spargers. ICMF 2007, 6th International Conference on Multiphase Flow, Leipzig, Germany, July 9 - 13, 2007.
Kazakis, N.A., Papadopoulos, I.D., Mouza, A.A., 2007 Bubble columns with fine pore sparger operating in the pseudo-homogeneous regime: Gas hold up prediction and a criterion for the transition to the heterogeneous regime, Chem. Eng. Sci. 62, 3092-3103
Kazakis, N.A., Mouza, A.A. and Paras, S.V. 2007 Experimental study of bubble formation at metal porous spargers: Effect of liquid properties and sparger characteristics on the initial bubble size distribution, Chem. Eng. J., in press.
Kazakis, N.A., Mouza, A.A. and Paras, S.V. 2006 Bubble size distribution at the entrance of bubble columns with pore sparger. CHISA 2006, 17th International Congress of Chemical and Process Engineering, Prague, Czech Republic, August 27 - 31, 2006
Kazakis, N.A., Papadopoulos, I.D., Mouza, A.A., 2006 Effect of liquid properties on holdup in bubble columns with fine pore sparger. CHISA 2006, 17th International Congress of Chemical and Process Engineering, Prague, Czech Republic, August 27 - 31, 2006.
Mouza, A.A., Dalakoglou, G.K. and Paras, S.V. 2005 Effect of liquid properties on the performance of bubble column reactors with fine pore spargers, Chem. Eng. Sci. 60, 5, 1465-1475.
Kazakis, N.A., Mouza, A.A., Paras, S.V. 2005 Study of coalescence and breakage in bubble columns with fine pore spargers. 43rd European Two-Phase Flow Group Meeting, Prague, Czech Republic.
Mouza, A.A., Kazakis, N.A. and Paras, S.V.  2004 Bubble column reactor design using a CFD code. 1st Intern. Conference "From scientific computing to computational engineering" Athens, Greece.
Ατμακίδης, Θ.Γ., Δαλάκογλου, Γ.Κ., Μουζά Α.Α. και Παράς Σ.Β. Πειραματική μελέτη και προσομοίωση στήλης φυσαλίδων, 4ο Πανελλήνιο Επιστημ. Συνέδριο Χημ. Μηχανικής, Πάτρα 2003.