CONTRIBUTION TO HEAT TRANSFER IN AIR-LIFT AND BUBBLE COLUMN FERMENTORS WITH NEWTONIAN AND NON-NEWTONIAN SOLUTIONS

1996 ◽  
Vol 155 (1) ◽  
pp. 45-64 ◽  
Author(s):  
AHMED ZAIDI ◽  
SALIHA ALEHYEN ◽  
ABDESSAMAD NASSIM
Keyword(s):  
Heat Transfer ◽  
Bubble Column ◽  
Air Lift

Xanthan production in bubble column and air-lift reactors

1992 ◽  
Vol 39 (1) ◽  
pp. 85-94 ◽  
Author(s):  
Ii-Soon Suh ◽  
Adrian Schumpe ◽  
Wolf-Dieter Deckwer
Keyword(s):  
Bubble Column ◽  
Xanthan Production ◽  
Air Lift

Development of a Heat Transfer Coefficient Model via Experimental Validation

2008 ◽  
Vol 3 (1) ◽  
Author(s):  
Adel A. Al-Hemiri ◽  
Nada Sadoon Ahmedzeki
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Standard Deviation ◽  
Transfer Coefficient ◽  
Bubble Column ◽  
Mechanistic Model ◽  
Bubble Column Reactor ◽  
Ann Model ◽  
Liquid Bubble ◽  
The Heat Transfer Coefficient

Knowledge of the heat transfer coefficient is an essential prerequisite for any industrial gas/liquid bubble column reactor design. In this paper, experiments were carried out in a laboratory scale bubble column using air–water and 10wt% glycerin–air solution systems. Experimental values of the heat transfer coefficient were compared with some of the previous published correlations and were also compared with the model predicted by ANN in our previous work (Ahmedzeki, 2007). The ANN model was found to be better than all previous published correlations. %AARE was 8.2 and %standard deviation was 7.85. A mechanistic model was also developed to analyze the system. The resulting correlation was a %AARE of 17.5 and %standard deviation of 15. Both the above models and the experimental results compared well with the previous published correlations.

Study of an air-lift system, Part II: Heat transfer in co-current, vertical two-phase, non-boiling flows

1987 ◽  
Vol 65 (3) ◽  
pp. 437-442
Author(s):  
B. P. A. Grandjean ◽  
F. Ajersch ◽  
P. J. Carreau ◽  
I. Patterson
Keyword(s):  
Heat Transfer ◽  
Two Phase ◽  
System Part ◽  
Air Lift
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