Evaluation of aeration capacity of fermentors by adaptive identification method

1980 ◽  
Vol 45 (8) ◽  
pp. 2266-2271 ◽  
Author(s):  
Miroslav Sobotka ◽  
Jaroslav Votruba
Keyword(s):  
Time Dependence ◽  
Oxygen Electrode ◽  
New Method ◽  
Dynamic Experiment ◽  
Adaptive Identification ◽  
Identification Method ◽  
Column Type ◽  
Method Of Evaluation ◽  
Aeration Capacity

A new method of evaluation of the aeration capacity, kLa from data measured with the use of an oxygen electrode was proposed, based on the algorithm of adaptive identification. In this way, even the time dependence of kLa in the course of a dynamic experiment can be obtained. The results from mechanically stirred fermentors and apparatuses of the bubbled column type show that the commonly used assumption about the time independence of kLa does not hold for intensively aerated apparatuses.

Determination of aeration capacity of bubbled column type fermentors with oxygen electrode

1978 ◽  
Vol 43 (3) ◽  
pp. 713-718 ◽  
Author(s):  
Jaroslav Votruba ◽  
Miroslav Sobotka ◽  
Aleš Prokop
Keyword(s):  
Oxygen Electrode ◽  
Column Type ◽  
Aeration Capacity

New method of evaluation of the kinetic parameters of bi-exponential enzyme-catalyzed reactions

1998 ◽  
Vol 30 (6) ◽  
pp. 735-743 ◽  
Author(s):  
Carmelo Garrido-del Solo ◽  
Francisco Garcı́a-Cánovas ◽  
José Tudela ◽  
Bent H. Havsteen ◽  
Ramón Varón-Castellanos
Keyword(s):  
Kinetic Parameters ◽  
New Method ◽  
Catalyzed Reactions ◽  
Enzyme Catalyzed Reactions ◽  
Method Of Evaluation

scholarly journals Online diagnosis of supercapacitors using extended Kalman filter combined with PID corrector

2021 ◽  
Vol 12 (3) ◽  
pp. 1521
Author(s):  
Zoubida Bououchma ◽  
Jalal Sabor
Keyword(s):  
Electrochemical Impedance ◽  
New Method ◽  
Specific Power ◽  
Attractive Alternative ◽  
State Of Health ◽  
Energy Storage Devices ◽  
Good Efficiency ◽  
Storage Devices ◽  
Online Identification ◽  
Identification Method

<span>Supercapacitors are electrical energy storage devices with a high specific power density, a long cycle life and a good efficiency, which make them attractive alternative storage devices for various applications. However, supercapacitors are subject to a progressive degradation of their perfor-mance because of aging phenomenon. Therefore, it is very important to be able to estimate their State-of-Health during operation. Electrochemical Impedance Spectroscopy (EIS) is a very recog-nized technique to determine supercapacitors’ state-of-health. However, it requires the interrup-tion of system operation and thus cannot be performed in real time (online). In this paper, a new online identification method is proposed based on extended Kalman observer combined with a complementary PID corrector. The proposed method allows to accurately estimating supercapacitor resistance and capacitance, which are the main indicators of supercapacitor state-of-health. The new online identification method was applied for two voltage/current profiles using two different supercapacitors. The resistance/capacitance estimated by the new method and the conventional EKF were compared with those obtained by an experimental offline method. In comparison with conventional EKF, the capacitance obtained by the new method is significantly more accurate.</span>

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