Modeling and control of a heated tank system with variable liquid hold-up

Download
2013
Yücel, Tarık
The aim of this thesis study was the modeling and controlling of a heated tank system with variable liquid hold-up. Mathematical model representation of the process was developed using mass and energy balances. Experiments were conducted to obtain the correct model parameters of the process. After obtaining the model parameters, linearized form of the model was developed. Proportional-Integral-Derivative (PID) controller parameters are found at different nominal conditions using a Simulink code that estimates optimum controller parameters by minimizing the time weighted absolute error of the response. Then, starting at different nominal conditions PID and Model Predictive Controller (MPC) performances were evaluated. MPC and PID controllers were implemented on the nonlinear process model using Simulink program. The results showed that MPC gives best response behavior for both set point tracking and disturbance rejection cases.

Suggestions

Comparison of Fenitrothion and Trifluralin Adsorption on Organo-Zeolites and Activated Carbon. Part II: Thermodynamic Parameters and the Suitability of the Kinetic Models of Pesticide Adsorption
LÜLE ŞENÖZ, Güzide Meltem; Atalay, Mustafa Ümit (Informa UK Limited, 2014-07-04)
The suitability of two kinetic models and the thermodynamic parameters of pesticide adsorption were investigated based on obtained data of previous studies. Kinetic evaluation indicated that the pesticides adsorption on adsorbents followed the pseudo-second-order model. Gibbs free energy (Delta G degrees), enthalpy (Delta H degrees), and entropy (Delta S degrees) were calculated for thermodynamic parameters by using linearized Arrhenius equation. The results indicated that the sorption process of fenitrothi...
An Experimental study on boundary layer separation control over s809 airfoil using synthetic jet actuators
Gül, Melika; Akmandor, İbrahim Sinan; Uzol, Oğuz; Department of Aerospace Engineering (2013)
This thesis presents the results of an experimental study that investigates the effect of periodic excitation from individually controlled synthetic jet actuators on the separated shear layer and wake of a model wing that has S809 airfoil profile. The synthetic jet array consists of three individually controlled synthetic jet actuators driven by piezoelectric diaphragms located at 28% chord location near the middle of the span of the blade. In the first part of the study, hot wire and surface pressure measu...
Modeling and sensitivity analysis of high temperature PEM fuel cells by using Comsol Multiphysics
Sezgin, Berna; Caglayan, Dilara Gulcin; DEVRİM, YILSER; Steenberg, Thomas; Eroğlu, İnci (2016-06-22)
The objective of this study is to observe the effect of the critical design parameters, velocities of inlet gases (hydrogen and air) and the conductivity of polymer membrane, on the performance of a high temperature PEM fuel cell. A consistent and systematic mathematical model is developed in order to study the effect of these parameters. The model is applied to an isothermal, steady state, three-dimensional PEM fuel cell in order to observe concentration profiles, current density profiles and polarization ...
Investigating the effects of operational parameters on photofermentation in batch and semi-batch reactors and the applications of photofermentation in multi-stage energy systems
Akman, Melih Can; Bayramoğlu, Tuba Hande; Gündüz, Ufuk; Department of Environmental Engineering (2018)
The aim of this thesis study was to investigate the effects of operational parameters on photofermentation in batch and semi-batch reactors, and the application of photofermentation in multi-stage energy systems. Firstly, three operational conditions of the substrate concentration, Volatile Suspended Solids (VSS) concentration and the light intensity leading to the maximization of hydrogen production in a single stage were optimized. The highest hydrogen production rate (HPR) of 1.04 mmol H2/L.h was achieve...
Modeling of catalytic ozonation process in a three-phase reactor
Erol, Funda; Oezbelge, Tuelay A.; Oezbelge, H. Oender (Informa UK Limited, 2009-01-01)
In this research, the main objective was to determine the flow characteristics of a three-phase reactor in order to use this knowledge in the modeling of catalytic ozonation of aqueous dye solutions. Therefore, the stimulus-response method was used in the tracer experiments; thus, the degree of liquid mixing in the reactor was estimated by means of residence time distribution, Peclet number and axial dispersion coefficient in the presence and the absence of the catalyst. Experimental data were obtained by p...
Citation Formats
T. Yücel, “Modeling and control of a heated tank system with variable liquid hold-up,” M.S. - Master of Science, Middle East Technical University, 2013.