Awelewa, A. A. and Samuel, I. A. and Ojo, Kayode and ADEGBOLA, Oluwole and Somefun, Tobilola Emmanuel and Aborisade, D. O. (2024) Energy minimization in temperature control of a milk pasteurization plant using an extremum seeking optimization approach. Journal of Electrical Systems, 20 (2). pp. 165-180.
![[img]](http://eprints.covenantuniversity.edu.ng/style/images/fileicons/application_pdf.png) |
PDF
Download (1MB) |
Abstract
A milk pasteurization plant is a dynamic, nonlinear system that is highly energyintensive in unstable temperature conditions. It is important to ensure that an optimum temperature is maintained at the minimum energy cost during the pasteurization process—even in the face of disturbances which adversely affect the operation of the plant. Therefore, this paper presents an extremum seeking (ES) optimization approach for tuning a controller with proportional , integral ,and derivative (PID) terms so as to optimize the temperature stability of a milk pasteurization plant. The general mass and energy balance principle was used to model the plant, and an objective function was developed to reduce the rate at which liquefied petroleum gas (LPG) was used at the boiler's feeding rate within the 72– 76°C range. The mathematical model of each operational unit as well as the PID controller tuning for the optimal temperature control was simulated in MATLAB/ Simulink. Standard performance indicators were used to assess the stability performance of the pasteurized milk temperature control. In comparison to previous convectional controllers that produced lower output performances, the findings demonstrated that the ES-tuned PID controller gave the rise time of 0.103 s, settling time of 14.97 s, peak time of 14.97 s, and percentage overshoot of-0.034 %. Similarly, the LPG consumption rate of 1.80 × 10−3 kg/s at the boiler in terms of energy consumption, annual energy T saving and carbon emission reduction were reduced to 1.16 × 10−3 and 1.25 × 10−3 kg/s, 4.13 × 105 and 4.23 × 105 Baht/year, 89 × 10−4 and 92 × 10−4 metric ton,respectively, indicating the effectiveness of the ES-PID controller compared to the conventional controller as investigated. Therefore, as this research offers a better means of ensuring ideal temperature control throughout the pasteurization process of milk, it finds good application in the diary industry.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Milk Pasteurization; Energy Minimization; Temperature Control; Extremum Seeking; PID Controller |
| Subjects: | S Agriculture > SB Plant culture T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Electronics and Computer Science |
| Depositing User: | Patricia Nwokealisi |
| Date Deposited: | 13 Nov 2024 16:37 |
| Last Modified: | 20 Nov 2024 15:47 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/18587 |
Actions (login required)
 |
View Item |
