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Temperature distribution analysis in parallel plate treatment chamber for pulsed electric field processing: Numerical study

Kasri, Nur Faizal and Mohamed Piah, Mohamed Afendi and Adzis, Zuraimy and Hamzah, A. (2022) Temperature distribution analysis in parallel plate treatment chamber for pulsed electric field processing: Numerical study. ASEAN Engineering Journal, 12 (3). pp. 63-69. ISSN 2586-9159

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Official URL: http://dx.doi.org/10.11113/AEJ.V12.16551

Abstract

Studies on temperature distribution in parallel plate treatment chambers are limited due to its design which is more prone to arcing, thus, neglecting its use in continuous processing. Therefore, this study discusses the temperature distribution due to Joule heating in a parallel plate treatment chamber acting in continuous mode. The numerical results predict that at a slow flow rate (i.e., 0.0234 cm3/s), the fluid flow near the chamber wall is in a static state (0 cm/s), thus, increasing its residence time and resulting in receiving more pulses. In this situation, the temperature increased dramatically from 25 °C (inlet temperature) to approximately 58 °C, i.e., 132 % increment. On the other hand, a slight increase in temperature (i.e., < 27 °C) is predicted by numerical simulation at a higher flow rate (i.e., 0.138 cm3/s) at the same location (near the chamber wall). This less rise is due to the low residence time which causes the liquid to quickly leave the treatment area, thus, getting less pulse. The temperature soar in this condition is very low which is approximately 8 % of the inlet temperature. From the results obtained, flow rate control helps to reduce the temperature rise, thus, keeping the temperature at ambient temperature or slightly above the ambient and at the same time reducing the risk of the treated media from experiencing adverse effects on its physical attributes as a result of high temperatures.

Item Type:Article
Uncontrolled Keywords:flow pattern, numerical simulation, parallel plate treatment chamber, PEF, temperature distribution
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:99456
Deposited By: Widya Wahid
Deposited On:27 Feb 2023 06:46
Last Modified:27 Feb 2023 06:46

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