Pan, Chunlan and Alqahtani, Aisha M. and Wei, Haoran and Sulaiman, Nadzril and Elsiddieg, Awatif M. A. and Ghoushchi, S. P. (2024) Heat transfer enhancement of a heat exchanger using novel multiple perforated magnetic turbulators (MPMT): An experimental study. International Journal of Thermal Sciences, 195. ISSN 1290-0729, DOI https://doi.org/10.1016/j.ijthermalsci.2023.108642.
Full text not available from this repository.Abstract
The magnetic turbulator and electromagnetic vibration (EMV) methods have recently been employed to enhance heat transfer in heat exchangers. This method involves placing a magnetic oscillator inside the tube and attaching a magnet with specific dimensions to this oscillator. Creating an AC magnetic field near the tube causes the magnet and the oscillator to vibrate, acting as a magnetic turbulator. In this study, multiple perforated magnetic turbulators were used inside the tube of a heat exchanger for the first time, and their impact on hydrothermal parameters was assessed. Various factors were examined, including perforation diameter, pitch, and fluid flow rate. The thermal enhancement factor (TEF) was used to identify the optimal configuration. The results showed that simple and perforated turbulators increased heat transfer up to 156% and 150%, respectively. However, the pressure drop in the presence of these turbulators was up to 1.97 and 1.86 times higher than that of a simple heat exchanger. In addition, the maximum value of TEF was observed in the presence of a perforated magnetic turbulators with a hole diameter of 2 mm and a hole pitch of 12 mm. This turbulator was the optimal choice, providing a TEF equivalent to 2.06.
| Item Type: | Article |
|---|---|
| Funders: | Outstanding Youth Special Project of 2023 “ Jiangsu Science and Technology Think Tank Talent Program [Grant no. JSKIZK2023123], Taizhou Association for Science and Technology in Jiangsu Province, Princess Nourah Bint Abdulrahman University |
| Uncontrolled Keywords: | EMV; Heat transfer enhancement; Multi magnetic turbulator; Pressure drop; Thermal enhancement factor |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Deputy Vice Chancellor (Academic & International) Office > Asia-Europe Institute |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 07 Apr 2025 04:57 |
| Last Modified: | 07 Apr 2025 04:57 |
| URI: | http://eprints.um.edu.my/id/eprint/44317 |
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