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Thermal performance investigation of a plate fin heat sink equipped with twisted tape and perforated twisted tape
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Document Title
Thermal performance investigation of a plate fin heat sink equipped with twisted tape and perforated twisted tape
Author
Nilpueng K., Wongwises S.
Name from Authors Collection
Affiliations
Research Centre for Combustion Technology and Alternative Energy (CTAE), Department of Power Engineering Technology, College of Industrial Technology, King Mongkut's University of Technology North Bangkok, 1518 Bangsue, Bangkok, 10800, Thailand; Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, 126 Bangmod, Bangkok, 10140, Thailand; National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
Type
Article
Source Title
Journal of Thermal Science and Technology
ISSN
18805566
Year
2021
Volume
16
Issue
2
Open Access
All Open Access, Bronze
Publisher
Japan Society of Mechanical Engineers
DOI
10.1299/jtst.2021jtst0024
Format
Abstract
The concept of heat transfer enhancement in a plate fin heat sink (PFHS) using twisted tape is presented. The airflow behavior in the flow channel and heat sink performance are investigated at the Reynolds numbers between 2000 and 5000. The twisted tape and perforated twisted tape with twist ratio between 2.5 and 3.5 are equipped between the fins of the PFHS. For perforated twisted tape, the holes are drilled along the twisted tape length with the ratio of perforation diameter to twisted taped width (d/W) between 0.2 and 0.6. The heat transfer coefficient and pressure drop are enhanced by decreasing the twist ratio and increasing the Reynolds number and the d/W ratio between 0.2 and 0.4. However, they are dropped when the d/W ratio higher than 0.4. The highest thermal performance factors of the plate fin heat sink equipped with twisted tape (PFHSTT) and the plate fin heat sink equipped with perforated twisted tape (PFHSPTT) are 1.28 and 1.33, respectively. The correlations of the Nusselt number and friction factor related to twist ratio and d/W ratio are generated and proposed for designing and selecting in the future. © 2021 The Japan Society of Mechanical Engineers.
Keyword
Heat transfer enhancement | porosity | Swirl flow | Twist ratio
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
N/A
Rights
N/A
Publication Source
Scopus