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CSME 2023/03
Volume 44 No.1
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11-21
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Thermal Performance of An Innovative Rotating Fan-Sink Radiator.
Shueei-Muh Lina, Didi Widya Utamab, Chihng-Tsung Liauha and Agustinus Purna Irawan c
aDepartment of Mechanical Engineering, Kun Shan University and Green Technology Research Center (GETRC), Tainan City 710303, Taiwan ROC.
bDepartment of Mechanical Engineering, Kun Shan University, Tainan City 710303, Taiwan ROC.
cDepartment of Mechanical Engineering, Universitas Tarumanagara, Jakarta 11440, Indonesia.
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Abstract:
The cooling device is traditionally composed of two components: (1) the conductive sink and (2) the axial fan. This research proposes a novel design of a rotating fan-sink radiator, with the rotating fan made of conductive material serving two functions: heat conduction and drawing in cold air. The numerical and experimental results for the rotating fan-sink are very consistent; two indexes of its performance are presented: (1) the thermal resistance as low as possible and (2) the ratio of thermal admittance to the required power consumption driving the rotating fan as high as possible. Cooling performance is improved by increasing the relative velocity of the conductive fan and the cooling fluid. The effects of the number of blades, the hub diameter, and the power consumption on heat transfer performance are investigated. This study discovered that the fan-sink's thermal resistance is considerably less than the literature under some parameters. Moreover, the thermal admittance-power consumption ratio is significantly greater than the other. Finally, some correlation formulas for the Nusselt number were established with less than 6% error compared to the experimental data.
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Keywords: rotating fan-sink, thermal admittance - power consumption, Nusselt number correlation formula.
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*Corresponding author; e-mail: liauhct@mail.ksu.edu.tw
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©
2023
CSME , ISSN 0257-9731
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