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Entropy 2018, 20(12), 979;

Heat Transfer Performance of a Novel Multi-Baffle-Type Heat Sink

1,3,4,* and 1,*
Key Laboratory of Electronic Equipment Structure Design, Ministry of Education, School of Electromechanical Engineering, Xidian University, Xi’an 710071, China
Department of Mechanical, Aerospace and Nuclear, University of Rensselaer Polytechnic Institute, Troy, NY 12180, USA
Xidian-Ningbo Information Technology Institute, Xidian University, Xi’an 710071, China
Department of Mechanical Engineering, University of Alberta, Edmonton, AB T6G1H9, Canada
Authors to whom correspondence should be addressed.
Received: 14 November 2018 / Revised: 8 December 2018 / Accepted: 13 December 2018 / Published: 17 December 2018
(This article belongs to the Section Thermodynamics)
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A new type of multi-baffle-type heat sink is proposed in this paper. The heat-transfer coefficient and pressure drop penalty of the employed six heat sink models are numerically investigated under five different inlet velocities. It is shown that Model 6 (M6) has excellent heat transfer performance as its heat-transfer coefficient reaches a value of 1758.59 W/m2K with a pressure drop of 2.96 × 104 Pa, and the temperature difference between the maximum and the minimum temperature of the heating surface is 51.7 K. The results showed that the coolant for M6 is distributed evenly to each channel at the maximal degree. The phenomena of the maldistribution of temperature is effectively improved. Moreover, the thermal resistance and thermal enhancement factor for the six models is also examined. M6 possesses the lowest total thermal resistance and largest thermal enhancement factor compared to the other five models. Furthermore, an experimental platform is set up to verify the simulation results obtained for M6. The simulated heat-transfer coefficient and pressure drop values agree well with the experimental results. View Full-Text
Keywords: multi-baffle-type; heat transfer; heat sink; friction factor multi-baffle-type; heat transfer; heat sink; friction factor

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Cao, X.; Liu, H.-L.; Shao, X.-D. Heat Transfer Performance of a Novel Multi-Baffle-Type Heat Sink. Entropy 2018, 20, 979.

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