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http://dx.doi.org/10.3795/KSME-B.2004.28.7.780

Heat Transfer Characteristics Around a Surface-Mounted Module Cooled by Piezoelectric Fan  

Park, Sang-Hee (금오공과대학교 기계공학부)
Park, Gyu-Jin (금오공과대학교 대학원 기계공학과)
Choi, Seong-Dae (금오공과대학교 기계공학)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.28, no.7, 2004 , pp. 780-788 More about this Journal
Abstract
This paper reports the fluid flow and heat transfer around a module cooled by forced air flow generated by a piezoelectric(PZT) cooling fan. The fluids are locally accelerated by a flexible PZT fan which deflects inside a fluid transport system of comparatively simple structure mounted on a PCB in a parallel-plate channel(450${\times}$80${\times}$700㎣). Input voltages of 20-100V and a resonance frequency of 23㎐ were used to vibrate the cooling fan. Input power to the module was 4W. The fluid flow around the module was visualized by using PIV system. The temperature distributions around a heated module were visualized by using liquid crystal film(LCF). The cooling effect using a PZT fan was independent of the vent area ratios at the channel inlet and was similar to the forced convection cooling. We found that the flow type was Y-shape and the cooling effect was increased by the wake generated by a piezoelectric cooling fan.
Keywords
Piezoelectric Cooling Fan; Module; PIV; Flow Visualization; Adiabatic Wall Temperature;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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