한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제16권3호
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  • Pages.52-58
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  • 2018
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  • 1598-8430(pISSN)
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  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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피에조 팬 냉각 성능 측정을 위한 실험장치 구축

Experimental Facility for Measuring the Cooling Performance of a Piezoelectric Fan

  • Oh, Myong Hun (Dept. of Mechanical Engineering, Myongji Univ.) ;
  • Park, Soo Hyun (Dept. of Mechanical Engineering, Myongji Univ.) ;
  • Ko, Jae Ik (Dept. of Mechanical Engineering, Myongji Univ.) ;
  • Choi, Minsuk (Dept. of Mechanical Engineering, Myongji Univ.)
  • 투고 : 2018.12.03
  • 심사 : 2018.12.28
  • 발행 : 2018.12.31
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초록

In this study, an experimental facility has been built to measure the cooling performance of a piezoelectric fan. The facility is composed of a heat source made of $50{\mu}m$ Ni-Cr foil, a piezoelectric fan and a rotary fan for cooling the heat source. For two cases where the foil is vertical or horizontal, the surface temperature on the foil has been measured by an IR camera with and without cooling and the cooling performance of both fans has been analyzed. With cooling by both fans, the rotary fan lowers the surface temperature of the foil as a whole, while the piezoelectric fan lowers the surface temperature at the center of the foil locally. It is also found that the cooling effectiveness of the piezoelectric fan is higher on the horizontal foil than on the vertical foil because the natural convection interferes with the jet from the piezoelectric fan.

키워드

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Fig. 1. Schematic diagram of experimental facility for measuring the cooling performance of a piezoelectric fan

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Fig. 2. Main components for the experimental facility

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Fig. 3. Horizontal configuration of a Ni-CR foil

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Fig. 4. Piezoelectric fan clamped by a block

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Fig. 5. Tip deflection of piezoelectric fan during a period

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Fig. 6. Temperature distribution on Ni-Cr foil without cooling

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Fig. 7. Temperature distribution on Ni-Cr foil with cooling by piezoelectric fan only

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Fig. 8. Temperature distribution on Ni-Cr foil with cooling by rotary fan only

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Fig. 9. Temperature distribution on Ni-Cr foil with cooling by both piezoelectric fan and rotary fan

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Fig. 10. Temperature distribution along the center line

Table 1. Static temperature at the center of Ni-Cr foil depending on the orientation of the facility

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참고문헌

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