Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experimental Study on the Pumping Characteristics of Diffuser-Nozzle Based Thermopneumatic Micropumps with Different Input Voltages and Frequencies

디퓨져와 노즐을 이용한 열공압형 마이크로 펌프의 입력 전압과 주파수에 따른 펌핑 특성에 관한 실험적 연구

  • Jeong, Jin (Department of Mechanical Engineering, Kyunghee University) ;
  • Chae, Hee-Moon (Department of Mechanical Engineering, Kyunghee University) ;
  • Kim, Chang-Nyung (College of Advanced Technology, Kyunghee University)
  • 정진 (경희대학교 기계공학과) ;
  • 채희문 (경희대학교 기계공학과) ;
  • 김창녕 (경희대학교 테크노공학대학(산학협력기술연구원))
  • Published : 2007.09.10
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Abstract

This study has been conducted to investigate the pumping characteristics of diffuser-nozzle based thermopneumatic micropumps with different input voltages and frequencies. In this study, the displacements of the membrane have been obtained changing the input voltage and frequency in load-free state because it is very difficult to measure the displacement of the membrane in an actual load state. It has been found that the amplitude of the membrane displacement increases as the input voltage increases. The pressure head of the thermopneumatic micropump increases almost linearly over some range of the input voltage and decreases almost linearly as the frequency increases. Also, the results show that the thermopneumatic micropump can pump the fluid over a certain input voltage. This study can be utilized as basic data for design and evaluation of thermopneumatic micropumps.

Keywords

References

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