| Title |
An Experimental Study on the Pumping Characteristics of Diffuser-Nozzle Based Thermopneumatic Micropumps with Different Input Voltages and Frequencies |
| Authors |
정진(Jin Jeong) ; 채희문(Hee Moon Chae) ; 김창녕(Chang Nyung Kim) |
| Keywords |
열공압형 마이크로 펌프 ; 디퓨져 ; 노즐 ; 박막 ; 입력 전압 ; 주파수 Thermopneumatic micropump ; Diffuser ; Nozzle ; Membrane ; Input voltage ; Frequency ; |
| 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 thermopneu-matic micropump increases almost linearly over some range of the input voltage and de-creases almost linearly as the frequency increases. Also, the results show that the thermop-neumatic micropump can pump the fluid over a certain input voltage. This study can be uti-lized as basic data for design and evaluation of thermopneumatic micropumps. |