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From the 1st of February to the 30th of June 2016 Faguy TAMWO, a student at the Department of Electrical and Telecommunication Engineering of ENSPY, interned five (05) months at the CURES in order to write his end of courses dissertation. His work has focused on « Study of a piezoelectrically actuated micro-pump». This work aims at studying how a piezoelectrically actuated micro-pump is able to meet the needs for the dosage of small volumes of chlorine during the drinking water treatment process with a case study based on the drinking water treatment plant of Mefou (Yaounde)
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The research took place in several phases:
- Implementation of a global study of the issues and the potential of piezoelectric materials, and a review of piezoelectric actuators and their implementing methods in a pump.
- Proposal and modeling of a micro pump structure.
The structure was simulated with MATLAB Simulink software. The result obtained describes a pump with a flow of 200 ml / min, a frequency of 50 Hz, consuming a power of 22.5 W and a current 300 mA.
- Realization of a case study on the drinking water treatment plant of Mefou.
So, we should combine four (04) pumping modules whose performances have been mentioned abovewith a frequency of 40Hz in order to achieve the desired flow rate (37.5 l / h).
The designed micro pump is small, making it easy to carry. It has a low power consumption allowing a saving of 71.2% and it’s also scalable and flexible.
This results have been presented and defended in front of a jury at ENSP on july 13th, 2016