Development of micropump in fuel cell application using micro electro-mechanical system (MEMS) machining method = membangunkan pam mikro untuk penggunaan sel bahan api menggunakan sistem mikro elektro-mechanical (MEMS)

摘要

The need for, cooling in advance thermal systems is ever in demand. The administration of such cooling will need miniaturization of the current pumping system for small scale use. A valve less pump is one of the methods to create a small microscale flow rate pump. It has intake and outlet on the same side. Advances in fluidudmechanics are able to capture the working principles of such pumps and give a close approximation of the pump characteristics. The fundamental aspect that a micropumpudwill endure is analysed from fluid mechanics analysis, is a key in the development of the model. The sizing and criteria of the pump is set based on fluid equations of mass, momentum and energy. A design is laid out by using computer aided design (CAD) based on the voltage frequency that will be applied to the piezomaterial. Theudmovement of the material due to current will cause the fluid to move as the material will act as a diaphragm. The design is then analysed using computational fluiduddynamics (CFD) from the frequency inputs and a steady flow design is simulated. The reading of the small flowrate is analysed and a proper method of designing the valve less pump is gathered.