연료전지 Stack Cooling을 위한 압전 공진펌프 설계에 관한 연구 = A study on resonant pump for the stack cooling of fuel cell system

다국어 초록 (Multilingual Abstract)

In the stack cooling of household fuel cell system(1kW), cooling water pump has been demanded for compact size, low power consumption and constant delivery-performance of the cooling water. To obtain sufficient performance for practical application in above-mentioned area, in this paper, we studied on piston pump using multi-layer PZT actuator(5mm×5mm×18mm). The piston pump used a multi-layer PZT(16㎛ displacement at 100 Vpp) as a reciprocating motion actuator and structure producing resonance to amplify the displacement of a moving piston. The pump composed of two springs and the piston that could be supported a multi-layer PZT. We also decided the mass of moving parts, the stiffness coefficient of two springs with simulation. In this simulation, we predicted the resonant displacement and frequency of the pump. Then, based on the obtained results, without a mechanical amplification, we could make a large displacement.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 운동부 모델링
• 3. 시뮬레이션
• 4. 공진펌프 설계
• 5. 공진펌프 성능실험
• 6. 결론
• 참고 문헌