1. The Study of Enhancement of Micro- Vibration-Induced Harvester based on Vapor Impacting J. C. Hsieh Advisor : J. C. Hsieh David. T. W. Lin David. T. W. Lin C. L. Lin Student : C. L. Lin Date: 2013.07.26

2. Summary Purpose Summary Purpose Vapor- generator Piezoelectric Material Experimental Apparatus Vapor- generator Piezoelectric Material Experimental Apparatus Optimization Shaker Vapor Generator Optimization Shaker Vapor Generator Enhance effect Micro heat pipe generator Enhance effect Micro heat pipe generator Experiment Introduction Results and discussions Conclusion Outline

3. www.company.com Introduction Introduction Summary P3 The development of new energy or energy harvesting are attracted much attention. A novel method about energy harvesting: The vapor impacting the piezoelectric material.

4. www.company.com What is heat pipe ? Working fluid evaporates to vapor by absorption heat. ‚Vapor migration along the cavity to condenser part. ƒVapor condenses to fluid and releasing heat. „Working fluid flows back to the evaporator part by capillary. Evaporator AdiabaticCondenser The heat pipe is a simple device that can transfer heat quickly from one point to another. P4

5. www.company.com Haapala et al setup a turbine inside the heat pipe to convert the momentum of the vapor to the power. The patent related to one kinds of the heat pipe generator with turbine is registered in 2008. Haapala et al.,1999U.S Patent, T. Nguyen, et al., 2008 P5

6. www.company.com The piezoelectric material belongs to the micro electro mechanical system(MEMS). The MEMS can be combined with the precision microelectronic technology and mechanical structure in the micro scale. What is the piezoelectric material ? P6

7. www.company.com Direct Piezoelectric Effect (mechanical energy to electrical energy) Converse Piezoelectric Effect (electric energy into mechanical energy) P7

8. www.company.com In this paper, the purpose is to enhance the output of the micro heat pipe generator by the optimization of the vibration-induced device.In this paper, the purpose is to enhance the output of the micro heat pipe generator by the optimization of the vibration-induced device. Our ultimate goal is to manufacture a piezoelectric heat pipe generator. Introduction Introduction Purpose P8

9. www.company.com Heater Tank Fixture Nozzle The schematic diagram of the vapor-generator Generator Part Vapor Part Experiment P9

10. www.company.com 13mm 25mm P10 PVDF

11. www.company.com Data logger Power Supply Hot Wire Anemometer Computer The schematic diagram of the experimental apparatus Digital Storage Oscilloscope Working fluid Heater P11

12. www.company.com (a) (b) P12

13. www.company.com The natural frequency of PVDF at 142.12Hz P13

14. www.company.com The schematic diagram of the experimental apparatus P14

15. www.company.com P15 The schematic diagram of original cantilever beam combined with PVDF

16. www.company.com Results and discussions P16 The optimal copper cantilever beam combined with PVDF at 60HzThe optimal aluminum cantilever beam combined with PVDF at 60Hz The optimal PE cantilever beam combined with PVDF at 60Hz

17. www.company.com The optimal copper cantilever beam combined with PVDF The optimal aluminum cantilever beam combined with PVDF P17 The optimal PE cantilever beam combined with PVDF

18. www.company.com The verify through shaker P18

19. www.company.com The optimal copper cantilever beam combined with PVDF The optimal aluminum cantilever beam combined with PVDF P19 The optimal PE cantilever beam combined with PVDF

20. www.company.com Results and discussions P20 Material Types Peak to Peak Voltage Improve 267.65% 272mV 712mV 808mV 1000mV The optimal copper cantilever beam combined with PVDF

21. www.company.com Material Types Peak to Peak Voltage 272mV 800mV 960mV 1070mV Improve 293.38% P21 The optimal aluminum cantilever beam combined with PVDF

22. www.company.com Material Types Peak to Peak Voltage Improve 370.59% 272mV 920mV 1070mV 1280mV P22 The optimal PE cantilever beam combined with PVDF

23. www.company.com The difference vapor velocity to hybrid PVDF P23

24. www.company.com The difference between one nozzle and two nozzles P24

25. Based on the focus of this paper, the Based on the focus of this paper, the enhanced effect has been achieved. enhanced effect has been achieved. The piezoelectric heat pipe generator will be practiced and approach the available usage. Conclusion P25

26. Reference [1] R. J. Pryputniewicz, U. S. Haapala, An investigation of a heat pipe turbine-generator system for production of energy, Proceedings of the 17th Intersociety Energy Conversion Engineering Conference (IECEC), 1982, pp. 1134 -1139. [2] D. Koyama, K. Nakamura, Electric power generation using vibration of a polyurea piezoelectric thin film, Applied Acoustics, 71 (2010), pp. 439–445. [3] M. O. Mansour, M. H. Arafa, S. M. Megaheda, Resonator with magnetically adjustable natural frequency for vibration energy harvesting, Sensors and Actuators A, 163 (2010), pp. 297–303. [4] Nguyen, T., Johnson, P., Akbarzadeh, A., Gibson, K., Mochizuki, M., Design, manufacture and testing of a closed cycle thermosyphon Rankine engine, J. Heat Recovery System and CHP, Vol. 15, 1994, No. 4, pp. 333,. [5] Johnson, P., Akbarzadeh, A., Thermosyphon Rankine engine for solar energy and waste heat applications, Int. Heat Pipe Conference, Minsk,1990, USSR.

27. Thank you for your time