A magnetic/piezoelectric-based thermal energy harvester

Tien-Kan Chung, Ujjwal Shukla, Chia Yuan Tseng, Chin Chung Chen, Chieh Min Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

In this paper, we demonstrate a non-contact magnetic/piezoelectric-based thermal energy harvester utilizing an optimized thermal-convection mechanism to enhance the heat transfer in the energy harvesting/converting process in order to increase the power output. The harvester consists of a CuBe spring, Gadolinium soft magnet, NdFeB hard magnets, frame, and piezoelectric PZT cantilever beams. According to the configuration, the energy harvesting/converting process under a temperature-difference is cyclic. Thus, the piezoelectric beams continuously oscillate and subsequently produce voltage responses due to the piezoelectric effect. The maximum voltage response of the harvester under a temperature-difference of 25°C is 16.6 mV with a cycling frequency of 0.58 Hz. In addition, we compare the testing result of the harvester utilizing the new thermal-convection mechanism reported in this paper and using previous thermal-convection mechanism reported elsewhere. According to the comparison, the results show the harvester utilizing the new thermal-convection mechanism has a higher cycling frequency resulting in a higher power output than the previous mechanism.

Original languageEnglish
Title of host publicationActive and Passive Smart Structures and Integrated Systems 2013
DOIs
StatePublished - 4 Jun 2013
EventActive and Passive Smart Structures and Integrated Systems 2013 - San Diego, CA, United States
Duration: 10 Mar 201314 Mar 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8688
ISSN (Print)0277-786X

Conference

ConferenceActive and Passive Smart Structures and Integrated Systems 2013
CountryUnited States
CitySan Diego, CA
Period10/03/1314/03/13

Keywords

  • Energy harvester
  • Magnetic
  • Piezoelectric
  • Power generator
  • Temperature
  • Thermal
  • Thermomagnetic

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  • Cite this

    Chung, T-K., Shukla, U., Tseng, C. Y., Chen, C. C., & Wang, C. M. (2013). A magnetic/piezoelectric-based thermal energy harvester. In Active and Passive Smart Structures and Integrated Systems 2013 [86880M] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8688). https://doi.org/10.1117/12.2009434