• Title/Summary/Keyword: Funnel Type Energy Harvester (FTEH)

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A study on the underwater energy harvesting characteristics of a funnel type macro fiber composite energy harvester (수중에서 퍼넬형 macro fiber composite 에너지 하베스터의 에너지 수확 특성)

  • Jongkil Lee;Jinhyo An
    • The Journal of the Acoustical Society of Korea
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    • v.42 no.1
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    • pp.57-66
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    • 2023
  • In this paper, it was investigated how the amount of energy harvesting will be varied from the FTEH which has inlet area is wider than outer area and attaching cantilever type MFC (Macro Fiber Composite) using by theoretical and experimental approaches. When MFC length increased 50 % vibration displacement also increased 3.5 times. When thickness decreased vibration displacement increased 30.9 times. In underwater tank experiments FTEH with spiral screw, flexible support, vertical direction fabrication cases showed maximum energy harvesting more 5 times than the case of MFC installed horizontally without spiral screws and on rigid supports. When the flow speed of 0.24 m/s FTEH's optimal resistance applied 4,10 kΩ, energy storage in the capacitor was measured 4 ㎼·s during 350 seconds. It was confirmed that the charging energy can be increased by lengthening the capacitor charging time of the large-area MFC installed vertically on the flexible support at high flow speed.