Development of Two-Way Diffuser for Tidal Energy Conversion System

Norimasa Shiomi, Toshiaki Setoguchi, Yoichi Kinoue, Kenji Kaneko, Yuji Ohya

Research output: Contribution to conferencePaperpeer-review

2 Citations (Scopus)

Abstract

The experimental study was carried out to develop a new type of two-way diffuser suitable for a tidal energy conversion system. It is known that the power available from a stream of water is proportional to the cube of the free stream velocity of the current. Therefore, in order to take higher power output from the current, it is very important to construct the suitable system to increase the velocity of the current. For the wind turbine, it has reported that the wind speed passing through a turbine is dramatically increased by the use of the diffuser with a brim around a turbine. In this study, a new type of two-way diffuser suitable for a tidal energy conversion was developed applying the system to accelerate the wind speed for the wind turbine. The effects of the brim height and the outside body shape on the diffuser performance were experimentally investigated by the measurement of the pressure and the velocity distributions on the center axis of the diffuser and around the diffuser. The present study is the first one to clarify the effect of those on diffuser performance.

Original languageEnglish
Pages304-309
Number of pages6
Publication statusPublished - Dec 1 2003
EventProceedings of the Thirteenth (2003) International Offshore and Polar Engineering Conference - Honolulu, HI, United States
Duration: May 25 2002May 30 2003

Other

OtherProceedings of the Thirteenth (2003) International Offshore and Polar Engineering Conference
CountryUnited States
CityHonolulu, HI
Period5/25/025/30/03

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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