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Influence of tidal parameters on SeaGen flicker performance
Joseph MacEnri1, Matthew Reed, Torbjörn Thiringer
1Formerly of ESBI Engineering, ESB International Ltd, Dublin, Republic of Ireland. joemacenri@gmail.com
Flicker emissions from the SeaGen tidal energy converter (TEC) were analyzed against various tidal conditions. Results indicate flicker is primarily dependent on tidal speed, with no significant correlation to other parameters like water depth or turbulence.
Area of Science:
- Marine renewable energy
- Ocean engineering
- Environmental monitoring
Background:
- Tidal energy converters (TECs) offer a predictable renewable energy source.
- Understanding the environmental impact, such as light flicker, is crucial for TEC deployment.
- The SeaGen 1.2 MW tidal energy converter is a significant prototype for marine energy generation.
Purpose of the Study:
- To analyze the flicker emissions from the SeaGen TEC.
- To investigate the relationship between flicker emissions and various tidal parameters.
- To assess the influence of asymmetrical design and crossbeam on flicker.
Main Methods:
- Collected flicker data from over 90 measurement periods (10 minutes each).
- Measured flicker emissions against tidal parameters: flood/ebb tides, tidal speed, water depth, and turbulence.
- Performed statistical and graphical analysis to determine correlations.
Main Results:
- Flicker emissions showed a strong dependency on tidal speed.
- No significant relationship was found between flicker emissions and flood/ebb tides, water depth, or turbulence intensity.
- The asymmetrical design of the SeaGen TEC did not significantly affect flicker emissions.
Conclusions:
- Tidal speed is the primary driver of flicker emissions from the SeaGen TEC.
- Environmental factors other than tidal speed have a negligible impact on flicker.
- The study provides valuable data for assessing the visual impact of tidal energy generation.
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