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The single device pilot project 14 km offshore of San Francisco is estimated to cost 5,352,000. | The single device pilot project 14 km offshore of San Francisco is estimated to cost $5,352,000. | ||
===References=== | ===References=== | ||
Revision as of 00:28, 16 December 2011
Setting
Energetech, based out of Australia, has designed an offshore oscillating water column(OWC). A single device was first installed at Port Kembla, Australia in 2005. In 2004 a cost assessment for a commercial wave energy plant in San Francisco Bay was done by EPRI(Electric Power Research Institute Inc.) and prepared by Mirko Previsic.
Background
The OWC outputs energy by utilizing air compression and expansion, with the waves acting as a piston, to propel a Dennis Auld variable pitch turbine.This turbine allows an effcient direction-change in air flow. The turbine is connected to a generator to output the electricity and connects to the sub sea junction box trhough riser cables, and to the onshore grid through sub sea cables.
Device Specifications
Each device weighs approximarely 485 tons, has a width of 36 meters and a length of 24.5 meters.The device produces a noise level of about 73 decibles, and can produce an average of 20kW/m, in water depths of 52 meters, and 11.2kW/m at depths of 15 meters.
Cost Analysis
The single device pilot project 14 km offshore of San Francisco is estimated to cost $5,352,000.
References
http://learn.humboldt.edu/file.php/43150/Readings/Previsic%20-%20EPRI_San_Francisco_Wave_Energy_Conceptual_Design_2004.pdf http://www.gizmag.com/wave-power-owc/11122/picture/70087/ http://www.gizmag.com/wave-power-owc/11122/picture/70090/