TY - JOUR TI - The Extractable Power From A Channel Linking A Bay To The Open Ocean AU - Blanchfield, J AU - Garrett, C AU - Wild, P AU - Rowe, A T2 - Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy AB - Interest in the power potential of tidal streams is growing worldwide. While the latest assessment for Canadian coastlines estimates a resource of approximately 42 GW, these results are based on the average kinetic energy flux through the channel. It has been shown, however, that this method cannot be used to obtain the maximum extractable power for electricity generation. This work presents an updated theory for the extractable power from a tidal stream in a channel linking a bay to the open ocean. The maximum average extractable power from a channel linking a bay to the open ocean may be estimated, within approximately 15 per cent, as 0.22ρ gaQ0, where a is the amplitude of the dominant tidal constituent in the open ocean and Q0 is the maximum volumetric flowrate in the undisturbed state. DA - 2008/05// PY - 2008 VL - 222 IS - 3 SP - 289 EP - 297 UR - http://pia.sagepub.com/content/222/3/289 DO - 10.1243/09576509JPE524 LA - English KW - Tidal KW - Marine Energy ER -