Greenhough, Christopher; Pawling, Rachel; Bucknall, Richard; (2022) Wind Propulsion: Operation with Hydrokinetic Turbine Energy Recovery. In: Proceedings of the International Marine Design Conference (IMDC) 2022. The University of British Columbia (UBC)

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Abstract

Wind-assistance for ships has seen a resurgence of academic and commercial interest recently driven by stricter regulations on atmospheric pollution from their engines and encouraged by advancements in new wind-assistance technologies which can significantly reduce fuel consumption on many shipping routes. The power available from the wind is sporadic and does not necessarily match a ship’s operational profile. Considering this, additional flexibility may be offered when capturing wind energy by combining windassistance and energy recovery, such as via the propeller acting as a hydrokinetic turbine with the generated output being connected to the ship’s electrical power system. As such, during periods when the wind power exceeds the propulsion demand, the excess energy may be captured and stored. A wing kite and a fixed pitch propeller has been considered for a ship application, with different operational profiles applied under the assumption of a uniform distribution of wind headings. The thrust generated by the wing kite has been modelled together with ship resistance and propeller performance to characterise the potential for energy recovery. Without attempting any improvements to the propeller design, the results have indicated a good level of reduction in fuel consumption when using wind-assistance, which is significantly further improved using hydrokinetic energy recovery.

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