The Ocean Grazer: Designing a flexible underwater reservoir

Van den Elzen, Sietse (2018) The Ocean Grazer: Designing a flexible underwater reservoir. Integration Project, Industrial Engineering and Management.

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Abstract

The Ocean Grazer is a new offshore renewable energy harvesting concept currently developed and researched by the University of Groningen. It combines wave energy converter technology with on-site energy storage and wind turbines to generate and store renewable energy offshore. The latest concept of the Ocean Grazer features an underwater storage reservoir consisting of a rigid reservoir and a flexible storage reservoir, the so-called flexible bladder. We aim to contribute to the preliminary design of the flexible reservoir by conducting a literature review on similar products and by simulating charging and discharging the flexible bladder using COMSOL. The simulations are used to determine bladder deformation and internal stresses that occur in the bladder. Based on the internal stresses and the deformation that occurs, we conclude that a bladder thickness of 3 centimeters is sufficient. Moreover, we find that with the current design it is not possible to completely discharge the bladder. This results in a storage capacity loss and an efficiency loss.

Item Type:	Thesis (Integration Project)
Supervisor name:	Vakis, A.
Degree programme:	Industrial Engineering and Management
Thesis type:	Integration Project
Language:	English
Date Deposited:	09 Jul 2018
Last Modified:	11 Jul 2018 11:21
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/17706

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