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Alexander H. Slocum. Dündar, Gökhan Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Massachusetts Institute of Technology. Department of Mechanical Engineering 2012-10-26T18:10:42Z 2012-10-26T18:10:42Z 2012 2012 http://hdl.handle.net/1721.1/74461 813442540 Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012. Cataloged from PDF version of thesis. Includes bibliographical references (p. 88-91). Utility scale energy storage is needed to balance rapidly varying outputs from renewable energy systems such as wind and solar. In order to address this need, an innovative utility scale energy storage concept has been created by the Precision Engineering Research Group (PERG) at MIT. The concept is to build hollow concrete structures to act as lower reservoir, install pump/turbine units, deploy them under the ocean and use the hydrostatic pressure of the water column as an upper reservoir to run the turbine and generate electricity, and pump the water out of the structure to store energy. The result is similar to a conventional Pumped Storage Hydroelectric (PSH) facility that operates on land using lakes and dams. Evolution of the ORES project will be presented and design iterations discussed in detail. Each design option is evaluated to better understand advantages and disadvantages. Concrete related tests were conducted to develop manufacturing process and evolve design assumptions. Global sites are evaluated for ORES deployment including an intensive study on the Mediterranean and Japan. Our research shows that storing energy underwater is technically and economically feasible and has great potential. Our geographical evaluations show that the Gulf of Maine, off coast of California, Hawaii, Mediterranean and Japan have great potential for both wind and ocean depths that favor ORES deployment. by Gökhan Dündar. S.M. 93 p. eng Massachusetts Institute of Technology M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 Mechanical Engineering. Design and manufacture study of Ocean Renewable Energy Storage (ORES) prototype Design and manufacture study of ORES prototype Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="144fc4c2-9baa-4cc0-b265-1d42a5d94a62"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>Design and manufacture study of Ocean Renewable Energy Storage (ORES) prototype</Title> <Subtitle>Design and manufacture study of ORES prototype</Subtitle> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2012</PublicationDate> <Authors> <Author> <DisplayName>Dündar, Gökhan</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Mechanical Engineering.</Keyword> <Abstract>Utility scale energy storage is needed to balance rapidly varying outputs from renewable energy systems such as wind and solar. In order to address this need, an innovative utility scale energy storage concept has been created by the Precision Engineering Research Group (PERG) at MIT. The concept is to build hollow concrete structures to act as lower reservoir, install pump/turbine units, deploy them under the ocean and use the hydrostatic pressure of the water column as an upper reservoir to run the turbine and generate electricity, and pump the water out of the structure to store energy. The result is similar to a conventional Pumped Storage Hydroelectric (PSH) facility that operates on land using lakes and dams. Evolution of the ORES project will be presented and design iterations discussed in detail. Each design option is evaluated to better understand advantages and disadvantages. Concrete related tests were conducted to develop manufacturing process and evolve design assumptions. Global sites are evaluated for ORES deployment including an intensive study on the Mediterranean and Japan. Our research shows that storing energy underwater is technically and economically feasible and has great potential. Our geographical evaluations show that the Gulf of Maine, off coast of California, Hawaii, Mediterranean and Japan have great potential for both wind and ocean depths that favor ORES deployment.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>