DEMCON is the newest company that joins our network. This network is a collaboration between companies, organizations and research institutes that have declared active support and a principal willingness to participate in the further development of the Ocean Grazer. Individual members will be approached to participate in specific research projects.

 

Logo DEMCON 

About DEMCON

DEMCON is a high-end technology supplier of products and systems, with high-tech, industrial systems & vision, optomechatronic, embedded and medical systems as focus areas. DEMCON is a business that supports clients with a wide range of competencies. As a system supplier, DEMCON can meet the entire needs of its clients, from proof of principle, prototype and pre-production to serial production. DEMCON is certified for ISO 9001:2008 and ISO 13485:2003. (DEMCON, 2017)

Last week (27-08-2017) the Ocean Grazer was present at EWTEC2017 in Cork, Ireland. The presentation given was titled: "A Frequency-Domain Model for a Novel Wave Energy Converter". The corresponding conference paper can be found under the same name.

EWTEC is short for European Wave and Tidal Energy Conference and is an international technical and scientific conference, focused on ocean renewable energy and widely respected for their commitment to maintain high standards of academic and industrial contributions. (EWTEC, 2017)


Mid-July, Ocean Grazer was also invited in two wave energy sessions during IFAC 2017 World Congress, in which our conference paper: "Towards Ocean Grazers's Modular Power Take-Off System Modeling: A Port-Hamiltonian Approach" was part of the presentations.

IFAC 2017 is a World Congress of the International Federation of Automatic Control. "Our multinational federation is concerned with automatic control and its representation in the fields of engineering, science and the impact of control technology on society." (IFAC, 2017)

Two conference submissions have been accepted and will be presented at the 2nd International Conference on Renewable Energies Offshore (Renew 2016) in Lisbon, Portugal from October 24-26, 2016.
http://www.centec.tecnico.ulisboa.pt/renew2016/

The first submission deals with the preliminary analysis of the energy extraction of the floater blanket, and a control strategy to maximize the extracted energy of an effective multi-piston pump, which is the main building block of the Ocean Grazer WEC.
http://hdl.handle.net/11370/6d7a3524-6bf5-47b1-b449-835532e7face

The second submission presents a lumped dynamical model of the Ocean Grazer WEC, which is later used to illustrate the storage capabilities of the OG-WEC by a proposed revenue maximization strategy.
http://hdl.handle.net/11370/ceebc399-747f-4cda-a69e-528fc72504f0

On the video page we have uploaded four new videos, demonstrating various components and subsystems during the development of the Ocean Grazer.

- Improved Wave Tank: The wave tank is used to perform experiments on various Ocean Grazer components as well as subsystems. This video shows a 1:35 scaled version of the floater blanket, consisting of one floater row with ten floater elements. The load on each floater is adaptable to simulate the effect of different piston configurations.
- Multi-ball Checkvalve: The multi-ball checkvalve consists of balls with different densities, each opens and close with a different velocity to maximize the performance. This video shows an early example of a multi-ball checkvalve.
- Multi-Piston Pump demonstration: This video shows a demonstration of the multi-piston-pump system with activation mechanism as part of the pumping system of the Ocean Grazer. This system is key for its adaptability, the load on each floater can be varied by using a combination of different sized pistons.
- Particle Tracing: This video shows a test trail of tracing the wave motion with particles. The floater blanket is extracting energy from the wave which can be analyzed by looking at the motion of the wave particles.

The Ocean Grazer is expanding its network with the joining of Djons. This network is a collaboration between companies, organizations and research institutes that have declared active support and a principal willingness to participate in the further development of the Ocean Grazer. Individual members will be approached to participate in specific research projects.

About Djons

Djons has many years of experience in the mechanical engineering sector and is fully specialised in bearing solutions. Apart from bearings they also supply Seals and Sealing Applications, Engineering Plastics and CNC Turning and Milling products.