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Session: Poster Session and Sponsors Exhibition
Session starts: Thursday 22 September, 14:00

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Thierry Bouchet (DCNS)
Brice Hermant (DCNS)

Abstract:
DCNS has both a strong experience and an outstanding know-how in the field of engineering of complex naval systems. The group is now investing into ocean energy technologies such as tidal turbines, floating offshore wind turbines, wave energy and OTEC (Ocean Thermal Energy Conversion). OTEC principle is a thermodynamic cycle based upon the use of the temperature difference between the cold deep seawater and the warm surface seawater to deliver steady baseload electrical flow of power to the grid using refrigerating fluid in a Rankine cycle (for example: organic fluid). DCNS roadmap ensures at minimizing the technical risks associated to the development of this technology. Thus, DCNS recently achieved an OTEC landbased prototype using heating pump in place of cold and warm seawater supply. Measurements on this one are currently underway and will be used in order to modify if necessary the various models of cycle and exchangers behavior developed on software named Equation Engineering Solver. Furthermore this one ensures to have a best understanding of the control of this type of cycle and will enable to qualify various equipments for a 10MW full-scale OTEC power plant. In same time, regarding the use of seawater in this application, DCNS analyzes risks and adapted solutions for corrosion and bio-fouling problems with DCNS group's expert with the ability to test in seawater environment exchangers specimens or cold seawater pipes specimens.