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- Book Chapter:
Orekan and Zhang
A detailed study of the UWPT system is presented in this chapter. Since the properties of the coils also contribute to the overall efficiency of the system, we studied the self-inductance, capacitance, and radiation resistance of the coil underwater. The findings show the practicality of transferring power wirelessly in ocean environment which could help reduce the need for oversized batteries…
- Book Chapter:
Tong
Water’s natural flowing movements, such as in rivers and reservoirs, can be used in the production of electricity. Furthermore, both the tidal range (the periodic rise and fall of the sea level) and the energy contained in flow and waves can be used in the ocean energy system. Both types of energy conversion are classed as renewable energies. While the typical use of hydropower has been…
- Book Chapter:
Harper et al.
This chapter discusses the applications and challenges for glass and carbon fibre composites in marine renewable energy devices. It uses a tidal turbine blade as a case study, describing the nature of the operating environment and resulting loads, the structural design process, material selection, manufacturing techniques and structural health monitoring. The chapter also discusses ongoing…
- Book Chapter:
Davies
Polymer matrix fibre reinforced composites have been employed in marine applications for over 50 years, and there is considerable experience of their long term behaviour. However, the recent development of systems designed to recover ocean energy, such as tidal turbines and wave energy generators, imposes much more severe constraints on materials than traditional structures. The requirements…
- Book Chapter:
Rony et al.
A submerged tension-leg-platform for offshore wind turbine combined with a heaving type point absorber wave energy converter is analysed considering different configurations of array of wave energy converters. A time domain simulation is performed for the combined platform using fully coupled aero-hydro-servo-elastic simulation. The analysis is performed to study the effect of different…
- Book Chapter:
Kamarlouei et al.
The objective of this paper is to present the experimental methodologies and challenges of testing a wave energy converter array, concentrically attached to a semisubmersible platform, and in presence of wind thrust forces and moments. The tower of a wind turbine has been placed in the center of the platform and connected to a mass-pulley system through a light weight cable to simulate the…
- Book Chapter:
Zhang et al.
Pressure retarded osmosis (PRO) and reverse electrodialysis (RED) have been studied recently for their potential in salinity gradient energy generation, the Gibbs energy harvestable when solutions of different concentrations are mixed. Polymer-based membranes are key components of these systems and therefore, the properties of these membranes largely determine the performance and applicability…
- Book Chapter:
Sarp and Hilal
Salinity gradient processes have a great potential to reduce the energy consumption in water treatment, especially when high salinity waters are in question. Even though the theoretical approaches for the salinity gradient processes are quite strong, there are still several issues before these processes can be applied in full scale. One of the most important challenges between theoretical and…
- Book Chapter:
Hong et al.
Reverse electrodialysis (RED) as a technique to harvest salinity gradient power has drawn increasing attention in the past decades. The key component of the RED stack, the ion exchange membrane (IEM), is limiting the development of salinity gradient power generation because of its suboptimal properties. These properties include electrical area resistance, permselectivity, and ion exchange…
- Book Chapter:
Tamburini et al.
This chapter is devoted to the description of a new class of heat engines based on salinity gradient technology and able to convert low-grade heat into power. The salinity gradient power (SGP) process is employed within a closed loop composed of two different sections: (i) the SGP unit devoted to the energy production, and (ii) a regeneration unit fed by the solutions exiting from the SGP unit…
- Book Chapter:
Dawson et al.
Composite materials are the natural choice for the construction of tidal energy blades; their high strength, good environmental resistance and the ease with which they may be used to form complex shapes means that they are well suited to the application. The design of MW-scale tidal energy blades has evolved over a number of years, keeping step with the requirements of turbine developers as…
- Book Chapter:
Jaksic et al.
The structural design of marine tidal turbine blades is governed by the hydrodynamic shape of the aerofoil, extreme loadings and composite material mechanical properties. The design of the aerofoil, chord and twist distribution along the blade is generated to optimise turbine performance over its life time. Structural design gives the optimal layout of composite laminae such that ultimate…
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