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Wave Energy
Published in Sergio C. Capareda, Introduction to Renewable Energy Conversions, 2019
One of Australia's main projects is a concept utilizing the oscillating water column technology. Electricity is generated by air flowing through the turbine. This is the third medium-scale demonstration unit installed near Port Kembia, New South Wales, Australia. The unit is grid-connected. One of its projects sank along the port, and newer projects were reinitiated. A full-scale commercial unit that is near the shore is called Green Wave and has a reported capacity of 1 MW, installed in 2013 along Port MacDonnell in South Australia. Another Australian project is the CETO wave power device. The device is being tested off Fremantle, Western Australia. It consists of a single piston pump attached to the sea floor with a float (buoy) connected to the piston. Waves cause the float to rise and fall, generating pressurized water that is piped to an onshore facility to drive a hydraulic generator or to run a reverse-osmosis desalination plant.
Multi-mode wave energy converters
Published in Dezhi Ning, Boyin Ding, Modelling and Optimization of Wave Energy Converters, 2022
Nataliia Y. Sergiienko, Boyin Ding
The CETO system, shown in Figure 5.6g, utilises an idea originally proposed by Srokosz [741], where a fully submerged buoy is connected to three tethers/mooring lines to absorb power from surge, heave, and pitch modes. The CETO 6 multi-moored unit evolved from a heaving CETO 5 prototype that could only absorb power from the vertical motion in waves. The CETO 5 system had a hydraulic power take-off unit, while, in the CETO 6 unit, each individual mooring line is connected to the direct mechanical drive PTO located inside the buoy hull. The shape of the buoy has been optimised such that the majority of the power is absorbed from the heave mode, minimising the LCOE value [633].
Renewable energy desalination; a sustainable approach for water scarcity in arid lands
Published in International Journal of Sustainable Engineering, 2021
Farbod Esmaeilion, Abolfazl Ahmadi, Siamak Hoseinzadeh, Mehdi Aliehyaei, Seyed Ali Makkeh, Davide Astiaso Garcia
Another available alternative to desalination by renewable energy is wave energy. These systems have a high investment cost and severe fluctuations in power output, which has led to focused attention on modifying these defects (Falcão 2014; Foteinis and Tsoutsos 2017; Salter et al. 2010). One of the studies in this context refers to the use of wave energy by Davis in 2005 with one-metre waves (or more) to produce power for the production of freshwater (Davies 2005). The first middle scaled wave energy-power grid system has been mounted in Australia that produced demanded power for freshwater production (Alkaisi, Mossad, and Sharifian-Barforoush 2017). The prime example of these systems is located in Garden Island-Australia (Viola et al. 2016). The system, which can desalinate seawater (150 m3/day) by RO method, utilises multiple buoys incorporated in CETO equipment and connected to the desalination pilot plant (DPP). The representation of the desired technology is exposed in Figure 16 (Viola et al. 2016).