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Bayesian networks with imprecise datasets: Application to oscillating water column
Published in Stein Haugen, Anne Barros, Coen van Gulijk, Trond Kongsvik, Jan Erik Vinnem, Safety and Reliability – Safe Societies in a Changing World, 2018
H.D. Estrada-Lugo, E. Patelli, M. de Angelis, Daniel D. Raj
An Oscillating Water Column (OWC) is a type of the so-called wave energy converters that capture the energy that sea waves deposit once reaching the named structure. The popularity of this type of energy converters has increased over the last few decades, since it is an alternative for the clean energy production (Falcão 2010). The structure of an OWC consists of a chamber, partially submerged in the sea, generally with two orifices. One is typically at the top of the chamber inside which turbine is placed, and the other one is below the water line facing the coming sea waves, see Figure 3. An entombed mass of water column formed inside the chamber oscillates as a result of the wave inside in the structure. This, in turn, drives an air flow through the orifice coupled to a turbine, thus generating electricity (Cruz 2008).
Tidal and Wave Power
Published in Bella H. Chudnovsky, Transmission, Distribution, and Renewable Energy Generation Power Equipment, 2017
There are several types of wave energy technologies. One type uses oscillating water column (OWC) devices to generate electricity at the shore using the rise and fall of water within a cylindrical shaft (see Section 10.1.2.2). The rising water drives air out of the top of the shaft, powering an air-driven turbine. Third, a tapered channel, or overtopping device can be located either on or offshore. They concentrate waves and drive them into an elevated reservoir, where power is then generated using hydropower turbines as the water is released.
Ocean Wave Energy Harvesting
Published in Alireza Khaligh, Omer C. Onar, Energy Harvesting, 2017
Another way to harness wave energy is with an oscillating water column (OWC) that generates electricity from the wave-driven rise and fall of water in a cylindrical shaft or pipe. The rising and falling water drives air into and out of the top of the shaft, powering an air-driven turbine as shown in Figure 4.15.
Shape optimization of a bidirectional impulse turbine via surrogate models
Published in Engineering Applications of Computational Fluid Mechanics, 2018
K. Ezhilsabareesh, Shin Hyung Rhee, Abdus Samad
Ocean wave generated by the action of wind over the water surface is a source of enormous renewable energy. Harnessing wave energy is difficult because of uncertainty in ocean waves, natural calamities, etc. The oscillating water column (OWC) (Figure 1), a widely used device to extract the power from the waves, has a cylindrical column in which wave rises and replicates the action of piston. This pressurizes the trapped air in the cylinder, and the air drives a bidirectional turbine. The airflow is reciprocating in nature. The turbine rotates in one direction irrespective of the airflow direction (Setoguchi, Santhakumar, Maeda, Takao, & Kaneko, 2001). Hence, it is called a bidirectional turbine or bidirectional flow turbine. There are several types of bidirectional turbines, and impulse turbine is one among them.
Numerical analysis and performance assessment of trapezoidal oscillating water columns
Published in Ships and Offshore Structures, 2023
Renewable energy conversion by Oscillating Water Column (OWC) is very common in the offshore environment. As the shoreline of every country in the world is possessed with ocean wave energy, the energy conversion by OWC is quite low even though several designs could show promising efficiency improvements. Many designs on experimental and numerical studies proved the capability to be more efficient of OWC wave energy converter as compared to other types of wave energy converters. Some of the key literature in OWC are listed in chronological order.