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Wave Energy Conversion Systems

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Questions and Answers

Which technology requires large tidal differences, limiting its applicability to only a few places in the world?

Wave power

Ocean thermal energy conversion

Tidal range power (correct)

Offshore wind energy

Apart from offshore wind energy, which are the three most well-developed technologies mentioned in the text?

Biomass energy, nuclear energy, and hydroelectric power

Tidal range power, wave power, and ocean thermal energy conversion (correct)

Solar power, geothermal energy, and hydroelectric power

Geothermal energy, wave power, and tidal range power

What is the main function of the reaction subsystem in a WEC?

Maintaining the WEC in position relative to the seabed (correct)

Providing power to the PTO system

Controlling the WEC's oscillating motion

Facilitating communication with the human interface

What is the primary function of the control (and instrumentation) subsystem in a WEC?

Automating the processes of the WEC Signup and view all the answers

What type of bodies are categorized as Wave Activated Bodies (WAB’s) in WECs?

Oscillating bodies Signup and view all the answers

Based on Newton’s second law, which forces are balanced by the inertial force acting on WEC’s captor?

Hydrodynamic and external forces Signup and view all the answers

What is the relationship between the power of an idealized ocean wave and its height and period?

The power is directly proportional to the square of the height multiplied by the period. Signup and view all the answers

How is the energy in ocean waves related to solar energy?

Energy in ocean waves is a direct conversion of solar energy. Signup and view all the answers

What characteristic of an idealized wave represents the distance between successive peaks or troughs?

Wave length Signup and view all the answers

When does further wave development occur in relation to existing waves?

When oscillations are in phase with existing waves Signup and view all the answers

What is the excitation force, Fe(t), computed as?

The convolution of the water surface elevation and impulse response function Signup and view all the answers

What is Ft(t) in the context of the text?

Non-causal impulse response function Signup and view all the answers

How is the radiation force, Fr(t) computed?

As a convolution of the body velocity and the radiation impulse response function Signup and view all the answers

What does m(∞) represent in the context of the text?

Added mass of the device at infinite frequency Signup and view all the answers