WAVE ENERGY
Name: Mina Malak Tadros
Supervised by
Dr/ Elsadek H.Noureldeen
AGENDA
Introduction
Wave Energy
Converters
Technology
Advantages &
Disadvantages
Locations
Sources
INTRODUCTION
Wave energy is created by the movement of the
ocean’s surface.
Waves, also known as ocean energy or sea
wave energy, have an enormous energy
potential that is available around the clock and
free of charge, that if fully exploited could
satisfy very large part of the worldwide demand
for power.
Waves travel vast distances across oceans at
great speed. The longer and stronger the wind
blows over the sea surface, the higher, longer,
faster and more powerful the sea is.
Wave Energy
WAVE ENERGY CONVERTERS
Wave Energy
4
WHAT IS WAVE ENERGY CONVERTER?
Wave energy converters (WECs) are devices that convert the kinetic and potential energy associated with a
moving ocean wave into useful mechanical or electrical energy. This energy is the largest estimated global
resource form of ocean energy.
Different types of wave energy converters:
• Attenuators
• Point Absorbers
• Overtopping/terminator device
• Oscillating wave surge converter
• Oscillation water column
• Submerged pressure differential
• Bulge wave
• Rotating mass
Wave Energy
5
Oscillating Wave Surge
Oscillating Water Column
Overtopping Terminator
Point Absorbers
Attenuator
Wave Energy
6
TECHNOLOGY
There are five main types of
technology used for Wave
energy including;Absorbers,
Attenuators, Oscillation water
columns, overtopping and
Inverted- Pendulumdevice.
Oscillation Water Columns
(OWC) : is a partially
submerged enclosed structure.
the upper part of the structure,
above the water, is filled with
air and incoming waves are
funneled into the bottom part
of the structure..
ADVANTAGES &DISADVANTAGES
Advantages
Disadvantages
• Wave energy is renewable and
• Machines can cause harm to
free as it comes from ocean so
no fuel needed and no waste
produced.
• Wave energy doesn’t generate
pollution.
fishes.
• Strong waves may destroy the
device.
• Weak performance in rough
weather.
• No need for power storage as it
is generated from ocean.
• No damage to land.
• High maintenance costs.
• The location : only power plants
and towns near the ocean will
• Efficient energy production.
benefit directly from it.
• It is a reliable source.
Wave Energy
8
CURRENT AND POSSIBLE WAVE FARMS
• Since wave energy is still relatively new and some disadvantages of wave
energy serve as a barrier to its expansion, there are fewer areas that
currently have or are installing wave farms. Some main areas for wave
farms are Portugal, the United Kingdom, Australia, and the United States.
• There are also possibilities in Russia and Italy for potential wave farms.
Wave Energy
9
WHY WAVE POWER
CAN’T SOLVE THE ENERGY
CRISIS
We haven’t figured out an efficient way to use
waves to spin turbines As we will need a more
complicated system to move the turbine as the
wave is oscillating motion of small regions of
the substance We haven’t been able to get any
of these turbine to spin fast enough to make
electricity Building in the ocean is expensive as
it is exposed to saltwater, sand debris and
storms so we have to spend more money
The waves come in various shapes and sizes, so
it’s hard to design a wave energy convertor to
work in unpredictable conditions.
Waves may be plentiful and pack a real energy
punch, but they’re also unstable.
Wave Energy
SOURCES
• https://openei.org/wiki/Wave_Energy#:~:text=Wave%20energy%20(or%20wave%20po
wer,desalination%2C%20and%20pumping%20of%20water.
• https://www.linquip.com/blog/what-is-waveenergy/#Different_types_of_wave_energy_converters
• http://www.coastalwiki.org/wiki/Wave_energy_converters
• https://journals.sagepub.com/doi/pdf/10.1243/09576509JPE782
• https://www.ipcc.ch/site/assets/uploads/2018/03/Chapter-6-Ocean-Energy-1.pdf
Wave Energy
11