Transcript Document

Team 5
Carlos Sosa
Michael Horta
Maria Medina
According to U.S. Energy Information Administration
oUnits are in Quadrillion Btu
o British thermal unit (Btu)
o Quadrillion = 1,000,000,000,000,000
o 1 Btu = 0.29307107W
o 154,975,103 GW were consumed in 2012
oIn the next 50 years the world population is expected
to increase by 2 billion
oIf each of those new 2 billion individuals uses one
50W light bulb
o50x200000000 = 100,000,000,000W = 100GW of
more energy consumption to account for
o This table compares the US average levelized
electricity cost (LEC) in dollars per kilowatt-hour
for both non-renewable and alternative fuels
o LEC is the total cost of build and operate a power
plant over its life divided by the total power output
over its lifetime
o Hydro energy is not the cheapest initially, however
it does show better results then other forms of
power
o With the right investment and technology it can
have promising results
Power Plant
Type
Cost ($/KW-hr)
Coal
$0.10-0.14
Natural Gas
$0.07-0.13
Nuclear
$0.10
Wind
$0.08-0.20
Solar PV
$0.13
Solar Thermal
$0.24
Geothermal
$0.05
Biomass
$0.10
Hydro
$0.08
These results are based on US EIA statistics and analysis from Annual Energy Outlook 2014
o EPRI estimates the total wave energy
resource along the outer continental is at
2,640 TWh/yr
o 1 TWh/yr of energy will supply around
93,850 average U.S. homes with power
annually
http://www.irishtimes.com/polopoly_fs/1.1925677.1410533549!/image/image.jpg_gen/derivatives/box_620_330/image.jpg
o Wave energy devices being developed and
tested for diverse regions, and a variety of
technologies have been proposed to capture
the energy from waves all around the world
o Wave technologies have been designed to be
installed in the nearshore, offshore, remote,
and far offshore locations
http://upload.wikimedia.org/wikipedia/commons/9/93/Elevation.jpg
oFor now, the best wave generator technology in place in the United
Kingdom and is producing energy at an average cost of 7.5 cents kWh
oElectricity generated by large scale coal burning power plants costs
about 2.6 cents per kWh
o2 cent per kWh is the projected goal to set for renewable wave
energy
First known patent for ocean
wave energy by Girard and
his son in Paris, France
1799
1903
The first oscillating watercolumn type of wave-energy
device made by BochauxPraceique near Bordeaux,
France
Yoshio Masuda’s experiments
took over the modern search Ocean Power Technologies
for harvesting wave energy
founded
1940’s
1973
The oil crisis gave
renewable energies new
momentum to be further
researched by many
universities worldwide
1997
1998
Pelamis Wave Power
founded
The Clean Energy Tax
Stimulus Act
2008
Structure
Methods of Generating Power
o Hexagonal shaped designo Waves compress air in chamber causing
the air to be forced upward and spin the
o Made of pvc pipes filled with
propeller
polyurethane foam
o Wave movement forces the magnet to
o Structure will enclose a power
move up and down inside the coil and
generator
generate a current
oIncorporate a jellyfish-like
appearance
oEnclose is a bubble-like material
o Protect marine life
oAdd florescent colors
o Led or glow in the dark paint
o Improve visibility in the dark and
under harsh weather
Clockwise Free Rotation
o Freewheel or overrunning clutch is a device in
a transmission that disengages the driveshaft
from the driven shaft when the driven shaft
rotates faster than the driveshaft
o In the oscillation of the buoy, the alternator
will only be engaged in the downward motion
of the lever, therefor producing a constant
direction in rational motion
Counter Clockwise Locked Rotation
http://en.wikipedia.org/wiki/Freewheel#/media/File:Freewheel_en.svg
o In a permanent magnet generator, the
magnetic field of the rotor is produced
by permanent magnets. Other types
of generator use electromagnets to produce
a magnetic field in a rotor winding
o Can also produce energy in both rotations
http://i.ebayimg.com/01/!Btf)CwgBWk~$(KGrHqYOKkYEvPP1BkV1BL8NFZF(h!~~_35.JPG
o Spur and helical gear reducers are the
best candidates for use as a speed
increase
o Spur gear speed reducer may be used as
a speed increaser within the same speed
and power range for which it is rated as a
speed reducer
http://www.davidbrown.cn/products/centre%20drives%20large.jpg
o Similar technology to the Beta Stirling Engine
o A piston attached to a buoy will move up and
down by the oscillating motion of the waves
housed in a thin, light cylindrical structure
o The piston will be pinned to a large gear,
housed in a larger cylindrical structure, causing
the gear to rotate
o The larger gear will be connected to a smaller
one which will then be connected to an
alternator
http://www.cnccookbook.com/img/StirlingEngines/BetaStirlingTG4web.jpg