1. Ocean Hydropower Harvest Station
Team 5
Carlos Sosa
Michael Horta
Maria Medina

2. Total World Energy Consumption
According to U.S. Energy Information Administration
Units are in Quadrillion Btu
British thermal unit (Btu)
Quadrillion = 1,000,000,000,000,000
1 Btu = W
154,975,103 GW were consumed in 2012

3. Estimated Increase in Population
In the next 50 years the world population is expected to increase by 2 billion
If each of those new 2 billion individuals uses one 50W light bulb
50x = 100,000,000,000W = 100GW of more energy consumption to account for

4. Cost Analysis
This table compares the US average levelized electricity cost (LEC) in dollars per kilowatt-hour for both non-renewable and alternative fuels
LEC is the total cost of build and operate a power plant over its life divided by the total power output over its lifetime
Hydro energy is not the cheapest initially, however it does show better results then other forms of power
With the right investment and technology it can have promising results
Power Plant Type
Cost ($/KW-hr)
Coal $
Natural Gas $
Nuclear
$0.10
Wind $
Solar PV
$0.13
Solar Thermal
$0.24
Geothermal
$0.05
Biomass
Hydro
$0.08
These results are based on US EIA statistics and analysis from Annual Energy Outlook 2014

5. Wave Energy
EPRI estimates the total wave energy resource along the outer continental is at 2,640 TWh/yr
1 TWh/yr of energy will supply around 93,850 average U.S. homes with power annually

6. Diverse Regions
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
Wave technologies have been designed to be installed in the nearshore, offshore, remote, and far offshore locations

7. Cost Incentives
For 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
Electricity generated by large scale coal burning power plants costs about 2.6 cents per kWh
2 cent per kWh is the projected goal to set for renewable wave energy

8. Wave Power Through Time
First known patent for ocean wave energy by Girard and his son in Paris, France
Yoshio Masuda’s experiments took over the modern search for harvesting wave energy
The Clean Energy Tax Stimulus Act
Ocean Power Technologies founded
1799
1903
1940’s
1973
1997
1998
2008
The oil crisis gave renewable energies new momentum to be further researched by many universities worldwide
Pelamis Wave Power founded
The first oscillating water-column type of wave-energy device made by Bochaux-Praceique near Bordeaux, France

9. Alternative Design #1 Methods of Generating Power Structure
Waves compress air in chamber causing the air to be forced upward and spin the propeller
Wave movement forces the magnet to move up and down inside the coil and generate a current
Structure
Hexagonal shaped design
Made of pvc pipes filled with polyurethane foam
Structure will enclose a power generator

10. Aesthetics Incorporate a jellyfish-like appearance
Enclose is a bubble-like material
Protect marine life
Add florescent colors
Led or glow in the dark paint
Improve visibility in the dark and under harsh weather

11. Alternative Design #2
Clockwise Free Rotation
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
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

12. PMA Alternator
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
Can also produce energy in both rotations

13. Spur Gear Speed Increaser
Spur and helical gear reducers are the best candidates for use as a speed increase
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

14. Alternative Design #3 Similar technology to the Beta Stirling Engine
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
The piston will be pinned to a large gear, housed in a larger cylindrical structure, causing the gear to rotate
The larger gear will be connected to a smaller one which will then be connected to an alternator