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By: Whistlez2000 (39 month(s) ago)

Greetings. I teach International Baccalaureate in Brampton to Grade 12 Physics students. Energy degradation and Power Generation has been added to our syllabus. May I please use this presentation (pieces actually) for my students? Thank You. dennismercier@gmail.com

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Slide1: 

Australian Institute of Energy Sydney 1st May 2006 Tom Engelsman Raymond Alcorn Wave Energy – Blue Gold?

Introduction: 

Introduction What is wave energy How much is there How do Energetech convert it Power Water Summation

What is Wave power?: 

What is Wave power? Simply - Conversion of ocean wave energy to electrical energy or fresh potable water Reality – Generating acceptable power consistently, efficiently with little environmental impact, competitively.

The “Holy Grail” of wind/wave/tidal…..: 

The “Holy Grail” of wind/wave/tidal….. Be able to produce renewable power, irrespective of the local wind/water conditions Be able to produce renewable power at rates equal to the gas/coal fired main land installations, based on initial investment costs and/or lease, without major subsidy. Energetech may be the first company in the world able to reach both of these goals within a 5 year time frame

The Resource – kW/m: 

The Resource – kW/m

Slide6: 

PERIODS 0.033333 TO 0.2 SPECTRAL ANALYSIS OUTPUT Hs(w) Te Pi 2.16 13.80 35.08 ZERO CROSSING ANALYSIS OUTPUT Hrms Hs H10 Hmax Tz Pe 1.58 2.32 3.20 6.15 13.01 35.60 Wave Analysis South of Melbourne - 15m How is it measured?

Principle of Conversion: 

Principle of Conversion THE PARABOLA THE OWC THE TURBINE focuses & amplifies Incoming waves converts wave motion To air flow Converts oscillating flow to unidirectional torque

Energetech Turbine: 

Energetech Turbine Developed by Energetech and University of Sydney Same direction of rotation irrespective of air-flow Variable pitch High Torque, Low RPM Low drag loss Novel blade design Active control and Self Start

Port Kembla Prototype Device: 

Port Kembla Prototype Device 35m Parabola & OWC 1.6m diameter, 21-blade, 500RPM, servo controlled Energetech turbine Highly instrumented 0.5MW capacity 11kV onboard transformer Successfully tested during 2005 In dock for reconfiguration

PK Power Module: 

PK Power Module to grid Induction Generator Turbine Brake Coupling Bearing housing Servo Actuator Isolation Door Support base

Why this system?: 

Why this system? Flexibility Ability to dynamically change station set-up under range of conditions Controlled variable speed Software Configurable Remotely monitor, operate, alarm, trending and predict

And the cost per Kw-Hr …..: 

And the cost per Kw-Hr ….. PK “as is” “Just PK” or Rhode Island Portland/Water 2006 “Order”

Water - The golden commodity: 

Water - The golden commodity Price for Sydney Home water A$ 1.1 per 1000 liters Price for Sydney bottled water A$ 2.75 per liter A barrel of Oil today Aus $ 87 (at the well) A barrel of water Aus $ 0.20 (at the tap)

“And then there is storage”: 

“And then there is storage” Water can be a “lake” Electricity is an “Autobahn” Free flowing entry Storage The higher the “density” The greater the risk Either “Go” or “Stop” No storage

SWRO Cost/Unit Water History: 

SWRO Cost/Unit Water History $US/M3 2.50 2.00 1.50 1.00 0.50 1980 1990 2000 2001 2002 Israel Singapore And this is on the basis of the full capital costs plus electric power at a cost of 8 US cents/kw-hr !!

Slide17: 

Desalination currently being built or planned

The major issues with large desalination plants: 

The major issues with large desalination plants Capital cost since scale is an essential element of cost reduction Massive need for energy, and hence greenhouse impact becomes “Catch-22” Major coastal “footprint” Return loop for the residual brine Major central location with pipelines to users Very expensive “standby” during rain period Water “pricing” problems due to high marginal cost

But with a “wave unit”…: 

But with a “wave unit”… “Free” renewable energy Zero greenhouse emission Offshore up to 5 Km Locate off the coast from markets – small “water farms” Disperse brine in the location Small footprint due to density of medium (ocean) Scale to suit local demand Minimal pipelines – ideal for remote locations

The Energetech concept: 

The Energetech concept Replace the electrical generator with a conventional high pressure centrifugal pump Lift sea water using this pump from the “in situ” location Pressurize a conventional Reverse Osmosis with this pumping system. Use brine power recovery to pump fresh water to shore Generate small amounts of power for other pumping and/or control needs Run as an un-manned remote control “water farm”

Water Module: 

Water Module The ability to make fresh drinking water without first having to make electric power

Slide22: 

PX Booster Pump Seal Zone PX High Pressure Outlet PX Low Pressure inlet PX Rotor Rotation Seal Zone 100 flow 69 bar 60 flow 67 bar 41.2 flow 2 bar 58.8 flow 2 bar Permeate 40% flow PX High Pressure Inlet PX Low pressure Outlet FM 58.8 flow 66 bar FM 60% flow 1 bar Low Pressure Brine Seawater Pump 100% flow Water Module- Energy Recovery RO Membranes Energy Recovery Pressure Exchanger

Does it really work?: 

Does it really work?

An Ocean Farm: 

An Ocean Farm 1.5MW Water Unit 1.5MW Water Unit 1.5MW Power Unit 1.5MW Water Unit 1.5MW Water Unit 1.5MW Water Unit Fresh Water Storage Facility Pump Unit Fresh Desalinated water This system would deliver approximately 10 Billion liters of fresh water each year

The operating cost structure: 

The operating cost structure ~ 30 Cents

So what are the “numbers”?: 

So what are the “numbers”? Power consumption of 3.75 Kw/Cubic Meter for water pumped to the shoreline Production costs of around 45 to 65 cents per cubic meter (potable standard) All of the above are on a single unit basis Above includes zero allowance for any grants or credits for emission Above costs have future reduction potential with either number of units or size of installation

Cost of water produced (2 Giga-Liter unit) (cents per cubic meter): 

Cost of water produced (2 Giga-Liter unit) (cents per cubic meter) The “sweet” Spot Future?

Summation A “Wave Energy Barge” makes…: 

Summation A “Wave Energy Barge” makes… Low Cost Emission free Desalinated drinking water Emission free electrical power At costs comparable to current Fossil based supply systems Waves 2 meters high and with 50 meters breadth equals a free barrel of Oil every 10 minutes A major city could be supplied with 10 Giga- Liters of fresh water for a capital cost of roughly $65 Million The “Wave Energy Barge”

The benefits: 

The benefits Low profile, small foot print Up to 5 Km offshore Minimal Brine handling problems Locate near Market need Competitive cost base Absolutely no Greenhouse Gas

Slide30: 

“If we could ever competitively, at a cheap rate, get freshwater from saltwater, that would be in the long-range interest of humanity (and) would dwarf any other scientific accomplishment” President John F. Kennedy, April 12, 1961

Slide31: 

wave energy – blue gold? www.energetech.com.au