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March 30, 2012
A Buoyant Future for Floating Wind Turbines?
OFF SHORE WIND FARMS _ Cont'd
V. Deep Sea Cold Water for use as Air Conditioning medium (SWAC). Injecting compressed air into the top section of a deep water pipe develops a positive head at the cold water intake at 800m below MSL and forces the cold water up the pipe where it is de-aerated and pumped as cold water to Air Handling Units.
VI. A "Construction Unit" fixed and anchored to the sea bed provides a dry deck and enclosed space for all above equipment.
These systems were developed as a Coordinated Offshore Energy Extraction system (COEE), and are detailed at www.renewableenrgypumps.com
NOVELTIES
There are a number of novelties provided by the COEE system. To name a few:
1. The direct drive method of wave energy extraction using infinite line without limitation on the wave heights. The only restriction is the height of the CU dry deck above MSL.
2. The arrangement of the "Construction Units" in a V configuration to achieve wave power output leveling and to reduce the power ripple over the whole wave cycle to a to minimum.
3. Providing medium size 1.5 MW wind turbines with its generator installed at the base of the WT support at the dry deck of the offshore Construction Unit.
4. Using the CU to support tidal turbines with direct drive to operate respective water pumps and/or electric generators located at the dry deck, thus reducing support costs. Also removing the electric generator from underwater installation which is the present way of installation. .
5. Providing an offshore Construction Unit to allow all equipment to be installed at a dry deck in an enclosed space.
6. Installation of a water turbine to extract energy from the Lee side of the wave, thus enhancing wave energy extraction and improving power leveling over the whole wave cycle.
7. Deep Sea Cold Water extraction.
8. The roof area of the CU is used to install PV cells to extract Solar Energy.
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March 30, 2012
A Buoyant Future for Floating Wind Turbines?
BRIEF SUMMARY
In the spirit of collective knowledge, and the quest to find a way to extract renewable energy from the sea, the following information are provided, hoping it helps others to come up with a viable and economical wave energy extraction system.
Once it is planned to extract offshore energy, then it is wise to explore all available offshore renewable energies and devise a system for maximum utilization of the respective sea surface area.
This leads to installing a Coordinated Offshore Energy Extraction system as shown in Figure-8 to extract the following offshore renewable energy sources:
I. Wave Energy Extraction where Potential and Kinetic energies are extracted.
a. Potential Energy is extracted using Buoyant Floats to directly drive water pumps or electric generators.
b. Kinetic Energy is extracted using water turbines installed below lowest instantaneous sea level at the wave Lee Side to directly drive water pumps or electric generators to extract energy from the Lee side of the wave.
c. The small quantity of water at high head is collected and fed into a Hydro Turbo Generator.
d. The electric power generated by the generators is 3-phase AC using variable speed Isosync. Generators connected in parallel and fed to a step up transformer.
II. Tidal Energy is extracted by means of water turbines driving a water pump or electric generator.
III. Wind Energy using medium size wind turbines (1.5MW), and transferring the torque from the Nacelle at the top of the WT support to the electric generator installed at a dry deck.
IV. Solar Energy using the roof of the offshore "Construction Unit" to install PV cells where DC current is generated and fed to a common bus and inverted to AC voltage and fed to a step up transformer.
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February 29, 2012
Big Prospects for Small Wind Turbines
VI. PHYSICAL DISADVANTAGES of WT PRESENT DESIGN
1. Taking a modest 100 meter deep sea bed, then the WT Nacelle is at a minimum of 191 meters above the sea bed (100+9m clearance +164/2 Blade length) which is equivalent to a 64 floors high building. Just imagine that a weight of 350 tons is installed at the roof of a 64 floors high building.
2. Adding 550 tons steel foundation gives a total of 900 ton structure acting at the sea bed.
3. Add the horizontal forces of approximately 4 tons at a wind speed of 50 Km/hour and 86 tons at 240 Km/hour wind speeds in addition to wind and cross currents forces acting at the WT support. Add the vibrations acting on the WT support you end up with an engineering structural feat.
4. Stay wires with respective anchors at the seabed are needed to counteract horizontal wind forces and cross currents. These may become useless in the long term due to settling of the anchor of the WT support.
5. Stay wires are installed under water making the offshore sea area of around 10 square kilometers required for 24x6-megawatt wind turbines out of bound for navigation.
6. A team of research engineers from the Technical University of Denmark report that stone armor around the 4.2 m diameter mono-pile foundations of the vast Horns Rev offshore wind farm in the North Sea was found to have unexpectedly sunk by up to 1.5 m.
7. Imagine the service and lifting equipment required for servicing and maintenance.
8. Some firms are proposing helipads at each WT supporting structure.
VII. ELECTRICAL DISADVANTAGES of WT PRESENT DESIGN
1. The conversion of WT AC outputs to DC and back to AC reduces the overall efficiency of the system, imposes additional costs for expensive conversion/inversion equipment and control gear, and additional operation and maintenance costs..
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February 29, 2012
Big Prospects for Small Wind Turbines
For detailed discussion of WT visit www.renewableenergypumps.com
Follows a sample:
IV. WIND TURBINE WEGHTS
1. The heavy weight of wind turbines matters financially because it not only makes it difficult to install them but also to transport them. The combined weight of the SWT-6.0-120?s nacelle and blades is 350 tons (no small matter).Source: Clean Technica (http://s.tt/12Ftj
2. The first foundation of the offshore wind farm Thornton Bank 2 has been successfully installed off the coast of Belgium. The around 50 meter high and 550 ton steel foundation (a so-called jacket foundation) was manufactured in Hoboken near Antwerp, and in the past few days it was transported via pontoons through the Scheldt estuary to its final destination around 30 kilometers off the Belgian coast.
3. Thornton Bank“s second construction phase will have 24x6-megawatt wind turbines on around 10 square kilometers area. The total weight that the individual foundations will carry is around 700 tons.
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October 6, 2011
Strength in Numbers: 5 Partnerships That Could Expand Renewable Energy
To Anonymous-Comment 16: Thanks for your support and insterest. The Coordinated Offshore Energy Extraction system, Wave, Wind and Ebb/Tide is already Patented. We need to cooperate with European firms for marketing, coordination and execution of projects in Europe. We had requested CRE to modify their speccification (for 17 Billion US$ 10-year projet)to allow selected contractors) to bid the COEE as an alternate.
To Mr. Harold=Philbin: Again thanks. All we are sysing, ONCE an Offshore energy extraction system is contemplated, it is worth investigating other systems like the COEE. It is beyond my imagination to see a 20 or 30 megawatt generator installed on top of a wind turbine mast. We have proposed a smalller size wind turbine and removed the generator from top of the mast to a dry deck 6-meters above Mean Sea Leve.I agree with your comment 'it is not investors throwing millions of pounds at anything that is the danger, because they only do it once, if at all'.
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October 5, 2011
Strength in Numbers: 5 Partnerships That Could Expand Renewable Energy
Good combinations and ideas. However; what about combining Offshore Energy extraction into one Coordinated System: Wave, Wind, Ebb/Tide and cold water from the deep. The wave energy extraction system gives leveled power through the whole 360 degree wave cycle.
Apart from generating scalable energy to be fed into the network, the system is ideal for water desalination Sea Water Air Conditioning and to supply power and SWAC to Offshore oil rigs.
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September 15, 2011
Geothermal, Offshore Wind Get Boost in U.S.
To Mr. James CTD Mohan.
Kindly go to website www.renewableenergypumps.com
Coordinated Offshore Energy Extraction System
Wind, Wave and Ebb/Tide
www.renwableenergypumps.com
Once an offshore wind farm is planned, then it is worth to investigate utilization of the offshore area to extract maximum energy.
There is no comparable system on the market as to: Direct Drive energy extraction from Wave, Wind and Ebb/Tide, including Pitch and rotation directional control, all leading to direct energy conversion to electric power.
The use of "Isosync" VSG generator by VSG-USA that runs at a wide range of speed, will not discard its load, will still continue to generate power of the same frequency and voltage as the utility line it is in parallel with. The "Isosync" VSG generator does this WITHOUT the use of complicated speed controls, power electronics or inverters. The "Isosync" VSG will harness power sources more efficiently or that otherwise could not be utilized with standard AC generators.
The system provides modular construction, minimum moving parts, and highest efficiency, all leading to minimal construction, operation and maintenance costs.
Our proposal consists of the following:
COEE System Description
I. WGD Offshore "Construction Unit"
II. Wave Gear Drive-Pump or Generator
III. Wave Gear Drive-Air Pump
IV. Wind Turbines
V. Ebb/Tide Turbines
Wave Gear Drive System-WGD
1. Wave Gear Drive System-Description
2. Wave Air Pump-WAP
3. Wave Gear Drive Pump-WGDP
4. Wave Gear Drive Generator-WGDG
5. WGD System Construction
6. WGD System Output
7. Estimated Output
Offshore Structure Types
1. Offshore Floating Structure
2. Offshore Fixed Structure
3. Site Selection
4. Estimated Output
Useful Links:
a. http://peswiki.com/energy/Directory:Ocean_Wave_Energy
b. www.doe.gov
c. www.epri.com
d. www.emec.org.uk/wave_energy_developers.asp
e. 1erik.koldby@dk.abb.com
f. "Offshore but Online."
g. "Challenges on the Road to an Off
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September 15, 2011
Geothermal, Offshore Wind Get Boost in U.S.
"41 Offshore Wind Power R&D Projects Receive Energy Department Funding" from ENERGY.GOV and published in RenewableEnergyWorld.com
Have a look at the scope of work under this funding. IT DOES NOT ADD TO PROJECT DEVELOPMENT, ETC........
What a waste. Greetings to Mr. HU
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September 15, 2011
Geothermal, Offshore Wind Get Boost in U.S.
Greetings and full respect to HU and CHU.
One company filed for chapter 11 on a 293 million US$ bank guarantees.
Company started business two years ago and ba PV business of 1,100 employes.
They surely had done market reasearch to explore market size.
Also surely the had done competitors operations.
Failure in their operations as they claim: Chinese make cheaper PV cells.
Their failure had nothing to do with business acum, managemement and controls.
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September 14, 2011
Geothermal, Offshore Wind Get Boost in U.S.
Coordinated Offshore Energy Extraction System
Wind, Wave and Ebb/Tide
www.renwableenergypumps.com
Filename: COEE Det. Descrip.
Once an offshore wind farm is planned, then it is worth to investigate utilization of the offshore area to extract maximum energy.
There is no comparable system on the market as to: Direct Drive energy extraction from Wave, Wind and Ebb/Tide, including Pitch and rotation directional control, all leading to direct energy conversion to electric power.
The use of "Isosync" VSG generator by VSG-USA that runs at a wide range of speed, will not discard its load, will still continue to generate power of the same frequency and voltage as the utility line it is in parallel with. The "Isosync" VSG generator does this WITHOUT the use of complicated speed controls, power electronics or inverters. The "Isosync" VSG will harness power sources more efficiently or that otherwise could not be utilized with standard AC generators.
The system provides modular construction, minimum moving parts, and highest efficiency, all leading to minimal construction, operation and maintenance costs.
Our proposal consists of the following:
COEE System Description
I. WGD Offshore "Construction Unit"
II. Wave Gear Drive-Pump or Generator
III. Wave Gear Drive-Air Pump
IV. Wind Turbines
V. Ebb/Tide Turbines
Wave Gear Drive System-WGD
1. Wave Gear Drive System-Description
2. Wave Air Pump-WAP
3. Wave Gear Drive Pump-WGDP
4. Wave Gear Drive Generator-WGDG
5. WGD System Construction
6. WGD System Output
7. Estimated Output
Offshore Structure Types
1. Offshore Floating Structure
2. Offshore Fixed Structure
3. Site Selection
4. Estimated Output
Useful Links:
a. http://peswiki.com/energy/Directory:Ocean_Wave_Energy
b. www.doe.gov
c. www.epri.com
d. www.emec.org.uk/wave_energy_developers.asp
e. 1erik.koldby@dk.abb.com
f. "Offshore but Online."
g. "Challenges on the Road to an Offshore HVDC Grid."
h. http://www.vsg-usa.com "Iso
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August 4, 2011
BPA Decision To Curtail Wind Power Sends 'Chilling Signal' To Industry
To Dr. AlexC
ONCE an offshore wind farm is planned, then it is worth to investigate the Coordinated Offshore Energy Extraction System, Wind, Wave and Ebb/Tide. There is no comparable system on the market as to maximum space utilization, energy extraction and minimum costs. Also modular factory fabricated construction units, offshore dry deck and enclosed housing for equipment and direct drive Wind, Wave and Ebb-Tide/Generators (VSG-USA "Isosync.", leading to high efficiency, low construction, operation, and maintenance costs.
Calculations are basic and simple engineering principles; can be easily checked and are provided at the website for review.
Lot of funds and time are wasted on non-practical systems, reports and feasibility studies. One corporation scrapped a project after 5 million US$, 3-years studies and discovered it costs 60 MUS$ to get power from 5-miles offshore. Another is researching hydrogen production by electrolysis, other big corporations are designing 20 MW wind turbine with no clue as to real estate, access roads, heavy lift, vibration and so on. My views are documented. Just search for Shamil Ayntrazi.
The only reasonable and proven renewable energy system is PV for electric power and hot water for single family houses and medium size apartment buildings, with a breakeven point of 5 plus years.
Collective knowledge dictates detailed review of every system as it may help a remote island to get electric power and desalinated water.
Billions are planned for Offshore Wind farms each year for the coming 20-years. All we ask is to submit the COEE System as an alternate bid.
Let us not act as the blind men and the elephants in a dark room.
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