Floating Wind Turbines and Floating Bridges (COEE&FB)
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The inventors have the following contributions to the offshore renewable energy extraction systems. A total of eight (8) patents had been granted or pending as follows:
Renewable energy wave pumps, 1-patent granted.
Coordinated Offshore Energy Extraction (COEE) system; wave, tidal, wind, solar and deep sea cold water (SWAC) as a medium for air conditioning, 4-patents pending.
Floating wind turbine foundations and floating bridges, 3-patents pending.
During the next 20 years, there is a need for 1,500,000 MW of new power plants. The fuel consumption for these power plants is estimated at 59 million barrels of oil per day. CO2 release to the atmosphere is estimated at 2.2 billion tons per year. Hence the need for renewable energy extraction systems.
Real estate high costs, availability, need for access roads for heavy material transport and construction equipment, noise pollution of wind turbines and not in my backyard (NIMBY) attitude, all lead to investigating use of offshore wind turbine farms.
Installing the wind turbine farms far away from the shoreline where the sea bed is more than 30-meters deep requires driving the fixed supports deep into the sea bed where jacketing, and protection against scavenging and settlement all lead to expensive structure.
Heavy wind turbine equipment need special transport vessels, heavy lifting marine equipment and vessels for transport of maintenance and operation personnel.
All the above favor the need for providing floating wind turbine foundations.
Recreation areas and scenic views requirements at the shore line together with high wind availability entail installing wind turbine farms far away from the shoreline.
The COEE uses a modular floating “Construction Unit” completely assembled at the shoreline and floated to location complete with all equipment ready for installation and operation.
Additional floats are provided to the “CU” and coupling more than one “CU” as shown on the drawings, would make the resulting structure an efficient floating wind turbine foundation.
Additional floats are provided to the “CU” assembly as shown on the drawings would make the resulting structure an efficient floating bridge enhancing the stability of the wind turbine floating foundation and would provide an area and support for installing the solar system at the roof of the floating bridge.
All the above are of modular construction, completely assembled on the shoreline complete with all equipment, floated and towed to location ready for installation and operation.
A witness for the viability of floating bridges is the SR 520 floating bridge built across lake Washington in 1962 and is still operating is still the world’s longest floating bridge, opened on Aug. 28, 1963
SUMMARY COEE and FB
The COEE extracts offshore renewable energy; Wave, Tidal, Wind and Solar as a coordinated system.
All systems are assembled on a floating Construction Unit that is used as a building block for offshore wind turbine Floating Foundations and for Floating Bridges.
The Wind Turbines are of the HAWT or VAWT type. The VAWT type can be folded to endure a severe sea storm.
The up and down movement of a sea wave acts directly on a Float to convert wave undulations to a rotary motion to operate:The Floating Bridge provides support for electric power and control cables laid to the shoreline and provides access to the wind farm for ease of maintenance.The Floating Bridge is used for access to oil, gas rigs and for support of oil, gas pipelines, electric power and control cables to the shoreline.
A water pump installed at a dry deck, and pump a small quantity of water to a high head, feed it through a closed circuit piping system to a hydro turbine using a Variable Speed Generator to produce electric energy suitable for connection to a Public Utility.
A VSG generator to generate electric power at D.C., parallel it, invert to A.C., step it up and transmit to the shore line for connection to public utility.
The COEE and FB system may be used to construct Floating Islands. In addition, it provides access to and between islands, across rivers, at reservoirs behind dams, for offshore wind turbine farms; for transport, installation and maintenance.
The COEE and FB system accepts Wind Turbines, Hydro Turbines and Solar System as provided by others.
A typical “Construction Unit” measuring approximately 19x14 meters may be provided to act as a prototype to install and test all the energy extraction systems together with a unified control system for connection to the public utility.
A COEE Construction Unit measuring 19x14 meters can provide power and energy output per year per one meter of sea front in excess of the following depending on sea and wind states:
KWH Per lm/Year
CU 19x14 m
From the above, it is easy to calculate the Return on Investment (ROI), by estimating the capital cost per KW for each system, and the sale price per KW-Hour of energy provided per year.
It is worth for Clients and Consultants to request an Alternate Bid based on the Coordinated Offshore Energy Extraction and Floating Wind Turbine Foundations and Bridges. This way they will have a real estimate and an estimate of KW-Hours produced per year.
The COEE and FB system does not require R&D neither Prototype testing. The engineering calculations can be easily developed and verified, and all equipment are available on the market with proven performance records.
Direct Drive Wave Energy Extraction system
Direct Drive Tidal and Wave Lee Side Energy Extraction system.
Provides Constant Voltage and Frequency energy output from a pulsating wave energy.
Coordinated offshore energy extraction system: wave, tidal, solar, wind turbines and SWAC.
Assembly of all elements is performed at the shoreline, floated and towed to location ready for installation and operation.
No need for large vessels and cranes for offshore installation, operation and maintenance.
Easy vehicular access to offshore COEE and wind turbines farms
New method for Floating Wind Turbine Foundations.
Electric power transmission lines and control cables are installed at the floating bridge instead of the sea bed.
The solar energy output through the inverter sets the output frequency of the system as required, 50 or 60 HZ.
Provides variable speed generators (VSG-USA) waiving the need for AC/DC/AC electric current conversion for wind turbines and for hydro- turbo generators to improve and regulate electric power output for direct reliable connection to public electric networks.
Unlike the conventional AC generators on the market today, the “VSG” will operate at a wide range of speed, will not discard its load, and will continue to generate clean AC power incrementally, of the same frequency and voltage as the utility line or source that it is connected in parallel with.
Sea bed anchors are assembled onshore, floated and towed to location ready for installation. They are easily floated and towed to shore for disposal at the end of the project life for disposal.
The planned renewable energy market in MENA area exceeds 250,000 GW that is approximately equivalent to a market of 500 Billion US$ in the coming 15-years with associated provision of technical labor. This alone dictates a local manufacturing facility.
Similar areas have the same geographic characteristics as MENA, such as the Gulf States, Malaysia and surroundings.
The COEE & FB system is marketed worldwide to provide the services as listed below:
A coordinated offshore energy extraction system; wave, tidal, wind, solar and SWAC energy.
Access as a floating bridge to offshore Wind Turbine Farms for ease of transport, installation, operation and maintenance.
Floating Foundations for offshore Wind Turbine Farms.
Artificial floating islands with public facilities such as parking areas, restaurants, buildings and other facilities together with required floating access bridges.
Access to and between islands suitable for heavy two-way traffic.
Floating two-way highway where the shoreline is highly developed resulting in congested traffic.
Access to oil and gas rigs and platforms, and support for gas, oil pipe lines and for electric power and control cables to the shore line.
Support for electric power and control cables from the COEE & FB system to the shore line.
Provides deep sea cold water to operate marine life farms at 13 degrees Centigrade or less, making it suitable for Salmon and other fisheries.
In addition, the COEE&FB system can be developed for 400 or 800 KV D.C electric backbone network tying all MENA countries together into a common electrical network.
It is worth requesting oil companies to provide at their expense an access causeway to their oil/gas rigs for transport of oil and gas to the shoreline and to provide easy access for maintenance crews. This would also act as floating foundations for wind turbines.