Floating WIND TURBINE FOUNDATIONS AND FLOATING Bridges
The coee and fb system uses engineering principles, namely; hydraulics, civil, mechanical and electrical to provide a layout, a choice of materials and equipment and to ensure proper construction, operation and maintenance.
The inventors have the following contributions to the offshore renewable energy extraction systems. Each succeeding system as a natural extension of the previous system and compliments it. A total of eight (8) patents had been granted or applied for as follows:
Renewable energy wave pumps, Patented under patent number US 7,391,127 B2 (1-patent),
The coordinated offshore energy extraction system; wave, tidal, wind and solar (coee) is pending under patent application No. 12,798,902, 4-patents,
The coordinated offshore energy extraction and floating wind turbine foundations and floating bridges under application No. 29/463,002, 3-patents.
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 a coordinated offshore energy extraction system to extract renewable offshore energy, namely; wave, tidal, solar and wind.
Offshore wind farms with fixed pylon supports anchored to the sea bed are presently used. The problem with these systems is the large weight of the wind turbine and the large bending moments developed at the base of the wind turbine support due to large horizontal forces acting at the top of the support
Fixed offshore pylon supports, high material and construction costs, large vessels and cranes for installation, sinking foundations due to vibration, foundation jacketing and difficulty and high costs to remove the sea bed anchors at the end of the project life as requested by some clients; for example French Public Utilities. All of these lead to high costs of materials, of construction and maintenance.
Floating supports are being investigated with no viable system being available yet. The following proposal would solve many of the above difficulties, improve offshore energy extraction and would provide other services as detailed below.
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.
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 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.
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 combination of eight (8) COEE & FB Construction Units can be modified to act as a vessel for measuring all the requirements of this proposal. All it needs is the data acquisition and the drive turbines for stabilization and sail to required location.
A COEE Construction Unit measuring 19x14 meters can provide power output in KW/m for 0 to 8m high waves, and energy output per year per 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.
Provides a coordinated offshore energy extraction system namely: wave, tidal, solar and wind and an offshore floating bridge and floating wind turbine foundations.
Assembly of all elements performed at the shoreline, are floated and towed to location ready for installation and operation.
No need for large vessels and cranes for installation, operation and maintenance.
Easy vehicular access to offshore wind turbines farms
New method for floating wind turbine support.
Electric power transmission lines and control cables are installed at the bridge instead of the sea bed.
The COEE & FB system is suitable for installation: offshore, on lakes, on water reservoirs behind dams, across rivers, to and between islands. Wave energy extraction applies only to offshore installation.
Provides variable speed generators (VSG-USA) waiving the need for DC/AC electric current inversion for wind turbines and for hydro turbo generators to improve and regulate electric power output for reliable connection to public electric networks.
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 COEE & FB system is marketed worldwide to provide:
A coordinated offshore energy extraction system; wave, tidal, wind and solar energy.
Access to offshore COEE & FB for ease of transport, installation, operation and maintenance.
Provides floating foundations for offshore wind turbines and floating bridges.
Provides support for electric power and control cables from the COEE & FB system to the shore line.
Access to oil and gas rigs and platforms, and support for gas and oil pipe lines and for electric power and control cables to the shore line.
Access to and between islands suitable for heavy two-way traffic.
Can be used as an alternate offshore two-way highway where the shoreline is highly developed resulting in congested traffic.
Access to a floating island with public facilities such as parking area, restaurant, buildings and other facilities.
Suitable for providing offshore artificial floating islands.