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FloatNRG
   A coordinated energy   extraction system,
From sea waves, tidal, solar and wind all floating

 

 

FloatNRG,

Coordinated Floating Energy Extraction System

Floating Wind Turbines and Islands

 

EXECUTIVE SUMMARY

CONTENTS:

ABSTRACT
BACKGROUND
NEED for Floating Marine Energy Extraction
PRESENTLY USED INSTALLATIONS
PROPOSED SYSTEM and NOVELTIES
UTILIZATION
PYISICAL CHARACTERISTICS OUTPUT POWER and ENERGY
COST per KW Hour
Alternate Bids
PROPOSALS
FINANCING
PATENTS

DESCRIPTION

BACKGROUND
DESCRIPTION
FLOATING WIND TURBINE SUPPORTS
REQUIREMENTS
CONSTRUCTION and NOVELTIES
FAR-FETCHED PROPOSAL
ELEMENTS OF CONSTRUCTION
CHARACTERISTICS OF THE (TLP)
Output 1, 5x6 and 50x6 MW Wind Turbine Farms
CONSTRUCTION
DRAWINGS 

New Trends in (Renewable) Power Generation

 ABSTRACT

The “floating Energy System” (FloatNRG) extracts offshore energies from; sea waves, ebb/tidal currents, solar, thermal and wind as one coordinated system. Wave potential, kinetic and horizontal energies are extracted from wave front and lee sides The FloatNRG system is of modular construction, completely assembled at the shore line on a floating “Tension Leg Platform” (TLP), floated and towed to location ready for anchoring to the sea bed beyond 30m depths ready for operation.  For each 6MW wind turbine the (TLP) consists of submerged fixed floats with a foot print of 1,600 square meters, handles waves up to 8m high and storms with wind speeds up to 240 Km per hour and develops resisting moments up to 56,525 ton-meters and an output of 1,779,393 Kwh/year and volume of 2,217 cubic meters for energy storage as compressed air.

 SUMMARY

The FloatNRG is a coordinated system for extracting renewable energies from; sea waves, ebb/tidal currents, solar, deep sea cold water, OETC and wind turbines.  The system consists of an immersed (TLP) platform developed by submerged fixed floats whose top is below the trough line of sea waves, to support all energy extraction equipment, electric conversion and related switch and control equipment.  The floating (TLP) develops a net uplift of 3-tons per square meter and a resisting moment of 80.599 ton-meters to resists storms with wind speeds up to 240Km per hour and is not affected by high waves.  The system consists of modular fixed floats forming a (TLP) to support “floating construction units” (FCU)’s that provide closed space for energy extraction equipment and support for solar system.  The (TLP) and (FCU) units are assembled at the shore line, floated and towed to location ready for operation.

Novelties;

a) Direct drive sea wave energy extraction,

b) Develops additional 0.932 KW or 2,992 KW hours per year, at each floating wind turbine support, and additional 4,462 KW or 14,577 KW hours per year at each 250m space between the wind turbine supports

c) Uses one unidirectional hydro-turbine to extract ebb/tidal and wave kinetic energies,

d) Provides compressed air storage of 3,772 cubic meters and 5,235 Cum. respectively at the Floating WT support and at the space between Floating WT Supports

e) Provides 16% additional power from each wind turbine support and additional 74% from the space between adjacent floating wind turbine supports. 

Utilization;

Floating: wind turbine support, conventional Power Plants and substations, Marine laboratory Bridges and vehicular Causeways, islands, Docks and Wharfs for large tourist ocean liners and Residential Islands.

PROPOSALS

  1. Alternate Bids, owners and consulting engineers when planning an offshore wind farm, to request developers /contractors to provide an Alternate Bid using the FloatNRG system, including :
  2. Costs, maintenance and operation and KWh output with respective sale price.
  3. Floating Marine Laboratory, to measure sea and wind states and a water jet 100m high.  This would be unique in MENA Area.
  4. Providing wave and ebb/tidal energies by supporting the (FCU) to the underside of the oil/gas platform.
  5. Staging Assembly Area at the shoreline for:
  6. Preparing the fixed floats.
  7. Unique in the MENA Area up to Gibraltar.
  8. Concrete fixed floats for the SR250 Floating Bridge at Washington State, was prepared in South Korea, floated and towed to Washington State.

DESCRIPTION – (TLP)

The (TLP) consists of modular rectangular 3-D hollow shaped Fixed Floats (FXFL) whose tops are 50-centi meters below the trough line of the wave, made of high strength marine reinforced steel concrete to provide a net uplift of 6-tons per square meter.

The (FCU)’s “Floating Construction Units” are supported by the (TLP) to provide hermetic space for the equipment and to support the Solar System.

ENERGY EXTRACTION

(FCU)’s “Floating Construction Unit” are provided as two types; Active and Dummy.

(FCU-A) is an active unit providing support for wave, ebb/tidal and solar extraction equipment at a deck 5-meters above mean sea level (MSL) capable of handling waves up to 8-meters high including ebb/tidal level variations.

 (FCU-D) is a dummy unit providing support for the (FCU-A) and for the solar system. 

“Buoyant Floats” (BF) move up and down with wave undulations.  The up and down movement is directly converted through a pulley system and sprag type clutch to rotary motion to drive electric generators at the (FCU-A) deck.  Each (BF) develops a constant vertical uplift force of 2.65 tons.  Three or more (BF)’s are installed in line with the incoming wave. Novelty……Direct Energy Extraction.


Wave Kinetic energy is extracted by the falling wave water directed through a hydro-turbine with vertical shrouds to increase its speed and installed below the trough line of the wave, to directly drive an electric generator at the (FCU-A) deck.                 Novelty       Wave Kinetic Energy Extraction.


Ebb/Tidal Energy “kinetic energy” (KE) is extracted by channeling the water flow through horizontal shrouds to the same hydro-turbine, to develop unidirectional rotation and drive an electric generator at the deck of the (FCU).   Novelty       One Hydro-Turbine for Wave and Ebb/Tidal Kinetic Energy Extraction.


 Solar Energy is extracted by (PV) cells installed at the roof of the (FCU) units.
Wind Energy is extracted using up to 6MW wind turbines installed on the floating (TLP).
Fixed Floats are the main elements of the (TLP) are installed below the wave trough line provide a net up lift of 3-tons per square meter sufficient to support the floating wind turbine, the (FCU)’s and respective equipment and necessary resisting moments to counter bending moments developed by storms.
Fixed Floats, (FCU)’s and equipment are assembled at the shoreline, floated and towed to location for mooring to the sea bed with all equipment ready for operation.
Deep Sea Cold Water available at 800m water depth is extracted for use as Air Conditioning medium (SWAC). 
Floating Wind Turbine Support: Using FloatNRG system extracts 0.932 KW or 2,992 KW hours per year at each wind turbine support.        Novelty…Power and Energy extraction at the floating wind turbine support.


Space between Floating Wind Turbine Support: Using FloatNRG system extracts 4,462 KW or 14,577,500 KW hours per year at each 250m space between the floating wind turbine supports.    
Power and Energy extraction at the floating wind turbine supports.
 FloatNRG system provides causeway for vehicular traffic and space for electric energy conversion equipment. Novelty

DESIGN CRITERIA

  Wave Energy consists of potential, kinetic energies and Horizontal forces that considerable and are all considered in the design of wave energy extraction system.  Kinetic energy from the leeside of the wave is combined with ebb/tide energy extraction hydro-turbine.
 Formulae used are simple.  
Equipment and Materials used are locally available with proven performance. 
Wave heights up to 8m are considered with +/- ebb/tide sea level variations to provide a dry deck floor of 6m above “mean sea level” (MSL) and house the electric generators and associated equipment. 
Wind Forces at structures above “Mean Sea Level” (MSL) and wind turbine height, weight support base diameter and spacing to be modified to suit wind turbine manufacturer recommendations. 
Cd Values used in the formula for wind speeds of 21Km per hour are used, Cd value at 240Km per hour to be checked.  The formula used is   
Uplift and Vibration due to dynamic wind and wave forces are not considered.  They are covered by overdesign of the (TLP).
Nacelle.  The horizontal wind forces are considered for a 20 by 7.5m nacelle at the top of the wind turbine support.  If the Nacelle equipment are relocated to the bottom of the wind turbine support at the (FCU) deck level, then the dimensions and resulting moments at the wind turbine support are reduced.
Relocation of Nacelle is not considered as it is merely a proposal.
12MW Wind Turbines floating support can be accommodated by increasing the dimensions of the (TLP) foot print and (FXFL).

·        Spacing between Wind turbines for wind turbine farms is proposed as 250 meters,.to be checked with the wind turbine      manufacturer. 

c.   MOMENTS, WEIGHTS &UPLIFT

·     Floating wind turbine support.

Weight                           839 tons
Uplift                            2,509 tons.
Foot Print                     1,600 (40x40m) Sqm.
Dynamic moments at      240Km/hour 46,034 ton-meter.
Resisting moment      56,525 ton-meter

250m Spacing
Weight                         2,178 tons
Uplift                            2,500 tons
Foot Print                   10,000 (250x40) Sqm.
Dynamic moments at 240Km/hour 46,034 ton-meter.
Resisting moment      50,000 ton-meter

d.   OUTPUTS

For sets of 4-BF’s with diameter ranging from 1 to 2.00m and waves up to 8m high.

Energy Extraction from wave, tidal and solar, 1,779,393 KW-hour per year at each wind turbine support.  

·    Floating wind turbine support.

579 KW;                          Power from Wave, tidal and solar and,
1,779,393 KWh per year.
6,000 KW                        Power from wind turbine, and
17,280,000 KWh per year.
  2,217 cubic meters,       compressed air volume.

     250m Spacing.

4,027 KW;                        Power from Wave, tidal and solar, and
12,461,506 KWh per year.
1,844 cubic meters,         compressed air volume.

·         (BF) Number per set if increased to more than four (4) would increase the wave energy output.

·         72% of wave energy is extracted for wave heights between 1m and 2m.

·         Attenuation of wave heights due to restricted surface space (presence of (BF)) would increase the wave energy

OUTPUT.

·         Horizontal wave energy extraction is not included.

·         1m Wave Heights, chasing energy extraction there from is not practical.

e.   CONSTRUCTION

·         Dimensions are a function of project size, sea states and location.

·         Modular Units with minimal cutting and/or welding at site.  

·         (TLP) Assembly is completely performed at the shoreline, floated and towed to location ready for anchor to the seabed with all equipment including the wind turbine ready for operation.

·         Water Depth at the shoreline assembly area is less than 4m deep.

·         Tether Lines for anchoring the (TLP) to the seabed are installed at 40m spacing.

·         Anchors at the sea bed can be floated and disposed of at the end of a project.

SEA and WIND STATES

Wind                  4 months        at 24 hours per day      Solar    12 months        at   8 hours per day

Wave                 4 months        at 24 hours per day      Tidal    12 months        at 20 hours per day

Wind turbine spacing   250 meters

COST per KW Hour

   The given physical data, energy outputs, country, project location, project size and special requirements are sufficient for a main contractor/developer to estimate the total cost of the project and the resulting sale price of one (1) KWh.

Alternate Bids

      A good and simple practical way for proving the viability and economy of the system, is for the Client/Consultants to request Bidders to submit in addition to their Bid, an Alternate Bid using the (FloatNRG) system. 

PROPOSALS

  • A scaled model 1:25 may be developed to test the performance of the FloatNRG system in a test tank.
  • The project may be executed as 1-6MW wind turbine, or 5-6MW wind turbines of 50-6MW floating wind turbine farms.

Options

  1. Use (VAWT) instead of the (HAWT) to achieve the following:
  • Reduce the weight and size of the Nacelle with resulting reduction in the size of the floating wind turbine support.
     
  • Eliminate the limitation on the blade tip speed of the conventional (HAWT).

PATENTS

  • A patent was granted by the USPTO under number US 7,391,127 B2 dated Jun 24. 2008 under; RenewableEnergyWavePumps.
     
  • “Coordinated Offshore Energy Extraction” (COEE) system, for extracting energy from; waves, ebb/tides, solar and wind is are four (4) pending patents. 
     
  • “Coordinated Floating Energy Extraction Equipment” (COFEQ), including floating wind turbine supports, floating bridges and floating islands are three (3) pending patents.   
     
  • A total of eight (8) Patents Granted or Pending are in the process.
  • www.FloatNRG.com 

www.renewablenergypumps.com  

FloatNRG.com 

PATENTS

  • A patent was granted by the USPTO under number US 7,391,127 B2 dated Jun 24. 2008 under; RenewableEnergyWavePumps.
  • “Coordinated Offshore Energy Extraction” (COEE) system, for extracting energy from; waves, ebb/tides, solar and wind is are four (4) pending patents.
  • “Coordinated Floating Energy Extraction Equipment” (COFEQ), including floating wind turbine supports, floating bridges and floating islands are three (3) pending patents.
  • A total of eight (8) Patents Granted or Pending are in the process.
  • Followers at Linkedin 5,900+

 

Changing the future