Super Watt Wave Catcher Barge

Transcription

1 Super Watt Wave Catcher Barge Powers At Least Four Direct Drive Wind Turbine Type Generators Dry Enclosure Horizontal Mooring Legs Upper Section - Spiral Strand Wire Rope and Seabed Section Chain Vertical Mooring Leg Upper Section - Reinforced Rubber Belt Top Buoys Flexible Export Power Cable Vertical Mooring Leg Lower Section - Polyester Rope Gravity Anchors For Vertical Mooring Legs Each Vertical Polyester Mooring Leg s Top Rubber Belts Turns A Direct Drive Wind Turbine Generator Located Under A Water Tight Top Of Barge Enclosure. The Conventional Plastic Sheathed Steel Wire Rope and Chain Catenary Horizontal Mooring System Holds The Barge Through 100 Year Storms. Power Is Exported Through Lazy S Export Power Umbilical. The Barge Is Towed To Site And Its Own Winches Are Used To Connect To Its Pre-laid Mooring Lines, With ROV Assistance. Maintenance Crews Can Access The Barge By Helicopter or Boat. May 9,

2 The Stevens Institute 1/50 th Scale Model Test of the SWWCB Recorded a 650 Metric Tonnes Change In Mooring Line Load For Load Case M5s 40 (Hs=5.58m/ Tp=12 sec) May 9,

3 Super Watt Wave Catcher Barge Full Scale Dimensions This presentation documents the basis of costs for the Super Watt Wave Catcher Barge for an offshore Oregon or Washington type installation site in about 100 meters of water. The costs include recent design updates, a design for most components, vertical and horizontal mooring system cost quotes, 20% contingency, etc. and are based on the economies of scale and the efficiency of a large power farm installation. The resulting CAPEX and OPEX are significantly less than land based wind power. With an expected capacity factor of about 60%, Super Watt Wave Catcher Barges should be the lowest LCOE power plant option near significant wave locations. Super Watt Wave Catcher Barges can be sized for larger swell wave locations and produce even better economics. Super Watt Wave Catcher Barges can be sized for smaller swell wave locations and still produce better economics than land based wind power. Water Depth Power Generation Vertical Mooring System Storm Survival Horizontal Mooring System Super Watt Wave Catcher Barge Hull and Enclosure Structural Weight Weight of One Vertical Mooring System Gravty Anchor Mechanical Equipment Weight 100 Meters Off the West Coast of the USA 4-80 meter Long 230 mm OD Polyester Mooring Rope Vertical Mooring Legs With Connectors 4-1.5m OD x 3 m Long Top Floats (One Supports Each Vertical Mooring Leg) m wide x.1 mm thick 94m Long Reinforced Rubber Belts (Each Belt is Assumed To Be Reinforced with 7-24mm OD Wire Rope) 4-8m x 8m x 5m High Gravity Weight Boxes With 1000MT of Iron Ore In Each Box 4-65mm OD 984m long Jacketed Spiral Strand Wire Rope Horizontal Mooring Legs With A MBL = 4042kN 4-65mm OD 1022m long Jacketed Spiral Strand Wire Rope Horizontal Mooring Legs With A MBL = 4042kN m long 64 mm R3 Studless Chain Lengths 6-6m OD x 10 m Long Suction Pile Anchors 2286 Metric Tonnes 850 Metric Tonnes 1575 Metric Tonnes As Broken Down Below: 4-6 Megawatt Direct Drive Generator at 150 MT Each 4 - Articulated Pulleys And Box Girder Supports at MT Each 12- Triangular Support Frames at 9.4 MT each 4 - Uni-directional Pulleys at 23 MT each 4- Flywheel & Recoil Spring at 62.2 MT Each Draft (Including the weight of four 6 Megawatt Direct Drive Wind Turbine Generators) 1.77 meters Hull Bottom Dimensions 61.5m x 37.5m x 4m deep Enclosure Dimensions 69.5 x 37.5m x 14.5 m high Hull Bottom 1/20th Model Scale Dimensions 3.075m x 1.875m x.2m deep (Bottom Area = ~5.75 m 2 ) + Hull Sides (~.615 m 2 ) x 2 Enclosure 1/20th Model Scale Dimensions 3.475m x 1.875m x.725 m high (~6.5 m 2 ) + Enclosure Sides = 2.5 m 2 ) x 2 Description Full Scale Weight (kg) Structural weight of hull & enclosure (60.78% of the over weight) 2,286,000 Equipment Weight (Breakdown below) (39.22% of the over weight) 1,575,448 4 Articulated Pulleys And Box Girder Supports (34.19 MT each) 136,760 4 Uni-directional Pulleys With Re-coil Springs (23.55MT Each) 94,200 4 Flywheels & Recoil Springs (157.6MT Each) 630,400 4 Wire Rope Reinforced Rubber Belts (.222 MT each) Triangular Supports (9.432 MT each) 113,200 6 Megawatt Direct Drive Generator Weight (150 MT each) 600,000 Total Weight Of Barge 3,861,448 Weight of One Vertical Mooring System Gravity Anchor (850MT) 850,000 Maximum Required Holding Capacity Of One Horizontal Mooring System Anchor Under 100 Year Storm Conditions (250MT) 250,000 Note 1: These mooring leg lengths are based on a passive horizontal mooring system. These lengths can be shorter for an active horizontal mooring system whose pretension can be increased prior to significant storms. May 9,

4 Conventional Steel Wire Rope and Chain Catenary Horizontal Mooring System Note 1: These mooring leg lengths are based on a passive horizontal mooring system. The lengths can be shorter for an active horizontal mooring system whose pretension is increased prior to significant storms. May 9,

5 Conventional Steel Wire Rope and Chain Catenary Horizontal Mooring System (Showing Possible Departure Angles and Near Barge Plastic Sheathed Wire Rope) May 9,

6 Super Watt Wave Catcher Barge (Showing Mechanical Equipment On The Barge Deck) 4- Direct Drive Wind Turbine Type Generators 4 Flywheels With Internal Recoil Springs 4 - Articulated Pulleys Reinforced Rubber Belts Top Buoys Polyester Rope May 9,

7 Super Watt Wave Catcher Barge (Port Side View Showing Mechanical Equipment On The Barge Deck) 4- Direct Drive Wind Turbine Type Generators 4 Flywheels With Internal Recoil Springs 4 - Articulated Pulleys 4-Uni-directional Pulleys May 9,

8 Super Watt Wave Catcher Barge (Plan View Showing Mechanical Equipment On The Barge Deck) 4-Uni-directional Pulleys 4- Direct Drive Wind Turbine Generators 4 - Articulated Pulleys 4 - Flywheels May 9,

9 Super Watt Wave Catcher Barge (Showing Barge Bottom Dimensions) Bow Stern 37.5m 53.5m 8 m May 9,

10 Super Watt Wave Catcher Barge (Showing Barge Stern) May 9,

11 Super Watt Wave Catcher Barge (View Of Barge s Port Side Stern) May 9,

12 Super Watt Wave Catcher Barge (Showing New Barge Stern Dimensions To Increase Stern Generator Power Output To Match Bow Generator Power Output) May 9,

13 Super Watt Wave Catcher Barge (Barge Stern-No Rake Needed To Resisted Horizontal Wave Forces) May 9,

14 Super Watt Wave Catcher Barge (Showing Barge Bow) May 9,

15 Super Watt Wave Catcher Barge (Barge Bow-Rake Needed To Resisted Horizontal Wave Forces) May 9,

16 Super Watt Wave Catcher Barge (Close Up View of A Wet Room With Its Articulated Pulley) May 9,

17 Super Watt Wave Catcher Barge (6 meter OD Articulated Pulley With Support Box Girder Dimensions) May 9,

18 Super Watt Wave Catcher Barge (6 meter OD Articulated Pulley With Support Section) May 9,

19 Super Watt Wave Catcher Barge (Showing Mechanical Equipment On The Barge Deck) 4-Uni-directional Pulleys 4 - Flywheels 4- Direct Drive Wind Turbine Generators May 9,

20 Super Watt Wave Catcher Barge (Showing Mechanical Equipment On The Barge Deck) May 9,

21 Super Watt Wave Catcher Barge (Showing Mechanical Equipment On The Barge Deck) 4 Blue Recoil Springs Inside Flywheels May 9,

22 Super Watt Wave Catcher Barge (1/20 th Scale Model Mooring Line Length Scales to 60 Meters In Length Noted In Parenthesis) May 9,

23 Super Watt Wave Catcher Barge s Horizontal Mooring System Real World Suction Pile Anchors Suction Pile Extends About 1 Meter Above the Seabed After Installation Mooring Line Burial During Preloading Mooring Line Attachment To Suction Pile At ~ ½ Suction Pile Penetration Mooring Line Burial During Preloading May 9,

24 Super Watt Wave Catcher Barge s Horizontal Mooring System s Gravity Anchors (1/20 th Scale Model Dimensions Are In Parenthesis) Each Horizontal Mooring System s Gravity Anchor Must Provide 31.kilograms of Sliding Resistance Force On The Test Tank Bottom May 9,

25 Horizontal Mooring System 6 m OD Suction Pile Anchors (Suction piles are lowered to the seabed by an MPSV s AHC crane. The MPSV s ROV which helps pump the pile to design penetration in the same way that suction piles are installed worldwide. When all piles and mooring lines have been installed by the MPSV, the MPSV will pretension the mooring lines and leave the mooring lines with messenger cables to surface floats.) Suction Pile Anchor Padeye 6 m OD 15 MT Suction Pile Anchors May 9,

26 Vertical Mooring System Gravity Anchors (If Vertical Mooring Loads Become Too High, The Gravity Anchors Lift Off The Seabed Limiting the Load On The Vertical Mooring Legs. The Guide Piles Return The Gravity Anchors To Their Original Location. Iron Ore Weight Requirement Is Reduced By Gravity Anchor Suction.) Gravity anchors at the bottom of each vertical mooring line prevent mooring line overload in the event mooring line clutch disengagement failure. May 9,

27 Vertical Mooring System Gravity Anchors (If Vertical Mooring Loads Become Too High, The Gravity Anchors Lift Off The Seabed Limiting the Load On The Vertical Mooring Legs. The Guide Piles Return The Gravity Anchors To Their Original Location. Iron Ore Weight Requirement Is Reduced By Gravity Anchor Suction.) 10m OD x 6m High Gravity Anchor Plus 1000 MT of Iron Ore May 9, Description Weight of Ore Required= 1,000 MT Unit Weight (kg) / m 3 Volume Required (m 3 ) Weight (kg) Volume of Ore Required = 1,000 MT / 2500 kg/m 3 = 400 m 3 required Iron Ore Costs ($40/Metric Tonne) Iron Ore Gravity Anchor Weight = 10m OD x 6m high x.025m thick = 200 m Iron Ore Gravity Anchor Guide Pile Weight = 1m OD x 12 m high x.025m thick = 10 m Iron Ore Gravity Anchor Bulkhead = 6m x 10m = 60 m Iron Ore Gravity Anchor Bottom + Misc Weight = 100 m

28 Vertical Mooring System Gravity Anchors (If Vertical Mooring Loads Become Too High, The Gravity Anchors Lift Off The Seabed Limiting the Load On The Vertical Mooring Legs. The Guide Piles Return The Gravity Anchors To Their Original Location. Iron Ore Weight Requirement Is Reduced By Gravity Anchor Suction.) 10m OD x 6m High Gravity Anchor Plus 1000 MT of Iron Ore Unit Weight (kg) / m 3 Volume Required (m 3 ) Weight (kg) Description Iron Ore Gravity Anchor Weight = 10m OD x 6m high x.025m thick = 200 m Iron Ore Gravity Anchor Guide Pile Weight = 1m OD x 12 m high x.025m thick = 10 m Iron Ore Gravity Anchor Bulkhead = 6m x 10m = 60 m Iron Ore Gravity Anchor Bottom + Misc Weight = 100 m The 76 MT empty gravity anchor is lowered to seabed by MPSV AHC crane and fills the gravity anchor with iron ore slurry just like a spar buoy is ballasted. May 9,

29 1-20th Scale Super Watt Wave Catcher Barge Vertical Mooring System Gravity Anchor (1/20 th Scale Model Dimensions Are In Parenthesis) Skirt Piles Maintain The Gravity Anchor Horizontal Location and Allow the Gravity Anchors To Lift Off the Seabed In The Event of Unexpected Excessive Wave Loading Preventing Vertical Mooring Line Overloading. Normally remotely disengaging the generators prior to excessive storm loading will prevent vertical mooring line overloading. However, as a backup, the gravity anchors can be sized to lift off the seabed prior to exceeding the vertical mooring lines Maximum Breaking Load (MBL). May 9,

30 Vertical Mooring System - 1.5m OD x 3 m Long Top Floats Top Floats: 1.5m OD x 3 m Top Float Sizing Length of polyester ropse that needs top support = 75 meters Top force needed for polyester rope top support = 75 meters x 8.4 kg = 630 kg Size of top float = top force needed x 3 = 2,000 kg = 2 m 3 May 9,

31 Rubber Belts Rubber Belts Top Floats: 1.5m OD x 3 m May 9,

32 Rubber Belts Reinforced with 7-24mm OD Wire Rope Rubber Belts May 9,

33 Rubber Belts Reinforced with 7-24mm OD Wire Rope Rubber Belts Top Floats Polyester Vertical Mooring Rope May 9,

34 May 9,

35 Super Watt Wave Catcher Barge (With Full Scale and 1/20 th Scale Dimensions in Parenthesis) May 9,

36 Super Watt Wave Catcher Barge (With Full Scale and 1/20 th Scale Dimensions in Parenthesis) May 9,

37 Super Watt Wave Catcher Barge (With Full Scale and 1/20 th Scale Dimensions in Parenthesis) May 9,

38 Super Watt Wave Catcher Barge (1/20 th Scale Model Dimensions Are In Parenthesis) Side skirts increase the vertical drag coefficient of the hull s bottom increasing the lift force of the waves. Side skirts also reduce vessel yaw. May 9,

39 Super Watt Wave Catcher Barge (With Full Scale and 1/20 th Scale Dimensions in Parenthesis) May 9,

40 6 Mega Watt Direct Drive Wind Turbine Generators Super Watt Wave Catcher Barge (1/20 th Scale Model Dimensions Are In Parenthesis) Blue Recoil Spring Housing Generator Drive Belt Flywheel With Recoil Spring Vertical Mooring System Belt Uni-Directional Pulley May 9,

41 Super Watt Wave Catcher Barge (1/20 th Scale Model Dimensions Are In Parenthesis) Flywheel Recoil Spring is shown without housing Note: A video is available on the shared drive demonstrating the flywheel and recoil combination without housing. May 9,

42 Super Watt Wave Catcher Barge (1/20 th Scale Model Dimensions Are In Parenthesis) Recoil Spring Attached to Flywheel Flywheel Bearing Supported By Central Shaft Recoil Spring Attached to Central Shaft Note: A video is available on the shared drive demonstrating the flywheel and recoil combination without housing. May 9,

43 Super Watt Wave Catcher Barge (1/20 th Scale Model Dimensions Are In Parenthesis) Flywheel Bearing Supported By Central Shaft Recoil Spring Attached to Central Shaft Note: A video is available on the shared drive demonstrating the flywheel and recoil combination without housing. May 9,

44 Super Watt Wave Catcher Barge Principles of Operation May 9,

45 The Stricklin Tide Supply Vessel Rolling In Swells Waves Offshore Angola Video of the Stricklin Tide supply vessel on a normal day offshore Angola. Video taken from the Belize Lobito Tomboco (BBLT) Compliant Piled Tower Platform in 384 m water depth. Vessel: STRICKLIN TIDE (IMO: ) Vessel Deadweight: 1816 t Vessel Length Breadth: 60m 16m May 9,

46 When the barge is lifted up by the swell wave crests, the mooring lines pull down on the perimeter of the uni-directional pulleys turning the uni-directional pulleys, the flywheels recoil springs, the flywheels themselves and the generators on the barge. May 9,

47 When the wave trough lowers the barge, the uni-directional pulley recoil springs rewind the mooring belts back on the pulleys keeping mooring lines tight at all times and get ready for the next wave crest. The flywheel s recoil springs store wave energy during the crest loading and release the energy to the flywheels during crest and trough loading. The flywheel also stores energy in the form of momentum which keeps the generators turning as a fairly constant RPM. May 9,

48 Monthly Wave Height Non-Exceedence (NW Shetlands, UK) May 9,

49 Super Watt Wave Catcher Barge Principles of Operation 6m radius / lever arm Draft (Meter) Vertical Force/ Meter of Sea Water Displacement Average Length (m) Water Displacement (m 3 ) Vertical Force/ Meter of Sea Water Displacement (Metric Tonnes) Waterline Length (m) Width (m) Reinforced Rubber Belt Like Used In Car Engines When a 1 meter high swell wave passes, the total force in the barge s mooring lines is roughly equal to the displacement of the barge s hull. The left table shows a meter of barge displacement equals 2135 metric tonnes of vertical force or 533 metric tonnes per mooring leg. The mooring belts pull on the perimeter of the 6 meter radius unidirectional pulley-flywheel combination resulting in a torque of approximately 3200 metric tonnemeters, which is 3 times the torque required of a 10 megawatt direct drive wind turbine generator. 533 MT/ meter of wave height Unidirectional Pulley With Large And Small Recoil Springs The mooring belts wrap completely around the unidirectional pulleys unwind the belts during wave crest loading and re-winding them during trough unloading. The length of the belts will exceed the length required for the extreme storm event. May 9,

50 6m radius / lever arm Super Watt Wave Catcher Barge Principles of Operation During wave trough unloading the uni-directional pulley s recoil springs rewind the belts back on the unidirectional pulleys in preparation for the next wave crest loading Reinforced Rubber Belt Like Used In Car Engines Unidirectional Pulley With Large And Small Recoil Springs The mooring belts wrap completely around the unidirectional pulleys unwind the belts during wave crest loading and re-winding them during trough unloading. The length of the belts will exceed the length required for the extreme storm event. May 9,

51 Super Watt Wave Catcher Barge Principles of Operation The flywheel recoil springs store wave energy during the crest loading and release the energy to the flywheels during crest and trough loading. The flywheels store energy in the form of momentum. The combination delivers fairly constant torque to the generators. The flywheel recoil springs eliminated spike loads, sometimes called snatch loads, on the vertical mooring legs and the mechanical components. Illustrates one direct drive wind turbine type generator Direction of Rotation Reinforced Rubber Belt Like Used In Car Engines The belts wrap completely around the unidirectional pulleys allowing them to unwind and re-wind as the barge rises and falls during 100 year + storms May 9,

52 Super Watt Wave Catcher Barge Principles of Operation The flywheel recoil springs store wave energy during the crest loading and release the energy to the flywheels during crest and trough loading. The flywheels store energy in the form of momentum. The combination delivers fairly constant torque to the generators. The flywheel recoil springs eliminated spike loads, sometimes called snatch loads, on the vertical mooring legs and the mechanical components. flywheel recoil springs Uni-directional pulley recoil springs May 9,

53 Wind Turbine Generator Torque 4000 (408 mtm) (1020 metric tonne-meters) Source: Review of Generator Systems for Direct-Drive Wind Turbines D. Bang, H. Polinder, G. Shrestha, J.A. Ferreira Electrical Power Processing / DUWIND Delft University of Technology Mekelweg 4, 2628 CD Delft The Netherlands Phone: +31 (0) , Fax: +31 (0) D.J.Bang@tudelft.nl, H.Polinder@tudelft.nl, G.Shrestha@tudelft.nl, J.A.Ferreira@tudelft.nl May 9,

54 AMSC s 10 Megawatt Direct Drive Wind Turbine Generator (Nacelle 160 metric tonnes x 5 meters OD x 10 meters long) May 9,

55 Enercon E MW Direct Drive Wind Turbine Annular Generator May 9,

56 Enercon E MW Direct Drive Wind Turbine Annular Generator May 9,

57 Enercon E MW Direct Drive Wind Turbine Annular Generator May 9,

58 Enercon E MW Direct Drive Wind Turbine Annular Generator Enercon Models SUB MW E-48 / 800 KW E-53 / 800 KW E-44 / 900 KW MW E-70 / 2,300 KW E-82 E2 / 2,000 KW E-82 E2 / 2,300 KW E-82 E4 / 2,350 KW E-82 E4 / 3,000 KW E-92 / 2,350 KW E-101 / 3,050 KW E-101 E2 / 3,500 KW E-115 / 3,000 KW E-126 EP4 MULTI MW E-126 / 7,580 KW May 9,