This document provides an overview of the BLACKBIRD concept, which is a hybrid floating offshore wind turbine and wave energy converter system. The key elements discussed include a vertical axis wind turbine, uniaxial submerged tension leg buoy float, linear magnetic geared interior permanent magnet generator, integrated power takeoff units, single vertical damped tether, subsea ball and taper connector, subsea concrete storage and electrolysis unit, and seabed rock anchored foundation template. The document also discusses challenges with existing offshore wind technologies and the potential benefits of the BLACKBIRD concept.
This document is a report on a project to design a vertical axis wind turbine. It includes an introduction that discusses wind energy and the advantages of vertical axis turbines. It then summarizes the key parts of a vertical axis wind turbine, including the base structure, blades, shaft, bearings, and electric dynamo. The report also categorizes and describes different types of vertical axis wind turbines, such as Savonius, Darrieus, and hybrid designs. Overall, the document provides an overview of vertical axis wind turbines and the project to design one.
Turbina Vawt Technology For Green Telecom Power Supplytvin
Turbina develops vertical axis wind turbines as an off-grid power solution for remote telecom towers. Their technology uses fixed stator panels to guide wind efficiently onto rotor blades, achieving power output up to 20KW with lower cut-in wind speeds than conventional designs. Turbina partners with Sitel to develop and test hybrid systems combining their turbines with solar panels. Prototypes have been tested in various conditions and potential applications include powering cellular networks, traffic monitoring, and households.
LOW EXPENSE VERTICAL AXIS WIND TURBINE USING PERMANENT MAGNETSIAEME Publication
Wind turbines are devices that convert the wind's kinetic energy into electrical power. The result of over a millennium of windmill development and modern engineering, today's wind turbines are manufactured in a wide range of horizontal axis and vertical axis types. The smallest turbines are used for applications such as battery charging for auxiliary power. Slightly larger turbines can be used for making small contributions to a domestic power supply while selling unused power back to the utility supplier via the electrical grid. Arrays of large turbines, known as wind farms, have become an increasingly important source of renewable energy and are used in many countries as part of a strategy to reduce their reliance on fossil fuels.
Until we know that large wind turbines/mills to generate electricity. But the technology advanced such that these wind turbines came to our home for our domestical use. In this ppt I discussed about new small residential wind turbines by which we can reduce our electrical bills and more. Have a look!
This project of Maglev windmill on the implementation of an alternate configuration of a wind turbine for power generation purposes. Using the effects of magnetic repulsion, spiral shaped wind turbine blades will be fitted on a rod for stability during rotation and suspended on magnets as a replacement for ball bearings which are normally used on conventional wind turbines. Power will then be generated with an axial flux generator, which incorporates the use of permanent magnets and a set of coils.
Subscribe My Youtube Channel For More Support....
https://www.youtube.com/channel/UCjI2ahxNNvYRc1X5hQIE78A
The document discusses vertical axis wind turbines (VAWT) as an option for generating renewable wind energy. It provides details on VAWT advantages over traditional horizontal axis turbines, including that they can be installed at ground level and operate in winds from any direction. Multiple VAWT models are described ranging from 500W to 20,000W capacity that are suitable for residential or commercial use.
This document discusses limitations of current wind turbine generator (WTG) technology and potential solutions. It provides an overview of WTG design considerations such as the number and shape of blades. It also discusses studies on improving efficiency, including Betz's law stating no turbine can capture over 59.3% of wind's kinetic energy. Recent trends aimed at increasing efficiency and reducing noise and dangers are described, such as gearless and permanent magnet synchronous generator WTGs. The document concludes that while India has significant wind power potential, only 37% is currently harvested, and new WTG designs are needed to overcome limitations around efficiency, noise and wildlife safety.
This document is a report on a project to design a vertical axis wind turbine. It includes an introduction that discusses wind energy and the advantages of vertical axis turbines. It then summarizes the key parts of a vertical axis wind turbine, including the base structure, blades, shaft, bearings, and electric dynamo. The report also categorizes and describes different types of vertical axis wind turbines, such as Savonius, Darrieus, and hybrid designs. Overall, the document provides an overview of vertical axis wind turbines and the project to design one.
Turbina Vawt Technology For Green Telecom Power Supplytvin
Turbina develops vertical axis wind turbines as an off-grid power solution for remote telecom towers. Their technology uses fixed stator panels to guide wind efficiently onto rotor blades, achieving power output up to 20KW with lower cut-in wind speeds than conventional designs. Turbina partners with Sitel to develop and test hybrid systems combining their turbines with solar panels. Prototypes have been tested in various conditions and potential applications include powering cellular networks, traffic monitoring, and households.
LOW EXPENSE VERTICAL AXIS WIND TURBINE USING PERMANENT MAGNETSIAEME Publication
Wind turbines are devices that convert the wind's kinetic energy into electrical power. The result of over a millennium of windmill development and modern engineering, today's wind turbines are manufactured in a wide range of horizontal axis and vertical axis types. The smallest turbines are used for applications such as battery charging for auxiliary power. Slightly larger turbines can be used for making small contributions to a domestic power supply while selling unused power back to the utility supplier via the electrical grid. Arrays of large turbines, known as wind farms, have become an increasingly important source of renewable energy and are used in many countries as part of a strategy to reduce their reliance on fossil fuels.
Until we know that large wind turbines/mills to generate electricity. But the technology advanced such that these wind turbines came to our home for our domestical use. In this ppt I discussed about new small residential wind turbines by which we can reduce our electrical bills and more. Have a look!
This project of Maglev windmill on the implementation of an alternate configuration of a wind turbine for power generation purposes. Using the effects of magnetic repulsion, spiral shaped wind turbine blades will be fitted on a rod for stability during rotation and suspended on magnets as a replacement for ball bearings which are normally used on conventional wind turbines. Power will then be generated with an axial flux generator, which incorporates the use of permanent magnets and a set of coils.
Subscribe My Youtube Channel For More Support....
https://www.youtube.com/channel/UCjI2ahxNNvYRc1X5hQIE78A
The document discusses vertical axis wind turbines (VAWT) as an option for generating renewable wind energy. It provides details on VAWT advantages over traditional horizontal axis turbines, including that they can be installed at ground level and operate in winds from any direction. Multiple VAWT models are described ranging from 500W to 20,000W capacity that are suitable for residential or commercial use.
This document discusses limitations of current wind turbine generator (WTG) technology and potential solutions. It provides an overview of WTG design considerations such as the number and shape of blades. It also discusses studies on improving efficiency, including Betz's law stating no turbine can capture over 59.3% of wind's kinetic energy. Recent trends aimed at increasing efficiency and reducing noise and dangers are described, such as gearless and permanent magnet synchronous generator WTGs. The document concludes that while India has significant wind power potential, only 37% is currently harvested, and new WTG designs are needed to overcome limitations around efficiency, noise and wildlife safety.
This document provides an abstract and introduction for a project proposal on a working model of a maglev windmill. It summarizes that conventional windmills use mechanical bearings that create friction, while a maglev windmill would use magnetic levitation to eliminate friction. This would allow the turbine to operate in very low wind speeds. The document then reviews several sources that propose maglev wind turbines could have higher efficiency and be able to operate in a wider range of wind speeds than traditional designs. The project aims to design and implement a vertical axis maglev wind turbine that can harness wind power for electricity generation.
This document provides an overview of wind energy fundamentals and design considerations for wind turbines. It discusses how wind power depends on air volume, velocity, and density. It also explains power coefficients and the Betz limit for wind turbine efficiency. The two main types of wind turbines - horizontal axis and vertical axis - are described. Key design considerations for wind turbines include the number of blades, blade composition and construction, and factors that influence turbine performance like airfoil shape, twist, taper, tip-speed ratio, and rotor solidity.
Typmarvn_Vertical and Herizontal Axis Wind TurbineThai Minh Dan
TYPMAR presented a proposal for a hybrid wind and solar street light system. They discussed how their vertical axis wind turbine, called a Maglev wind turbine, has several advantages over traditional horizontal axis wind turbines, such as being able to generate power starting at very low wind speeds, having no mechanical components so it is quieter and lower maintenance, and having lightning protection built into its design. They proposed installing their Maglev wind turbines combined with solar panels on street lights to provide a green energy solution for powering public lighting. The presentation provided details on their wind turbine and company, as well as examples of their products being used for applications like street lighting and on ships.
This presentation summarizes the design and operation of a vertical axis wind turbine (VAWT) created by a group of students to generate 10 watts of DC power from wind. Key points include:
1) The VAWT was designed to operate efficiently in urban and suburban areas and does not need to be oriented into the wind.
2) It works at lower wind speeds than a horizontal axis turbine and can place the generator at ground level for easy access and maintenance.
3) The presentation outlines the turbine components, measurement of wind speed, advantages of VAWTs such as being omni-directional and producing less stress on support structures, and concludes with potential future improvements.
This document describes the design and fabrication of a vertical axis wind turbine. It begins with introductions to wind power and the kinetic energy in wind. It then discusses the different types of vertical axis wind turbines, including Darrieus, giromill, and Savonius designs. The document provides details on the design of the turbine blades, shaft, bearings, and electric dynamo. It includes the specifications of the turbine as well as the fabrication techniques and theoretical calculations used to determine the available wind power at different wind velocities. In conclusion, the vertical axis wind turbine design is found to be practical and capable of generating renewable electricity even under less than ideal wind conditions.
This document discusses harnessing wind power from high altitude winds using tethered wind turbines. It describes two designs - a four-rotor tethered craft and the HK design, which is an array of small units each with four rotors. Both designs use generators and conductive tethers to transmit the generated electrical power to the ground. Projections indicate the cost of energy from these systems would be competitive at $0.01-$0.02/kWh. Harnessing high-altitude winds is a promising renewable energy source due to the strong, persistent winds and limited environmental impacts.
This document describes a student project to design and build a vertical axis wind turbine (VAWT). It provides background on wind energy and different types of wind turbines. It then details the design and construction process for the VAWT, including conceptual designs, fabrication of blades and supports, and testing specifications. The summary concludes that VAWTs provide an efficient and low-cost way to harness wind power for small-scale energy production.
The document describes the features of the VertiGO vertical axis wind turbine system. Some key features include a low start up wind speed of 0.5m/s, resistance to high storm winds up to 160km/h, compatibility with both on-grid and off-grid installations, ability to generate power in low wind speeds, and international patent protection. It provides detailed technical specifications and performance comparisons for various VertiGO turbine models ranging from 5KW to 50KW.
This document describes a proposed maglev windmill design. Some key points:
- The maglev windmill uses magnetic levitation to suspend the turbine blades in air, eliminating mechanical friction and allowing the turbine to operate in very low wind speeds starting at 1.5 m/s.
- The design aims to increase power generation capacity by 20% over conventional wind turbines and decrease operational costs by 50% by using magnetic levitation bearings.
- The document provides background on wind power technologies, components of conventional wind turbines, and introduces the concept of using an axial flux generator and magnetic levitation in the proposed maglev windmill design.
Design and construction of vertical axis wind turbineIAEME Publication
This document describes the design and construction of a vertical axis wind turbine. It aims to generate enough electricity for domestic use in rural areas with minimal costs. The turbine is designed to be 1m in diameter and 1m in height to capture 1 square meter of wind. It uses three J-shaped blades made of galvanized iron sheets. Testing showed the turbine generated up to 26.4 watts of power, achieving an efficiency of 23.3%. While lower than theoretical maximum efficiency, the design shows potential for power generation in off-grid rural applications. Future work may aim to further improve efficiency through more optimized blade designs.
Stephen was part of a team of 8 engineers that conceptually designed a wind turbine that would maximize energy output while minimizing avian fatalities by designing several solutions. Stephen worked with the team to decide on which solution to implement. Stephen worked and collaborated with the team to write a project report, and was responsible for setting up meetings and creating/updating up the project schedule using a Gantt Chart. In addition, Stephen worked on one of the 3 alternative solutions presented in this report.
Renewable energy is generally electricity supplied from sources, such as wind power, solar power,
geothermal energy, hydro power and various forms of biomass. The popularity of renewable energy
has experienced a significant upsurge in recent times due to the exhaustion of conventional power
generation methods and increasing realization of its adverse effects on the environment. Wind energy
has been harnessed for centuries but it has only emerged as a major part of our energy solution quite
recently and this report focus on utilizing wind energy by using vertical axis wind turbine.
Wind turbines convert the kinetic energy of wind into electrical energy. There are two main types of wind turbines: horizontal axis wind turbines (HAWT) and vertical axis wind turbines (VAWT). HAWTs have taller towers for access to stronger winds and are more efficient than VAWTs, but also have higher costs. VAWTs have lower construction costs, can operate in lower wind speeds, and do not need to be pointed at the wind. Both turbine types have advantages and disadvantages for efficiency, costs, and environmental impacts. Overall, wind energy provides clean, renewable power but also faces challenges from noise, aesthetics, and competition with conventional energy sources.
Design & Analysis of a Helical Cross Flow TurbineAnish Anand
We investigate the flow past a cross flow hydrokinetic turbine (CFHT)in which a helical blade turns around a shaft perpendicular to the free stream under the hydrodynamic forces exerted by the flow. The ability of a cross flow turbine to rotate in the same direction independent of the water flow direction gives an advantage for hydrokinetic applications.
This type of turbine, while very different from the classical horizontal axis turbine commonly used in the wind energy field, presents advantages in the context of hydro kinetic energy harvesting, such as independence from current direction, including reversibility, stacking, and self-starting without complex pitch mechanisms.
This presentation discusses vertical axis wind turbines (VAWT). It begins with an introduction to wind power and defines VAWTs. Key points made include that VAWTs can accept wind from any direction, have generators mounted at ground level for easy maintenance, and are well suited to urban environments. The presentation covers the basic design and operation of VAWTs, including their advantages of lower wind speeds needed and omnidirectional wind capture, compared to horizontal axis turbines. Applications and future developments are also discussed, such as creating self-starting VAWTs and reducing power fluctuations.
This document presents information on X-Wind technology, an airborne wind energy system that uses tethered kites to harness wind power. Key points:
- X-Wind plants combine well-known technologies like kites, generators, and track systems to generate electricity from wind in a more efficient manner than conventional wind turbines.
- Kites are able to fly at higher altitudes where wind speeds are greater, allowing the systems to generate power over 90% of the time compared to 10-40% for traditional wind turbines.
- Initial test flights in 2012 were successful in producing energy. The technology aims to make wind power comparable in cost to fossil fuels and provide grid stability benefits through dispatchable generation.
The document summarizes the design and testing of a vertical axis wind turbine (VAWT) model for use in urban environments. It describes the advantages and disadvantages of VAWTs compared to horizontal axis wind turbines. Testing was conducted in a wind tunnel on a 3-blade Darrieus VAWT model both with and without an augmenter. Results showed the turbine's performance improved with higher wind speeds and positive blade pitch angles. While measurement accuracy was limited, the testing provided insights that higher turbine speeds and a larger design could increase efficiency for urban wind conditions.
Analyzed, optimized, and prototyped design patented by Dr. Gecheng Zha of a carbon fiber VAWT; unique in its usage of a concentric outer ring of fixed stator blades which direct and accelerate airflow. Achieved optimized turbine efficiency of 22.25% (a 57.15% increase over base-model efficiency).
Advisor: Dr. Gecheng Zha.
This is about magnetically levitated maglev windmill.
Subscribe My Youtube Channel For More Support....
https://www.youtube.com/channel/UCjI2ahxNNvYRc1X5hQIE78A
The document discusses the use of magnetic levitation for wind turbines. It begins with an overview of wind energy and the increasing global demand for electricity. It then describes how magnetic levitation wind turbines work, including their vertical axis design and use of permanent magnets to levitate and spin the turbine with minimal friction. Benefits include higher efficiency, ability to operate in lower winds, reduced maintenance needs compared to traditional horizontal axis turbines. Applications include use in urban areas and remote locations not suited for large conventional turbines. Overall, the document provides an introduction to magnetic levitation wind turbines and their advantages over traditional horizontal axis designs.
The document discusses offshore wind turbine foundations and monopile connections. It notes that early monopile foundations used grout connections which often failed due to a lack of shear keys. This led to cracking, slipping, and lower than expected strength of the connections. Newer foundation designs incorporate shear keys and other improvements to address these issues and improve durability of the grout connections between monopiles and transition pieces.
Experimental study on effect of slot level on local scour around bridge piereSAT Journals
Abstract Many bridges in the world every year for Failure to consider in the design of hydraulic elements are destroyed. During the spring floods of 1987, 17 bridges in New York and New England were damaged or destroyed by scour. In 1985, 73 bridges were destroyed by floods in Pennsylvania, Virginia, and West Virginia. In the present study investigate effect application a slot , height “D” , width” D/4”in a circular pier ,where “D” is diameter of bridge pier and the size of 6 centimeters under 3 different discharges (values 35 , 40 , 45 Liter per second) and 4 different location of slot in a flume ,length 14 meters ,height 60 and width 60 centimeters. The experimental results show when height of slot is below the stream bed as D, scour depth will be reduced about 20.34% to 39.73% in front of the pier and scour volume approximately 46.84% to 75.74% Keywords: Bridge pier, Slot, Scour, scour depth, scour volume
This document provides an abstract and introduction for a project proposal on a working model of a maglev windmill. It summarizes that conventional windmills use mechanical bearings that create friction, while a maglev windmill would use magnetic levitation to eliminate friction. This would allow the turbine to operate in very low wind speeds. The document then reviews several sources that propose maglev wind turbines could have higher efficiency and be able to operate in a wider range of wind speeds than traditional designs. The project aims to design and implement a vertical axis maglev wind turbine that can harness wind power for electricity generation.
This document provides an overview of wind energy fundamentals and design considerations for wind turbines. It discusses how wind power depends on air volume, velocity, and density. It also explains power coefficients and the Betz limit for wind turbine efficiency. The two main types of wind turbines - horizontal axis and vertical axis - are described. Key design considerations for wind turbines include the number of blades, blade composition and construction, and factors that influence turbine performance like airfoil shape, twist, taper, tip-speed ratio, and rotor solidity.
Typmarvn_Vertical and Herizontal Axis Wind TurbineThai Minh Dan
TYPMAR presented a proposal for a hybrid wind and solar street light system. They discussed how their vertical axis wind turbine, called a Maglev wind turbine, has several advantages over traditional horizontal axis wind turbines, such as being able to generate power starting at very low wind speeds, having no mechanical components so it is quieter and lower maintenance, and having lightning protection built into its design. They proposed installing their Maglev wind turbines combined with solar panels on street lights to provide a green energy solution for powering public lighting. The presentation provided details on their wind turbine and company, as well as examples of their products being used for applications like street lighting and on ships.
This presentation summarizes the design and operation of a vertical axis wind turbine (VAWT) created by a group of students to generate 10 watts of DC power from wind. Key points include:
1) The VAWT was designed to operate efficiently in urban and suburban areas and does not need to be oriented into the wind.
2) It works at lower wind speeds than a horizontal axis turbine and can place the generator at ground level for easy access and maintenance.
3) The presentation outlines the turbine components, measurement of wind speed, advantages of VAWTs such as being omni-directional and producing less stress on support structures, and concludes with potential future improvements.
This document describes the design and fabrication of a vertical axis wind turbine. It begins with introductions to wind power and the kinetic energy in wind. It then discusses the different types of vertical axis wind turbines, including Darrieus, giromill, and Savonius designs. The document provides details on the design of the turbine blades, shaft, bearings, and electric dynamo. It includes the specifications of the turbine as well as the fabrication techniques and theoretical calculations used to determine the available wind power at different wind velocities. In conclusion, the vertical axis wind turbine design is found to be practical and capable of generating renewable electricity even under less than ideal wind conditions.
This document discusses harnessing wind power from high altitude winds using tethered wind turbines. It describes two designs - a four-rotor tethered craft and the HK design, which is an array of small units each with four rotors. Both designs use generators and conductive tethers to transmit the generated electrical power to the ground. Projections indicate the cost of energy from these systems would be competitive at $0.01-$0.02/kWh. Harnessing high-altitude winds is a promising renewable energy source due to the strong, persistent winds and limited environmental impacts.
This document describes a student project to design and build a vertical axis wind turbine (VAWT). It provides background on wind energy and different types of wind turbines. It then details the design and construction process for the VAWT, including conceptual designs, fabrication of blades and supports, and testing specifications. The summary concludes that VAWTs provide an efficient and low-cost way to harness wind power for small-scale energy production.
The document describes the features of the VertiGO vertical axis wind turbine system. Some key features include a low start up wind speed of 0.5m/s, resistance to high storm winds up to 160km/h, compatibility with both on-grid and off-grid installations, ability to generate power in low wind speeds, and international patent protection. It provides detailed technical specifications and performance comparisons for various VertiGO turbine models ranging from 5KW to 50KW.
This document describes a proposed maglev windmill design. Some key points:
- The maglev windmill uses magnetic levitation to suspend the turbine blades in air, eliminating mechanical friction and allowing the turbine to operate in very low wind speeds starting at 1.5 m/s.
- The design aims to increase power generation capacity by 20% over conventional wind turbines and decrease operational costs by 50% by using magnetic levitation bearings.
- The document provides background on wind power technologies, components of conventional wind turbines, and introduces the concept of using an axial flux generator and magnetic levitation in the proposed maglev windmill design.
Design and construction of vertical axis wind turbineIAEME Publication
This document describes the design and construction of a vertical axis wind turbine. It aims to generate enough electricity for domestic use in rural areas with minimal costs. The turbine is designed to be 1m in diameter and 1m in height to capture 1 square meter of wind. It uses three J-shaped blades made of galvanized iron sheets. Testing showed the turbine generated up to 26.4 watts of power, achieving an efficiency of 23.3%. While lower than theoretical maximum efficiency, the design shows potential for power generation in off-grid rural applications. Future work may aim to further improve efficiency through more optimized blade designs.
Stephen was part of a team of 8 engineers that conceptually designed a wind turbine that would maximize energy output while minimizing avian fatalities by designing several solutions. Stephen worked with the team to decide on which solution to implement. Stephen worked and collaborated with the team to write a project report, and was responsible for setting up meetings and creating/updating up the project schedule using a Gantt Chart. In addition, Stephen worked on one of the 3 alternative solutions presented in this report.
Renewable energy is generally electricity supplied from sources, such as wind power, solar power,
geothermal energy, hydro power and various forms of biomass. The popularity of renewable energy
has experienced a significant upsurge in recent times due to the exhaustion of conventional power
generation methods and increasing realization of its adverse effects on the environment. Wind energy
has been harnessed for centuries but it has only emerged as a major part of our energy solution quite
recently and this report focus on utilizing wind energy by using vertical axis wind turbine.
Wind turbines convert the kinetic energy of wind into electrical energy. There are two main types of wind turbines: horizontal axis wind turbines (HAWT) and vertical axis wind turbines (VAWT). HAWTs have taller towers for access to stronger winds and are more efficient than VAWTs, but also have higher costs. VAWTs have lower construction costs, can operate in lower wind speeds, and do not need to be pointed at the wind. Both turbine types have advantages and disadvantages for efficiency, costs, and environmental impacts. Overall, wind energy provides clean, renewable power but also faces challenges from noise, aesthetics, and competition with conventional energy sources.
Design & Analysis of a Helical Cross Flow TurbineAnish Anand
We investigate the flow past a cross flow hydrokinetic turbine (CFHT)in which a helical blade turns around a shaft perpendicular to the free stream under the hydrodynamic forces exerted by the flow. The ability of a cross flow turbine to rotate in the same direction independent of the water flow direction gives an advantage for hydrokinetic applications.
This type of turbine, while very different from the classical horizontal axis turbine commonly used in the wind energy field, presents advantages in the context of hydro kinetic energy harvesting, such as independence from current direction, including reversibility, stacking, and self-starting without complex pitch mechanisms.
This presentation discusses vertical axis wind turbines (VAWT). It begins with an introduction to wind power and defines VAWTs. Key points made include that VAWTs can accept wind from any direction, have generators mounted at ground level for easy maintenance, and are well suited to urban environments. The presentation covers the basic design and operation of VAWTs, including their advantages of lower wind speeds needed and omnidirectional wind capture, compared to horizontal axis turbines. Applications and future developments are also discussed, such as creating self-starting VAWTs and reducing power fluctuations.
This document presents information on X-Wind technology, an airborne wind energy system that uses tethered kites to harness wind power. Key points:
- X-Wind plants combine well-known technologies like kites, generators, and track systems to generate electricity from wind in a more efficient manner than conventional wind turbines.
- Kites are able to fly at higher altitudes where wind speeds are greater, allowing the systems to generate power over 90% of the time compared to 10-40% for traditional wind turbines.
- Initial test flights in 2012 were successful in producing energy. The technology aims to make wind power comparable in cost to fossil fuels and provide grid stability benefits through dispatchable generation.
The document summarizes the design and testing of a vertical axis wind turbine (VAWT) model for use in urban environments. It describes the advantages and disadvantages of VAWTs compared to horizontal axis wind turbines. Testing was conducted in a wind tunnel on a 3-blade Darrieus VAWT model both with and without an augmenter. Results showed the turbine's performance improved with higher wind speeds and positive blade pitch angles. While measurement accuracy was limited, the testing provided insights that higher turbine speeds and a larger design could increase efficiency for urban wind conditions.
Analyzed, optimized, and prototyped design patented by Dr. Gecheng Zha of a carbon fiber VAWT; unique in its usage of a concentric outer ring of fixed stator blades which direct and accelerate airflow. Achieved optimized turbine efficiency of 22.25% (a 57.15% increase over base-model efficiency).
Advisor: Dr. Gecheng Zha.
This is about magnetically levitated maglev windmill.
Subscribe My Youtube Channel For More Support....
https://www.youtube.com/channel/UCjI2ahxNNvYRc1X5hQIE78A
The document discusses the use of magnetic levitation for wind turbines. It begins with an overview of wind energy and the increasing global demand for electricity. It then describes how magnetic levitation wind turbines work, including their vertical axis design and use of permanent magnets to levitate and spin the turbine with minimal friction. Benefits include higher efficiency, ability to operate in lower winds, reduced maintenance needs compared to traditional horizontal axis turbines. Applications include use in urban areas and remote locations not suited for large conventional turbines. Overall, the document provides an introduction to magnetic levitation wind turbines and their advantages over traditional horizontal axis designs.
The document discusses offshore wind turbine foundations and monopile connections. It notes that early monopile foundations used grout connections which often failed due to a lack of shear keys. This led to cracking, slipping, and lower than expected strength of the connections. Newer foundation designs incorporate shear keys and other improvements to address these issues and improve durability of the grout connections between monopiles and transition pieces.
Experimental study on effect of slot level on local scour around bridge piereSAT Journals
Abstract Many bridges in the world every year for Failure to consider in the design of hydraulic elements are destroyed. During the spring floods of 1987, 17 bridges in New York and New England were damaged or destroyed by scour. In 1985, 73 bridges were destroyed by floods in Pennsylvania, Virginia, and West Virginia. In the present study investigate effect application a slot , height “D” , width” D/4”in a circular pier ,where “D” is diameter of bridge pier and the size of 6 centimeters under 3 different discharges (values 35 , 40 , 45 Liter per second) and 4 different location of slot in a flume ,length 14 meters ,height 60 and width 60 centimeters. The experimental results show when height of slot is below the stream bed as D, scour depth will be reduced about 20.34% to 39.73% in front of the pier and scour volume approximately 46.84% to 75.74% Keywords: Bridge pier, Slot, Scour, scour depth, scour volume
On 17/10/2013 TU Delft Climate Institute organised the symposium The Greenland and Antarctic ice sheets: present, future, and unknowns. This is one of the four presentations given there.
http://www.tudelft.nl/nl/actueel/agenda/event/detail/symposium-tu-delft-climate-institute-17th-october-2013/
Use of downstream facing aerofoil shaped bridge piers to reduce local scourIAEME Publication
This document discusses research on using downstream-facing aerofoil-shaped bridge piers to reduce local scour compared to traditional upstream-facing designs. It provides background on how scour occurs due to horseshoe vortices forming in front of piers. An experiment tested scour for circular, upstream-facing aerofoil, and downstream-facing aerofoil piers. Results showed the downstream-facing design reduced maximum scour depth by 59% versus the upstream aerofoil and 68% versus circular, and reduced the scour hole volume by 87% versus circular. Orienting the aerofoil shape to face downstream effectively weakened vortices causing scour.
Offshore wind innovation for cost reductionKate Freeman
This document discusses innovation in offshore wind power to reduce costs by 2030. It analyzes the impact of innovations on levelized cost of energy (LCOE) through both technical and commercial perspectives. Key innovations include increased turbine size, more efficient drive trains and components, improved blade aerodynamics and manufacturing, optimized plant development and array layout, advanced support structure design and installation, and condition-based maintenance. Adopting these innovations could reduce LCOE by over 40% compared to current offshore wind farms with 4MW turbines.
Scour investigation around single and two piers sidebyside arrangementeSAT Journals
Abstract Laboratory experiments concerning scour development around single and two piers side by side arrangement have been conducted in order to provide a comparison of scour depths and patterns. The experiments are carried out under unidirectional currents of clear-water scour conditions. A variety of conditions including different flow depths, pier diameters and pier spacing are considered to have significant influence on the development of the potential scour hole. The research on local scour around single and two piers side by side arrangement are studied by using a 15.24 m long, 0.46 m wide and 0.4 m deep flume in the Hydraulics and Hydrology Laboratory, Universiti Teknologi Malaysia (UTM).Experimental results describing the scour-hole depths and patterns are discussed. The results show that the magnitude and extent of the scour depth depends directly on pier size, pier spacing and flow condition. Piers, which are larger in diameter, produced greater scour depth. It also shows that by increasing the pier spacing, the scour depth around two piers decreases and closes to values of single pier. The two piers act as an obstruction which disturbed the flow field and caused large turbulence levels to be generated. Thereby, a further increase in the scouring velocity is produced giving relatively higher scour depth values. The prime factors governing the local scouring process associated with piers are pier spacing, horseshoe vortex, reinforcing and sheltering. The results show that good agreement with previous study where the down flow causes of increased scour for a single pier case. Meanwhile, the horseshoe vortex appears to be the main cause of scour in the case of two piers side by side arrangement. Keywords: Scour depth, Flow pattern, Single pier, Side by side piers, Pier spacing, Horseshoe vortex
Estimation of bridge pier scour for clear water & live bed scour conditionIAEME Publication
1) The document analyzes and compares several equations for estimating bridge pier scour depth under clear water and live bed conditions.
2) Statistical tests are used to validate the equations against experimental laboratory data from previous studies. The tests analyzed include Theil's Coefficient, Mean Absolute Error, and Root Mean Square Error.
3) The results show that for both clear water and live bed scour conditions, the Richardson equation generally provides the most reasonable estimates of scour depth compared to other common methods, according to the statistical test values.
EXPERIMENTAL STUDY OF BRIDGE PIER SHAPE TO MINIMIZE LOCAL SCOURIAEME Publication
The study of local scour around bridge piers is very important for safe design of piers and other hydraulic structures. In this study, shape of pier is the main concern with three different velocities (0.18, 0.25, and 0.3) m/sec and other parameters like flow depth, bed material and etc. are remain same for all experiments. The experiments were conducted using laboratory flume, operated under the clear water condition using sand as a bed material. The test program was done on ten different shapes, Circular, Rectangular, Octagonal, Chamfered, Hexagonal, Elliptical, Sharp, Joukowsky, Oblong, streamline. were used to investigate the effect of the bridge pier's shape on local scour to conclude the optimal shape that gives minimum depth of scour. Comparison of results show that scour at upstream is directly proportional to exposed area of upstream nose of pier.
The document discusses the impact of the Delta Works project in the Netherlands on recent developments in hydraulic engineering. The Delta Works project involved large-scale flood protection works completed in the 1970s, including storm surge barriers and coastal defenses. This project stimulated new research and innovation, leading to transitions in techniques such as the use of geotextiles and composite filters, load-based filter design, block revetments, and consideration of environmental impacts in project design. The Delta Works had a significant influence on advancing knowledge and practice in hydraulic engineering.
This document discusses bridge scour, which is the removal of sediment around bridge piers and abutments due to moving water. Scour can undermine bridge foundations and has caused 46 major bridge failures in the US from 1961-1976. The basic components of a bridge are the substructure, which includes piers, abutments and foundations, and the superstructure, which is the deck. Piers can be column or wall types and are vulnerable to scour, which forms scour holes through vortex formation and increased shear stress on sediments. The document presents photos of bridge failures from scour and methods to monitor and protect against scour using gravel bags, rock armor, and sonar scour monitors.
There are some really awesome vertical axis wind turbines designs that have been revealed in the last couple of years. We feature some of the best in this document. Visit: http://www.windgeneratorstoday.com
In this presentation, you will find the elements of a research project, as it is understood in the Master in Urbanism of the TU Delft. This is an adaptation of classical ways of organising a research project.
This document discusses using HEC-RAS software to analyze a river reach containing a single bridge. It outlines the input data needed, including geometric data and flow data. It then describes the steps to model the bridge, including adding the bridge, defining the geometry, and selecting modeling approaches. The document compares results from modeling the bridge as a pressure/weir and using the energy method. It notes that adjustments to contraction/expansion coefficients and cross section locations can improve results.
This document provides information about the Teesta Barrage at Dalia in Bangladesh. The Teesta Barrage is the largest irrigation project in Bangladesh, constructed between 1979-1997 by the Bangladesh Water Development Board and BUET. It is a 615m long concrete structure with 44 radial gates and a discharge capacity of 12,750 cusec. It benefits 750,000 hectares of land across 7 districts but also faces problems like insufficient water flow and conveyance losses.
This document summarizes a presentation on offshore wind energy given by Dr. C. R. Golightly. It discusses the history of wind energy and development of offshore wind farms. It notes that initial offshore wind farms were located in shallow waters near coastlines, but that floating wind turbines have potential to access much larger wind resources further from shore. The document also covers different types of foundations for offshore turbines and the need for innovation to reduce costs and increase efficiency of offshore wind energy production.
The document describes the BLACKBIRD, a proposed hybrid vertical axis wind turbine and wave energy converter attached to a tension leg buoy floating platform. It is at an early technology readiness level of 2. The BLACKBIRD aims to combine existing vertical axis wind turbine, wave energy converter, and tension leg platform technologies to harness both wind and wave energy offshore. It would be anchored to the seabed using a rock-anchored foundation template to provide stability. The design seeks to significantly reduce levelized costs of energy production for offshore wind compared to traditional offshore wind farms using fixed bottom or shallow draft floating turbines.
2015 Foundations for larger and deeper Offshore Wind MEC Intelligence
For offshore wind farms installations, foundation selection plays an important role in the overall concept design as there are large financial implications attached to the choices made. Foundation costs are primarily driven by material & installation costs and have been considered in this report.
New foundation designs have lower costs as turbines become larger and installed in deeper sea. For instance, 6 MW, new foundations are ~4-20% lower in material cost when compared to monopiles & jackets while for turbine sizes 8 MW and larger, new designs reduce the cost by ~21-24%. Cost reduction potential of 5-15% is observed for foundations at selected 5 farms in Europe. However, developers need to manage risk and other associated premium costs with appropriate contracting.
This reports presents detailed and fact based evaluation of foundations technologies for larger & deeper offshore wind farms. It also offers an evaluation of innovations that could assist in driving down the cost of the installation of foundation for offshore wind farm operations.
Influences on the Design and Viability of Large Offshore Wind Farms and their...Eduardo Barbosa
European Union is the world`s leader in offshore wind power.
Contributes to Europe`s goal of being competitive in the energy sector.
Electricity network are the bone structure of the electricity sector.
PS. That's not the full presentation, futher material can be access by email if necessary ny other information, due Slideshare do not upload the file notes.
This document summarizes the feasibility study of the WindFloat technology, a three-legged floating foundation designed to support offshore wind turbines in water depths from 30-50 meters. Key advantages of the floating foundation include flexibility in site location, access to stronger wind resources further offshore, and simpler offshore installation procedures compared to fixed foundations. The design draws on offshore oil and gas platform technologies while accounting for the different requirements of wind turbines. Hydrodynamic analysis and testing were performed to understand platform motions under wave and wind loads. Coupling of aerodynamic and hydrodynamic models allows for a more accurate analysis of interactions between the turbine and floating platform.
The document summarizes a study on developing vessels that can travel at practical speeds using only renewable energy sources. It discusses Planet Solar, the first solar-powered vessel to circumnavigate the globe. While Planet Solar proved the concept, its average speed was only 3-4 knots. The study explores using higher efficiency solar technologies like HCPV and integrating wind power to allow for faster speeds suitable for commercial use. It proposes a hybrid solar-wind vessel design with a 100kW HCPV solar array and advanced batteries that could achieve fuel-free travel for vessels up to 200 feet long.
The document summarizes a study on developing vessels that can travel at practical speeds using only renewable energy sources. It discusses Planet Solar, the first solar-powered vessel to circumnavigate the globe, and identifies areas for improvement. The study evaluates different technology options for power generation on a hypothetical hybrid solar-wind vessel, including high-concentration photovoltaics and wind power. It determines that a vessel with a 100 kW HCPV solar array and advanced batteries could achieve perpetual mobility without fossil fuels.
This document summarizes a study analyzing the feasibility of using solar and wind power to power vessels at practical speeds without fossil fuels. It discusses Planet Solar, the first solar-powered vessel to circumnavigate the globe between 2009-2012. While Planet Solar proved solar power can move vessels, its average speed was only 3-4 knots. The study explores technology improvements like higher efficiency solar panels and energy storage to enable faster, more practical speeds for commercial use at zero fuel costs. These include concepts like a hybrid solar/hydrogen vessel.
Sandia National Laboratories conducted research on large-scale floating offshore vertical axis wind turbines (VAWTs) to reduce the high costs of offshore wind energy. The research included rotor design studies that analyzed different configurations, platform and mooring system design studies, developing simulation codes for VAWTs, and investigating innovations to address challenges. The goal was to improve understanding of the technical and economic feasibility of floating offshore VAWT systems through a series of analyses including a levelized cost of energy analysis.
This document discusses alternative energy sources that could help power an offshore platform in Australia. It evaluates wind (horizontal and vertical axis turbines), wave (Pelamis, PowerBuoy, Wave Dragon devices), and solar (SolarBeam dishes and SunPower photovoltaic cells) technologies. Based on the site's wind speeds, water depths, and the platform's space constraints, the document models how different configurations of technologies could contribute power. It finds that installing 15 PowerBuoy wave energy devices could generate the most power at 13 MW annually and save over $600,000 in natural gas costs compared to solely using the platform's gas turbines.
Cal Marine Power & Water "straw" scam presentationFingerPointer
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1) The document describes a 8 MW reference wind turbine that was designed as part of an EU project to facilitate offshore wind research.
2) Key specifications of the 8 MW turbine are provided, including its power curve, thrust curve, dimensions, weights, and maximum design loads.
3) The 8 MW turbine was validated by engineers and is intended to serve as a standard reference point for research between existing 5 MW and 10 MW reference turbines.
The Development of Offshore Wind Industry in Asia and the EU copyKait Siegel
The document provides an overview of the history and current state of the global offshore wind industry. It discusses how offshore wind originated in Denmark in 1991 and has since expanded, led by growth in Europe. Key points covered include:
- Europe currently has over 8 GW of installed offshore wind capacity, concentrated in the North Sea and Baltic Sea. China is the second largest market.
- Technological advances have allowed for larger turbines, farms, and development of floating and deeper water designs.
- Costs are higher than onshore but continue to decline with technology improvements and larger scale projects. Policy support and financing mechanisms have supported industry growth.
- Outlooks project continued expansion in Europe and growth in new markets like Asia,
This summary outlines the design of the OWTISTM ship, which was developed to reduce costs and improve safety for offshore wind turbine installation. The ship has a 1500t crane, large clear deck space, and can operate in deep water and harsh environments. It was designed with a focus on safety, efficiency and cost-effectiveness. Analysis showed this purpose-built floating vessel providing high safety and capacity at low cost per installed unit would better meet the needs of the growing offshore wind industry compared to converted existing vessels.
John Baross founded Axis Energy Projects Group which has developed a floating tension leg buoy (TLB) solution for offshore wind. The TLB uses a gravity anchor and tensioned tendons to secure a central column, providing stability. Studies by the University of Strathclyde confirmed the design's stability. The design minimizes motion in waves through a flooded central column, reducing costs. Axis Energy is seeking £1 million in investment to complete engineering, hire staff, and plan a demonstration project to advance the technology towards commercialization in emerging offshore floating wind markets.
This document discusses the transition to renewable energy and a circular economy. It makes three key points:
1. Past energy transitions were driven by growth and electricity needs, while today's is driven by decarbonization and reducing fossil fuel dependence.
2. DNV GL's approach to advancing the circular economy involves identifying opportunities, assessing systems and products, developing improvements, and implementing changes. Checklists and workshops are used to screen ambitions and define follow-up projects.
3. Examples of potential circular economy projects are presented, including second-life batteries, electronic waste recycling, composite reuse/recycling, thin-film photovoltaics, polymer automotive cycles, and chemical sector byproduct reuse.
Bnef university solar_wind_bioenergy_geothermal_ccs_energy_smart_technologieMARIANO ORTULAN
The photovoltaic (PV) industry has seen strong growth despite falling prices due to gains in efficiency and reductions in costs across the entire value chain. Installation growth is expected to continue in 2013 with prices stabilizing, although consolidation in the sector will also continue. The wind industry faces overcapacity, pricing pressures, and reduced demand in 2013. Turbine manufacturers may transform their business models to provide energy services and increase service revenue through operations and maintenance contracts in order to improve resilience, optionality, and intelligence.
This document summarizes the key findings and recommendations from a research project on design methods for offshore wind turbines installed at exposed sites. The project involved detailed measurements and analysis of environmental conditions and structural loads on a turbine in the Blyth offshore wind farm. Key findings include: waves in shallow water require non-linear modeling; site-specific wave and wind data should be used; design tools were enhanced and validated; foundation models need to account for soil properties; hydrodynamic loading models were evaluated. Recommendations include: revising certification rules to specify wave modeling and extreme loads; developing standard machinery designs while customizing support structures; accounting for water depth and non-linear waves in design.
3. LCOE Renewables Ranges and Averages [IRENA, 2015]
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
4. LCOE Ranges [Bloomberg NEF, 2013] USD/MWhr
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
5. European Offshore Wind Costs [Carbon Trust, 2015]
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
6. Offshore Wind Cost Trends –
Need for Reductions
• Cost increases since 2005 due to
commodity price rises (mainly
steel) and marine installation costs
• Monopile costs per kW flat-lining
from 1991 to 2008
• Deeper waters, further out to sea:
- heavier and longer over-designed
monopiles & jacket towers
- more extensive and expensive
equipment and vessel spreads
- higher downtime and weather
standby costs
• Insistence on “known technology”
leading to lack of innovation,
conservatism, risk aversion on the
part of developers and lenders.
• Lack of experience in developer
organisations; skills shortage.
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
Source: van der Zwaan et al, 2011
Source: The Offshore Valuation, 2010
7. Building the European Offshore Transnational European Grid
• More predictable energy
output needed
• Connections to more
than one country
• Power trading between
countries
• Viable alternative to
onshore grid construction
• Connection to other
energy sources
• Economical grid
utilisation via shared use
• Greater energy security
• Interconnection capacity
means “firmer“ power
• Single European
electricity market
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
8. Offshore Floating Wind – Huge Potential Resource UK Example
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
Source: The Offshore Valuation, 2010.
9. Floating Wind – Huge Potential Offshore Wind Resource
Majority of OW developments have been in the Southern North Sea, a relatively flat shallow water
continental shelf, mainly dense sand, stiff glacial clayey soils & soft sediment filled paleo-valleys.
Not globally representative. Most coastal areas are steep, rocky, with thin (< 5 to 10 m) soil cover.
Piling is costly for fixed or floating structures. Soils insufficient for drag or suction caisson anchoring.
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
Source: Statoil Global Offshore Wind 2014
10. Global Wave Energy Potential – Fugro OMAE 2010
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
11. European Wind-Wave Combined Potential – ORECCA 2011
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
12. Comparison Oil Drilling Semi-Sub Vs Offshore Wind Floater
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
13. The Future: Offshore Floating Wind Leaders
HYWIND Statoil [NO] statoil.com/en/TechnologyInnovation
PELASTAR Glosten [US] pelastar.com
WINDFLOAT Principle Power [PO/US] www.principlepowerinc.com/products/windfloat.html
IDEOL IDEOL Partners [FR] ideol-offshore.com/en
WINFLO DCNS-Alstom [FR] fr.dcnsgroup.com/produit/eoliennes-flottantes/
INFLOW EDF-IFP-Nenuphar [FR] inflow-fp7.eu/floating-vertical-axis-wind-turbine/
GICON GICON-Fraunhofer [DE] gicon-sof.de/en/sof1.html
FUKUSHIMA Mitsubishi-Hitachi [JA] fukushima-forward.jp/english/
DEEPCWIND 30 diverse members [US] composites.umaine.edu/our-research/offshore-wind/deepcwind-consortium/
SANDIA Sandia Labs [US] energy.sandia.gov/energy/renewable-energy/wind-power/offshore-wind
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
Source: Myhr et al, 2014.
14. Floating Wind Platforms – Semi-Sub - Spar - TLP - Taut Buoy
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
15. Vertical Axis Wind Turbines [VAWT]– Pros and Cons
ADVANTAGES
o Omni-directional
- accepts wind from any direction
o Components mounted at sea level
- ease of service & maintenance
- lighter weight composite structures
o Can theoretically use less materials to
capture the same amount of wind
DISADVANTAGES
o Rotors lower at reduced wind speeds
o Centrifugal force over-stresses blades
o Poor self-starting capabilities
o Often requires support at turbine
rotor top
o Rotor needs removing for bearings
replacement
o To date, poorer performance &
reliability than HAWTs
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
16. BLACKBIRD: Storage Base Anchored Uniaxial Hybrid VAWT-WEC TL Buoy
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
BLACKBIRD: Hybrid Floating Offshore Wind Turbine [FOWT] Wave
Energy Convertor [WEC]. Grouping of existing designs & concepts:
Twin bladed Vertical Axis Wind Turbine [VAWT]
VAWT &WEC generators with anti-yaw horizontal rotating bearing
High buoyancy Uniaxial Submerged Tension Leg Buoy [USTLB]
Tubular Linear Magnetic-Geared Interior Permanent Magnet
Generator [LMGIPMG] WEC
Power Take Off [PTO] units integrated into float unit.
Single vertical high capacity damped tether/tendon.
Subsea ball & taper “plug-in” seabed connector
Subsea FRP “green” concrete storage, pumping & electrolysis unit.
Seabed rock Anchored Foundation Template [SAFT]
Export HVDC power line above gas supply pipeline.
17. WEC - Linear PM Generator [LMGIPM]
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
Linear generation offers possibility of direct
conversion of mechanical into electrical energy.
Direct drive PTO simpler than hydraulic systems,
with no intermediate steps between primary
interface & electrical machine.
“The basic concept of a linear generator consists
of a translator with magnets of alternating
polarity directly coupled to a heaving buoy”
Stator contains windings mounted in a relatively
stationary structure connected to a drag plate, a
large inertia, or the sea bed. As the heaving
buoy oscillates, current is induced in the stator”.
Conventional linear permanent magnet
generators (CLPMG) for direct-drive WEC have
experienced drawbacks including low power
density and large system volume.
18. Seabed Anchored Foundation Template [SAFT]
Buoyant float-out hybrid structure concept
Foundation base or mooring point template.
GRP /reinforced concrete base configured to support
tripods, jackets or GBS or:
Pre-installed templates for inclined or vertical
(TLP)taut or slack catenary mooring lines
Steel /concrete edge skirts and suction caissons [SC]
, or helical screws for differing soil types/thicknesses
Tension resistance via pressure grouted rock anchors
installed below upper support casing.
Installed from an ROV operated marinised drilling
unit via vessel launched LARS.
External GRP, concrete or steel mudmats and/or
integral plastic anti-scour frond mats/mattresses.
Configuration has considerable lateral seabed
resistance and tension uplift capacity.
Design preceded by high quality shallow geophysical
investigation of seabed surface and upper layering
Confirmatory “pilot hole soil/rock coring by same
ROV drilling unit used to install the anchors.
Proof-loading of 5-10% to twice working load.
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
www.bladeoffshore.com/our-company/blade-offshore-remote-drilling#gallery[as]/2/
19. Closing Thoughts – Future of Offshore Wind Energy
Aim: Most Efficient Abstraction of Kinetic Energy From Moving
Turbulent Air [OFFSHORE WIND]
How Would That Be Done in 2016 From A Standing Start? Fixed
Structure Top Heavy 3 Bladed Onshore HAWT on Fixed Steel Towers?
>> No!! Too Expensive and Subsidy Dependent
What Will The Global Mix Be Between Fixed Vs Floating?
>> Deeper Waters/Sloping Seabeds >> FLOATING VAWT
Will There be a Real Offshore Wind “Gamechanger” - or not? Yes
there must be soon.
>> [$$$ ECONOMICS $$$]
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
20. References & Links
References
Borg, M., Collu, M. and Brennan, F.: Use of a Wave Energy Converter as a Motion Suppress Device for Floating Wind
Turbines, Energy Procedia 35 (2013) 223 – 233, DeepWind 2013, 24-25 January, Trondheim, Norway, 2013.
Carbon Trust: Innovation in Offshore Wind: International Collaboration and Coordination”, All Energy 2015,
Glasgow, UK, p. 32, 2015.
DNV-KEMA: The Crown Estate – UK Market Potential and Technology Assessment for Floating Offshore Wind Power;
An Assessment of the Commercialisation Potential of the Floating Offshore Wind Industry, Rev. 01, 21st December
2012, Ref. 2012-1808, p.24, 2012.
Golightly, C.R.: Efficient Anchored Template Foundations for Offshore Wind Turbines [OWT], EWEA 2013
Myhr, A. and Nygard, T.A.: Experimental Results for Tension-Leg-Buoy Offshore Wind Turbine Platforms, Journal of
Ocean and Wind Energy, ISOPE, 1, 4, November 2014, pp. 217–224, 2014.
Paulsen, U.S., Borg, M., Madsen, H. A., T.F. Pedersen, Hattel, J., Ritchie, E., Ferreira C.S., Svendsen H., Berthelsen P.
A., Smadja, C.: Outcomes of the DeepWind Conceptual Design”, Energy Procedia 80, pp. 329 – 341, 2015.
SI Ocean: Wave and Tidal Energy Strategic Technology Agenda, February 2014, p. 44, 2014
Slocum, A. H., Fennell, G.E. and Dundar, G.: Ocean Renewable Energy Storage (ORES) System: Analysis of an
Undersea Energy Storage Concept, Proc. IEEE, 101(4): pp. 906–924, 2011.
White, C.N., Erb, P.R. and Botros, F.R.: The Single-Leg Tension-Leg Platform: A Cost-Effective Evolution of the TLP
Concept”, Proc. 20th Offshore Technology Conference, Houston, Texas, 2nd -5th May 1988, Vol. 1, p.8, 1988.
Links
Global Wind Energy Council Country & Global Reports [www.gwec.net/publications/country-reports
ORECCA: European Offshore Renewable Energy Roadmap, p. 101, 2011.
IRENA Costs Database [irena.org/costs]
USA Offshore Wind Database [offshorewind.net]
4C Offshore Wind Database [4coffshore.com]
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016
21. Contact Details
Dr. C.R. Golightly, BSc, MSc, PhD, MICE, FGS.
Geotechnical and Engineering Geology Consultant
Rue Marc Brison 10G, 1300 Limal, Belgium
Tel. +32 10 41 95 25
Mobile: +44 755 4612888
Email: chris.golightly@hotmail.com
skype: chrisgolightly;
Linked In: www.linkedin.com/pub/5/4b5/469
“You Pay for a Site Investigation -
Whether You do One or Not”– Cole
et al, 1991.
“Ignore The Geology at Your Peril” –
Prof. John Burland, Imperial College.
Dr. C. R. Golightly GO-ELS Ltd. – BLACKBIRD: Euromech VAWT 2016 – TU Delft - 9th September 2016