Ocean Current Energy Resource Assessment for the Gulf Stream System: The Florida Current

2017 ◽  
pp. 217-236 ◽  
Author(s):  
Kevin Haas ◽  
Xiufeng Yang ◽  
Vincent Neary ◽  
Budi Gunawan
Keyword(s):  
Gulf Stream ◽  
Energy Resource ◽  
Resource Assessment ◽  
Ocean Current ◽  
Florida Current ◽  
Stream System ◽  
Current Energy ◽  
Ocean Current Energy

Theoretical Assessment of Ocean Current Energy Potential for the Gulf Stream System

2013 ◽  
Vol 47 (4) ◽  
pp. 101-112 ◽  
Author(s):  
Xiufeng Yang ◽  
Kevin A. Haas ◽  
Hermann M. Fritz
Keyword(s):  
Energy Dissipation ◽  
Gulf Stream ◽  
Surface Wind ◽  
Ocean Current ◽  
Circulation System ◽  
Western Boundary ◽  
Energy Potential ◽  
Stream System ◽  
Current Energy ◽  
Ocean Current Energy

AbstractThe Gulf Stream system features some of the fastest and most persistent currents in the Atlantic Ocean and has long been identified as a promising target for renewable ocean current energy. This study investigates the theoretical energy potential of ocean currents for the Gulf Stream system. A simplified analytical model is calibrated and utilized to represent the quasi-geostrophic balance in the North Atlantic subtropical circulation. The effect of turbines is included in the model as additional turbine drag force. The energy equation in the system is derived and analyzed both locally and basin-wide. Basin-wide, energy production from surface wind stress is balanced by energy dissipation from natural friction and turbines. However, the pressure gradient is playing an important role in redistributing the energy in the local energy balance. It is found that increasing turbine drag does not necessarily increase total energy dissipation from turbines. The maximum energy dissipation by turbines is estimated to be approximately 44 GW, although electrical power output will be significantly reduced due to various engineering and technological constraints. The turbine drag has significant impact on the circulation system. The reduction of energy and volume fluxes in the circulation is featured for different levels of turbine drag. It is found that residual energy flux along the western boundary can be significantly reduced under the peak energy dissipation by turbines, while reduction of volume flux is less extreme.

scholarly journals PENELITIAN POTENSI ENERGI ARUS LAUT SEBAGAI SUMBER ENERGI BARU TERBARUKAN DI PERAIRAN TOYAPAKEH NUSA PENIDA BALI

2016 ◽  
Vol 8 (3) ◽  
pp. 139 ◽  
Author(s):  
Ai Yuningsih ◽  
Ahmad Masduki
Keyword(s):  
Local Community ◽  
Meteorological Parameter ◽  
Energy Resource ◽  
Ocean Current ◽  
Energy Potential ◽  
Community Based ◽  
Coastal Morphology ◽  
Average Current ◽  
Current Energy ◽  
Ocean Current Energy

Metode penelitian potensi energi arus yang diterapkan adalah pengukuran arus, pengamatan pasang surut, pengamatan parameter meteorologi dan kondisi morfologi pesisir dan dasar laut daerah penelitian. Hasil penelitian menunjukkan bahwa lokasi penempatan turbin arus laut cukup memenuhi syarat dengan morfologi relatif landai pada kedalaman ± 20 meter dan dekat dari pemukiman penduduk. Kecepatan arus rata-rata di perairan Toyapakeh mencapai kecepatan 2,5 – 3,0 m/detik dengan durasi 9 – 18 jam/hari untuk kecepatan diatas 0,5 m/detik. Dengan demikian, perairan di Toyapakeh merupakan lokasi yang cukup potensial untuk dimanfaatkan sebagai sumber energi baru terbarukan, khususnya pembangkit Listrik Tenaga Arus Laut (PLTAL). Kata Kunci : energi arus laut, turbin arus laut, energi baru terbarukan, Selat Toyapakeh The methods of current energy potential study are current measurements, tidal and meteorological parameter observations, condition of coastal morphology and seafloor of the study area. The results show that, the location for turbine position is in area with relatively gentle slope morphology at a 20 meters water depth and it is close to local community. Based on the analysis of flow water conditions at Toyapakeh Strait, the average current velocity is about 2,5m/s to 3,0 m/s and within 24 hours, the flow velocity is greater than 0.5 m/s occurs for approximately 9 to 18 hours. Therefore, the results of the ocean current energy analysis indicate that the study area is very potential for using reneawable energy resource as a power plant location. Keywords: ocean currents energy, Sea Current Turbin, renewable energy, Toyapakeh Strait.

Hydrokinetic Energy Resource Assessment of the Gulf Stream Near Cape Hatteras, North Carolina

2014 ◽  
Author(s):  
Asif Kabir ◽  
Ivan J. Lemongo ◽  
Arturo Fernandez
Keyword(s):  
North Carolina ◽  
Gulf Stream ◽  
Energy Resource ◽  
Resource Assessment ◽  
Ocean Model ◽  
Likelihood Method ◽  
Ocean Current ◽  
Hydrokinetic Energy ◽  
Cape Hatteras ◽  
Promising Source

The Gulf Stream near the coasts of North Carolina is considered a promising source of hydrokinetic energy. A statistical analysis is conducted to assess the energy available for extraction in this region. Weibull distribution is used as the Probability Density Function (PDF) for this purpose. The ocean current velocity data are collected from the ‘HYbrid Coordinate Ocean Model (HYCOM)’. The data are collected at a depth of 20 m from the sea surface which is considered a good position for energy extraction. The Weibull parameters from the analysis are calculated using the maximum likelihood method. The direction of the ocean current was found to be mostly uniform in this region. The theoretical power density of this region was estimated to be more than 275 W/m2 around 70% of the time and exceeded 2000 W/m2 around 10% of the time.

scholarly journals Tidal current energy resource assessment in Ireland: Current status and future update

2010 ◽  
Vol 14 (9) ◽  
pp. 3206-3212 ◽  
Author(s):  
Fergal O’Rourke ◽  
Fergal Boyle ◽  
Anthony Reynolds
Keyword(s):  
Tidal Current ◽  
Energy Resource ◽  
Resource Assessment ◽  
Current Status ◽  
Tidal Current Energy ◽  
Current Energy

scholarly journals Compact Low-Velocity Ocean Current Energy Harvester Using Magnetic Couplings for Long-Term Scientific Seafloor Observation

2020 ◽  
Vol 8 (6) ◽  
pp. 410
Author(s):  
Longxiang Huang ◽  
Feng Lyu
Keyword(s):  
Energy Harvester ◽  
Optimal Parameter ◽  
Ocean Current ◽  
Low Velocity ◽  
3D Fem ◽  
Seafloor Observation ◽  
Magnetic Couplings ◽  
Current Energy ◽  
Ocean Current Energy

A compact low-velocity ocean current energy harvester (LOCH) is developed to power undersea instrument platforms for long-term scientific seafloor observation. Noncontact magnetic couplings are used in the LOCH to eliminate friction and achieve reliable underwater sealing so that the LOCH can adapt the low-velocity ocean current and its energy transmission efficiency can be improved. The parameters of the magnetic couplings are optimized by the three-dimensional finite-element method (3D FEM). A laboratory experiment platform is designed; and the static and dynamic performances of the magnetic couplings with different parameters are tested. The experiment results are compared with computer simulations to verify the optimal parameter design. Finally; a prototype of the LOCH is designed and its underwater experiment proves that it can start smoothly and work stably at a current velocity of as low as 0.4 m/s

Ocean Current Energy Conversion

2016 ◽  
pp. 1147-1162
Author(s):  
Howard P. Hanson ◽  
James H. VanZwieten ◽  
Gabriel M. Alsenas
Keyword(s):  
Energy Conversion ◽  
Ocean Current ◽  
Current Energy ◽  
Ocean Current Energy

scholarly journals Study on Key Design Technology of Energy Capture for Ocean Current Energy Generator Unit

2018 ◽  
Vol 170 ◽  
pp. 042067
Author(s):  
Jingchun Chu ◽  
Ling Yuan ◽  
Fayong Jia ◽  
Ting Wang ◽  
Lei Pan ◽  
...  
Keyword(s):  
Ocean Current ◽  
Design Technology ◽  
Energy Capture ◽  
Generator Unit ◽  
Current Energy ◽  
Ocean Current Energy

Solution of Energy Supply for Deep Ocean Installations: Design and Testing of a Micro-Fluid Turbine

2014 ◽  
Vol 472 ◽  
pp. 247-253
Author(s):  
Ying Yuan Tian ◽  
Yun Hai Zhang ◽  
Xu Jun Wang
Keyword(s):  
Deep Sea ◽  
High Efficiency ◽  
Mechanical Energy ◽  
Deep Ocean ◽  
Ocean Current ◽  
Test Results ◽  
Contact Transmission ◽  
Design And Testing ◽  
Current Energy ◽  
Ocean Current Energy

A micro-fluid turbine has been successfully tested in the laboratory and towing tank. This 2m diametral device is designed to operate in flows with velocity from 0.1m/s to 1m/s. The designed output power varies from 0.3W to 200W. In this design, the low density ocean current energy in deep-sea stored as mechanical energy in plane roll-up spring first. When the spring has enough potential energy, it drives the generator to generate electricity. Through this assistant start approach, the turbine can work in ultra-low-speed current. On the other hand, the non-contact transmission remarkably reduced the drag torque of hubcap. Besides these approaches, some other advanced technologies, such as self-adaptive platform, high efficiency energy storage, and intelligent control, are applied in this turbine. Test results show that the micro-fluid turbine has potential to provide power for instruments and equipment in deep-sea environment.

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