George Tonchev
New
Technologies of Free Stream / Tidal / River / Wave Power PlantsVideos of Hydrokinetic JET Turbines see here !!!
Videos of JET WIND TURBINES see here !!!
Videos of Patented Technologies of Wave Power Plants See here !!!
Hydrokinetic power refers to the generation of electricity from moving water without impoundments or diversionary structures that are typically used at conventional hydropower facilities. New invented technology operates in open rivers, channels, tidal areas and oceans. It is a new high efficient standard of conversions of water kinetic energy to usable power thank to number of patented radical new technical solutions based on JET augmented turbine rotors. The invented JET hydrokinetic power plants designs include both horizontal and vertical JET turbines. It is basically surface-suspended systems, is also deployable downstream from existing hydropower facilities, which allows for new, environmentally- friendly power generation within the existing project footprint.
High efficient JET BLADE of innovative under water marine free stream turbines operating in omni-directional flows
Hydrokinetic power makes use of swiftly flowing rivers or tides to turn windmill-like turbines, which in turn generate electricity. Hydrokinetic power is distinct from traditional hydro power in that dam construction is not required. Typically, a hydrokinetic turbine is submerged and secured to the riverbed, or is attached to existing infrastructure, such as bridge pilings or pontoons.
The main advantage of the
invented hollow hydrofoil blade is a special design that
exploits three types of rotational forces:
1. Hydro jet forces
2. Hydrodynamic lift
3. Helpful drag forces
The blade is a unique blade worldwide. In the hollow blade part (by rotating) the centrifugal force is constantly transforming the water under pressure inside hollow blade to jet streams behind the blade that creating rotational jet torque. At low water speed the rotational jet torque is creating by flow redirection in the hollow blade. Because of the invented blade all jet blade turbines increased both blade velocity and efficiency. High blade performance is achieved by significantly reducing of no helpful blade drag forces, (especially inductive loses) and enhancing helpful drag and by improving of the blade hydrodynamic lift. The jet blade allowing the turbine to be scaled independently in horizontally or vertically to fit to existing environment. The jet blade turbines have very good performance at low flow velocity. See a scheme of a hydro power plant with over water drive power train coupled to the vertical shafts of the under water counter rotating Jet Darrieus turbines.
For river and sea currents/tidal are developed number of moving water energy converters as low/ zero head stream turbine - see 4 videos: under water hydrokinetic plant , zero head water stream jet turbine , axial flow inclined axis river/tidal turbine and under water hydrokinetic 3 stage turbine with over water power train. See an animation of Two Stage Open Center Hydrokinetic Turbine. A video of a scaled model of Jet Water Wheel see here
See a video of a JET Propeller / Impeller Two Stage Axial Flow Turbine here
The jet blade turbines operate efficiently in both medium water and and air. A prototype in operation of a wind jet blade turbine
see at the video here. The jet blade water turbine prototype is testing - see a video here . See animation of a hydrokinetic marine/river plant with a new invented jet blade turbine See animations of several types of new invented under water turbines with straight and helical twisted jet blades For river/sea stream applications is a good combination from hydrokinetic turbines and wind turbines over the common supporting structure and common drive system based on a hydrostatic transmition. As example of an innovative wind turbine with S-ROTOR see video here S-ROTOR turbine is a drag / jet / lift machine. S-ROTOR turbine is constructed with two jet blade channels in the periphery of each blade. Power augmentation is up to 2 times for non-ducted applications. Low noise / high torque machine. Self start at low wind velocity. Very good performance at high turbulent winds and as a group of close spaced vertical axis jet wind turbine with a common drive train. Self braking effect at high wind speed. See a video of a Pontoon 3 Propeller Rotor Hydrokinetic TurbineBuilding the dam of conventional hydropower plants using high head turbines is very expensive and a large area of land is flooded – which have big ecological impacts on local wildlife. The invented thydrokinetic urbine for low velocity water flow enable mankind to tap into thousand, thousand kilometers of river the forgotten renewable energy source, to be placed where it needed, voiding the high cost of transmission loss. After generating power; the new jet blade turbine will lowering the speed of the free water stream to reduce the river bank and soil erosion problems.
The jet blade turbine is a uni-rotational machine in omni-directional flow that is applicable as a prime energy converter in the tides and wave power plants.
Wave energy is the capacity of the waves for doing work. Ocean waves are generated by the influence of the wind on the ocean surface first causing ripples. As the wind continues to blow, the ripples become chop, fully developed seas and finally swells. In deep water, the energy in waves can travel for thousands of miles until that energy is finally dissipated on distant shores. The best wave energy converters directly extract both kinetic and potential wave energy that we call 3D power converters. Several advanced patent pending 3D power converters have been developed.
Tidal in stream energy occurs due to the moving mass of water with speed and direction as caused by the gravitational forces of the sun and the moon, and centrifugal and inertial forces on the earth's waters. Due to its proximity to the earth, the moon exerts roughly twice the tide raising force of the sun. The gravitational forces of the sun and moon and the centrifugal/inertial forces caused by the rotation of the earth around the center of mass of the earth-moon system create two "bulges" in the earth's oceans: one closest to the moon, and the other on the opposite side of the globe. The best tidal flow converters efficient convert both low and high velocity stream energy that we call Rotojet turbines. Several advanced patent pending Rotojet turbine systems have been developed. More see at www.tonchev.org/wavetidalpower.html
Tides and marine currents are predictable and they can be used as a dependable base line supply. Water currents are analogous to air currents. Because water is so much more dense than air, a 22 х 17 m (370 m2 swept area) vertical axis Jet Blade Marine Turbine operating at current velocity of 3 m/s could produce similar rated power as a 60 m diameter (2 800 m2 swept area) horizontal axis wind turbine operating at 15 m/s (e.g. ~ 1 MW). Such marine turbines are anticipated to be installed at depths of 30 – 40 m. The jet blade hydrokinetic turbine design allows to reduce significantly the cost of electricity generated at the level as low as the utility grid prices at present. There are a large number of tidal sites in the world's oceans which can provide a significant, viable and cost effective source of reliable energy. Many are strategically located close to populated areas where they can be economically harnessed using an ecologically benign zero- and low-head technologies developed by presented jet blade including jet blade turbine applications in natural and artificial vortices.
An other types of submersible or semi-submersible turbine is axial flow hydrokinetic turbine - see a video here.
Invented jet blades are applicable to wind turbines, as well. A short presentation of Darrieus wind turbines with new invented jet blades see here.
A novel double JET blade VAWT - TV/TAJT
Double JET means every blade is designed with two tangential jet channels that
formed accelerated JET streams. Every stream creates a tangential rotational JET
force/torque. Thanks to that power output of TV/TAJT is increased up to two
times. The invented turbine operates efficiently in very broad range of flow
velocities. That is why the invented (patent pending) double JET blade turbine
operate with very high capacity factor.
My team have designed, built and tested lab scale versions of a vertical axis turbine that is mechanically much simpler than axial flow wind devices, applicable in omnidirectional flow. Also, the double JET blade TV/TAJT (Tidal Vertical/Transversal Axis JET Turbine) has been designed to intersect the largest possible area of current, and has resulted in a device that can be scaled regardless of the depth of water in which it is situated. The result is that if TV/TAJT devices were extended across the same area as axial flow devices.
TV/TAJT would require:
less generators,
less primary seals
less foundations
And consequently TV/TAJT would incur:
lower capital costs
lower maintenance costs
lower operational costs
A short presentation of the new invented vortex hydro power plant and under water power plant with jet self augmented Savonius turbines see here
Number of JET augmented hybrid vertical axis hydrokinetic turbines ( fixed to a common shaft Savonius JET scoops and straight JET blades) are developing. The performance coefficient of self JET augmented turbine is increased up to 2.5 times in the comparison to the conventional blade turbines.
Vertical axis 3 jet blade under water hydrokinetic turbine
Videos of the newest patents see here
Георги Тончев
Inventions & Technologies of Renewable Energy
39A, Jerusalem Street. Sofia, BG - 1784, Е-mail: George Tonchev
Voice / Fax: +3592 8760 431, +3592 8770 481, +3598 9787 2857, +359 888 40 39 13,
София, Тел.: 02 8760 431, 02 8770 481, 0897 872 857, 0888 40 39 13, Е-mail: George Tonchev
Author and inventor: © George Tonchev
For patent publications see here
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