Cross Flow Vertical Axis Under Water JET Turbine

Cross Flow Vertical Axis Under Water Turbine
The JET rotors (propeller) are about two
and more times more efficient in comparison to the conventional
rotors.
Based on new invented ROTOJET fluid kinetic energy converters we are
developing number of wind and hydro kinetic JET rotor designs for
river/canal/tidal applications. Each of them is full scalable.

JET rotor/blades concept require new line of airfoil / hydrofoil
cross section, new plan form, new pitch and twist designs, new hub
etc. In addition we have developed complete new ROTOJET power system
"flow - blade - rotor - drive train - electric generator - power
controller/inverter" . ROTOJET power system design is easy tailored to
the specific flow conditions (velocity, turbulence etc.) to achieve
much better system capacity factor.

Our aim is to manufacture basic elements of a hydro-kinetic power farm
near to (on) site. It is possible after transfer of respective know-how.

Based of our CFD and in water tests we found that the power that can
be extracted by a free flow JET turbine is significantly higher than
the "Betz limit" which restricts the total extractable power for an
unconfined turbine such as a wind turbine. The Betz analysis is widely
applied to the free flow water streams, but it underestimates the power.

A very important feature of free flow river/canal power is that at
present there are still considerable uncertainties to be resolved over
assessment of how much power can be realistically extracted at a given
site. Our team working at every scale from a single device, through
farms of multiple devices, to understand and optimize turbine
performance and ultimate energy yield from a given free flow stream.

Localized interactions between devices are of great importance in
determining the collective energy yield of a system of turbines
(hydro-kinetic parks), as wake effects can significantly reduce total
energy yield. We are developing vortex wake modeling techniques to
simulate and investigate turbine interaction effects. The results show
that the turbine efficiency is affecting on both speeds crossing
turbine flow speed and around turbine flow water speed. Patent
pending. See more at http://www.tonchev.org

Category:

Science & Technology

Tags:

• JET
• Savonius
• Tvertical
• Axis
• Under
• Water
• Turbine
• ROTOJET
• patented
• high
• efficiency
• VAWT
• tidal
• river
• canal