The principal assumption of the Betz model (for calculating of the best free flow turbine efficiency) was that the fluid flow remains rectilinear when passing through the turbine and maintains a uniform distribution of the fluid pressure on the turbine. In reality, the fluid streams are deflected from the rectilinear direction near the barrier. By taking account of the curvilinear trajectories for the streams and flow redirecting, one obtains a more correct turbine power and efficiency limit. In addition – if incoming flow is using not only one time but twice - Betz efficiency of 59% is not a limit. Jet blades and respective turbine is using the energy of incoming flow at least two times. That is why the theoretical efficiency is as high as above 80%. In reality the efficiency of well designed JET rotors is possible to increase up to 2 times in comparison with non-JET blade turbines.

Based on new invented ROTOJET fluid kinetic energy converters are developing number of wind JET rotor designs. Each of them is full scalable. JET rotor/blades concept require new line of airfoil 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. Thanks to the additional JET mode of blade rotations new designed turbines can increase the turbine efficiency many times (see videos at www.b2b.bg/new.html )

The new invented Wind-PV synergy energy system exploits a passive ground based PV-modules supporting structure as an wind accelerator directed accelerated  wind to the swept area of the wind turbine JET blades. This invention is applicable as an upgrade of the turbines operating in Wind Farms, as well. The hybrid systems, generally, is better energy source from energy-system point of view. Another invention related to low cost energy storage system is applicable to all renewable power plants.

Wind-PV synergy energy system is easy applicable even together with existing renewable energy facilities/plants/farms. E.g. - Wind-PV synergy energy system is useful for any wind turbine and any manufacturer can incorporate PV-supporting ground structure around vertical mast of his horizontal axis wind turbine. In low wind speed areas is possible to increase wind turbine energy yield above 50%.

A new patented HAWT with JET blades see at: www.youtube.com/watch#!v=OwkLKdPuJAY&feature=channel

You can see a video of the Wind/Solar PV park with two axes tacking system with flat reflectors at: www.youtube.com/watch#!v=9S4R_U7RExY&feature=channel 

New invented 3 axes tacking system in operation you can see at: www.youtube.com/watch#!v=zA1JMB6bH3Q&feature=channel

For some applications of ROTOJET power system is possible JET rotor upgrade / retrofit of the conventional rotors.

By new invented JET wind turbines is quite possible to double turbine power output of both axial and cross flow turbines (with same rotor diameters) at low wind velocity. Also is possible to reduce turbine spacing in Wind Farms and to guarantee the same overall energy yield as by non JET wind machines. See a comparison in operation of JET turbine vs. conventional turbine at: http://www.youtube.com/watch?v=ghp-7MqUyhs  

Натиснете, който и да е линк в долната таблица, за да видите видеоклипове на съответните патентовани (БГ патенти)  реактивни турбини:

See the related videos of patented (BG patents) JET augmented turbines by clicking of each link in the table above. Take an overlook of the description of each video.

See at  www.youtube.com/watch#!v=-PX0wGi3Oag&feature=channel Wind-Hydro Kinetic Tidal/River/Canal Power Barge with Vertical Axis JET Mono- directional Rotating Turbines in Omnidirectional Water/Wind Flow. Wind/Hydro-kinetic power plant with JET blades on vertical shafts (cross flow turbines)based on a floating anchored pontoon structure. Patented JET turbines formed by hollow blades with elliptic-like cross-section. The blades with side inlet aperture and outlet nozzles at blade trailing edge. It is a radical new patented blade design (ROTOJET) that increases flow-to-power efficiency significantly and helps to increase turbine performance at low and moderate flow speeds and in turbulent flow as well. Easy starting turbines. Patent pending. Integrated oil less power train with a common electric alternator.

First ever ROTOJET. Jet / Lift / Drag turbine is the most economical feasible solution of dam less hydropower. And for wind applications as well. The ROTOJET design is very low cost in both manufacturing and operation. See below a basic comparison of different types of wind/hydrokinetic turbines:

See the related demo video by clicking of each blue link in the table above. Take an overlook of the description of each video.

See a new patented JET augmented vertical axis cross flow JET - Drag turbine of Savonius type at www.youtube.com/watch?v=zMhw5cAk9Ps&feature=channel.

See a new patented  JET - Lift - Drag  Transverse Horizontal Axis Water Turbine (THAWT) at: www.youtube.com/watch?v=I_tc5E8bAb4

See a Test Measurements of a JET-Lift  Blade Axial Flow Turbine in Operation at www.youtube.com/watch?v=-0QMqvg3rFw

Всеки линк в долната таблица пряко води до видеоклипове за патентовани хибридни електроцентрали по съответната тема:

See the related video of patented (BG patents) eco-cars by clicking of each link in the table above. Take an overlook of the description of each video.

Натиснете, който и да е линк в долната таблица, за да видите видео на патентована слънчева система по БГ патенти по съответата тема:

See the related video of patented (BG patents) advanced Solar PV system by clicking of each link in the table above. Take an overlook of the description of each video.

See more at http://www.tonchev.org

Download Patent's Brochures:

Automotive and Solar PV Patents

Wind and Hydro-Kinetic JET Turbines

Patented Intelligent PLUS Energy Buildings

Automated System for Building Air-conditioning and Electric Supply