Wind Turbine Tower

The patented system uses a multiple axis design utilizing wind from every direction. It is made to capture wind in high and medium ranges with a turbo feature. The Tower has a lower price point, is easier to maintain for a lowered operating cost. By comparison the horizontal axis (windmill) design has a much higher operating cost due to the cyclical stress on the single axis. The windmill product must be placed high above ground to avoid turbulence which makes servicing the windmill difficult and in some location endangers migratory birds.

Our multi axis design is lower, modular and more scalable which is reflected in the lowered cost for repairs. Shipping costs are more reasonable as the size of the parts are smaller. The design is extremely quiet; the blades are stiffer with a higher efficiency and will start at lower wind speeds. All high maintenance components are placed on ground level to insure availibility for repair. This design is the next generation of the old vertical turbines and includes a turbo feature for greater wind speeds. WIND RATING TO 120 MPH

Wind Power Technologies Comparison

Item	Horizontal (Airplane propeller type) (HAWT)	Old Vertical Turbines (VAWT)	New Multi Axis Turbo System Design (MAT)
Description	Over 95% of wind turbines currently in use	Various designs; largely experimental	Utilizes the positive technological aspects of both horizontal (HAWT) and vertical (VAWT)
Definition	HAWT (Horizontal axis wind turbine)	VAWT (Vertical axis wind turbine)	MAT (Multi axis Turbo system)
Cost per kWh in 16 MPH (ave) wind	4.5 to 5 cents per kWh	7 cents per kWh	Less than 4.5 cents per kWh
Advantages	• No cyclical stress unlike vertical axis. • Ability to place high above the ground to avoid turbulence.	• Components on ground level for simplified installation and easier maintenance.	• Manufacturing backlog avoided through limited use of custom made components. • 35% to 60% less expensive per kWh than HAWT or VAWT depending on local labor cost and local access to components. • Smaller blades use a fraction of the material per rated kilowatt. • Modular and scalable. • Inexpensive to repair, high maintenance components such as gearboxes and generators are at ground level , isolated from problem causing vibrations. This dramatically reduces premature failure. • Use of local vendors and workforce. • Reduced stress on bearings. • Extremely quiet-no noise. • NO Bird Kill. • Stiffer blades and higher efficiency (cannot have both with vertical axis turbines). • Easy start in lower wind speed. • Ability to place high above the ground to avoid turbulence. • Component failures are isolated, preventing a complete shutdown of a MAT. • Lower capital expenditures and maintenance costs enables profitability at twenty times more locations than HAWTs and VAWTs also at lower cost.
Disadvantages	• Blades on top of tower, difficult to maintain and repair. • Expensive to manufacture. • Expensive to repair- all components on top of tower. • Extreme stress on bearings. • Avian mortality issues. • Long periods of downtime for repairs; necessitates the use of a crane.	• Blades have problematic cyclical stress unlike horizontal. • More stress on bearings than horizontal. • Lower efficiency per swept area. • Higher efficient version is: A) difficult to start, B)more prone to shaft problem with larger blades. • Difficult to mount on higher tower. • Bearing replacement requires tower to be taken down. • Control difficulties.	• Takes more swept blade area to produce same amount of power as horizontal turbine (Moot point due to lower blade cost per kilowatt/hour produced). • Possible perceived aesthetics issues.

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