In
terms of "Blade
Geometry", the Mariah Turbine
has a total of 628 square feet
of surface area, within a defined
space of 20 feet (wide) x 10
feet (high). In terms of Man
hours to build; we believe
it should take 200 man hrs
to build and complete (± 10%).
In terms of "Costs"; we believe
the Mariah 1 MW Turbine with
all goods incorporated and
attached to the unit can be
competed for $ 25,000.00 Dollars
(± 15%). We predict
the "Life Expectancy" to be < than
50 years. Compared to:
A
1 MW HAWT unit requires a "Swept Area" of
approximately 31,000 square
feet. Combining the three blades
(normally associated with this
technology), we can safely
say the Blade Geometry is approximately
132 square feet. A typical
3-blade HAWT rated @ 750 KW
requires 1,500 – 2,000 man
hrs to build the rotors. Each
rotor must be able to:
Adjust
(feather) as wind velocity
increases or decreases. This
feature requires sophisticated
controls (sensing, and mechanical
gears) to allow each blade
to change its angle of attack.
This infrastructure alone
represents a cost greater
than the total sum of the Mariah
Turbine. HAWT blades require
regular high tech maintenance
protocols and are subject to
severe damage in high velocity
winds. Maximum life expectancy
is rated @ > 30 years.
Summary :
Appreciable savings (20:1 ratio – VAWT:HAWT), reliability,
man hours to build, strength, and longevity are some
of the many reasons why the Mariah Turbine (VAWT)
is significantly superior to HAWT technology.
