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Date: 12.08.10
Title: Get Twice The Cooling For Wind Power Generators
With Rosenberg’s Double Inlet Centrifugal Fans |
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CHARLOTTE, NC – Rosenberg’s double-inlet forward-curved radial
centrifugal AC fans deliver up to 7,200 CFM of air movement in critical
cooling and ventilation applications such as wind power generation,
clean rooms, commercial kitchens, food processing and railway air
conditioning.
Designated the DRAE and
DRAD series, they are often used for cooling generators and switchboards
in modern wind energy plants and windmills. Rosenberg is the world’s
leading supplier of cooling fans to the wind power industry.
These fans are available in sizes from 7 inches to 15.7
inches (180 mm to 400 mm). The size designation corresponds to the
outside diameter of the drum impeller. The impeller is made of
galvanized sheet steel.
The impeller is
mounted directly to the rotor of the external rotor motor, which is 100%
speed controllable, so noise and vibrations can be kept as low as
possible. The impeller is balanced dynamically at two levels with the
rotor according to quality level G2.5 to DIN1940. The casing is also
made of galvanized steel.
These rugged,
high-efficiency centrifugal fans comply with R20 standards. The outlet
flange is in compliance with DIN323.
The asynchronous motors are protected by thermal contacts. Insulation is
Class F. Protection is to IP54. The fans are also available featuring
Electronically Commutated (EC) motor technology. The largest single
inlet EC model (22 inches/560mm) delivers up to 7,600 CFM of air
movement.
Rosenberg fans have been used
in demanding applications around the globe since 1981 and are built to
handle a wide range of requirements. In addition to standard products,
Rosenberg’s engineering and manufacturing specialists offer application
assistance and work directly with customers to provide customized
solutions to their air movement problems. They are skilled at producing
fans that match customers’ unique needs such as special finishes,
voltages, or frequencies.
The Rosenberg
family of companies employs more than 1,200 individuals worldwide.
Rosenberg USA is headquartered just outside Charlotte in Indian Trail,
N.C. For more information, or to place an order, contact Rosenberg USA
by phone at (704) 893-0883; fax (704) 882-0755 or e-mail
sales@rosenbergusa.com.
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