High priority is given to innovative
techniques and quality. Worldwide, WOLTER customers rely
on the experience and knowledge of the well-trained staff
that guarantees a prompt and careful execution of all demands
and orders.
WOLTER products are manufactured and checked according to
the latest developments in technology and the worldwide
accepted standards like AMCA, BS 848, ISO 9001, DIN 24163
and PIARC 1995.
Suitable for smoke spill
application 400°C / 2h
AXV fans: Sizes 315 to 1600, cast aluminium blades
| Axial Flow
Fans |
 |
Suitable
for smoke spill application 400°C / 2h |
|
|
AXV fans:Sizes 315 to 1600,
cast aluminium blades |
|
BXV fans with light aluminium
or plastic blades |
|
Air volumes from 1.000 to
150.000 m³ / h |
|
Static pressures up to 1.500
Pa, higher pressures are possible with multi-stage
fans |
|
Casing available in long
or short version |
|
AEQ/ADQ fans
with plate mounted casing, AER/ADR fans with short
case for installation in tube systems |
|
Jet Fans
the combination of CO-ventilation
and smoke exhaust in car parks.
Principle
In recent years jet fan technology has established itself
as the new standard in car park ventilation in the United
Kingdom and is quickly gaining acceptance in other countries
all over the world.
As opposed to conventional ventilation concepts
based on transverse ventilation and ducted systems, the
jet fan technology is derived from the longitudinal ventilation
systems found in most road tunnels.
Here, a stream of air is injected into the tunnel by a series
of free-blowing silenced axial fans, thus inducing an air
movment in addition to the natural ventilation. The decisive
parameters of capacity are the air volume and velocity and
therefore the thrust of the fan.
Advantages
By installing an adequate number of jet fans in an enclosed
car¬park, a constant air-movement can be created ensuring
that the CO concentration all over the car park is maintained
in line with building regulations.
By a well-designed system of jet fans the accumulation of
exhaust fumes in dead areas can be avoided. The costly installation
of ductwork becomes obsolete and the required total capacity
of fans can be reduced as pressure drops created by the
ducting are avoided.
If required, WOLTER jet fans can be produced in a high-temperature
configuration that will ensure operation at both ambient
temperature for CO-ventilation and elevated temperature
of 300°C for at least one hour.
By utilising fully reversible impeller technology, the thrust
direction of each individual fan can be controlled to contain
smoke within the affected area and direct it to the nearest
exhaust point. This helps to keep emergency exits free of
smoke and prevents smoke from contaminating non-affected
areas of the car park.
The virtual fire compartments created by jet fans allow
for more open-plan design of the car parks.
The use of jet fans achieves comparable, if not superior,
ventilation results than conventional systems and can offer
substantial advantages.
The additional capital cost of the jet fan system is outweighed
by potential savings over the traditional ducted system.
The fan-motor-unit can be extracted from the attenuator
for servicing.
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