construction and cabling costs.
MoJets have been installed in the
Grimstad Port Tunnel in Norway. The
fans will ventilate the tunnel to dilute CO
and NO2 emissions, as well as control the
direction of smoke in case of fire. Some of
the pre-existing jet fans had been damaged
MoJets will provide additional clearance
for traffic and reduce future damage. Tests
on the new system have indicated reduced
sound pressure level as well as increased
aerodynamic thrust in the tunnel.
With the ever-changing costs of fuel and
environmental concerns about greenhouse
gas emissions, improving energy efficiency
of turbomachinery has never been more
important. The ANSYS software suite
enabled Mosen’s engineers to test, design
and enhance tunnel ventilation systems to
the benefit of everyone involved.
— Fathi Tarada
Mosen Ltd., U.K.
Particle tracks colored by air velocity for the airport
Particle tracks colored by air velocity for the airport tunnel
project. The jet of air is turned away from the tunnel walls
and soffit by the MoJet.
Particle tracking comparison of a conventional jet fan
(top) and MoJet (bottom) reveals reduced downstream
Coanda effect with the MoJet.