Upgrading the Victor Trumper Stand at the Sydney Cricket Ground was an enormous
task, made a little easier by Austral Air Conditioning’s decision to utilise
JetVent impulse ventilation technology in the loading dock and road access
The flow of traffic associated with a loading dock means high levels of
pollutants like carbon monoxide, nitrous oxides and various fumes from the
vehicle’s fuels are produced. A good ventilation system is vital for providing
fresh air and ensuring these harmful pollutants do not accumulate.
Traditionally carparks and loading docks are fitted with ductwork which carries
exhaust air out and fresh air in. However, impulse ventilation systems use small
strategically located high velocity jet fans (also known as induction fans)
mounted directly beneath the ceiling in place of ductwork. The fans provide a
constant air flow that mix the air, ensure pollutants do not accumulate in dead
areas and direct them towards the main extraction fan.
Fantech’s New South Wales Sales Engineer Peter Hanna said the decision to
eliminate distribution ductwork could save hundreds of thousands of dollars on
“The induction fans operate on well-proven tunnel ventilation principles,” he
said. “Essentially a volume of air is thrust out of the fan at great speed. As
it travels forward, the surrounding air is carried forward, or entrained to the
next fan, ensuring a constant flow of air and continual air movement in a
Mr Hanna said further savings could be made by using smaller extraction fans.
“Fully ducted systems typically require a larger extraction fan with the
capacity to generate higher static pressure development to overcome the high
level of resistance within the ducts,” he said. “Because impulse ventilation
systems have reduced the need for, or completely eliminated ducting, we are able
to use smaller fans that consume less energy.”
Austral Air Conditioning saw the value in using impulse technology for the SCG
loading dock and long access tunnel for amenity services after Mr Hanna had
several discussions with Austral Chief Engineer, Remy Logel about the savings
associated with the system.
To confirm that the technology would work well at the SCG, drawings and
specifications were provided so that computational fluid dynamic (CFD) modelling
could be performed.
“The CFD software was used to predict the flow of air around the loading dock,
meaning we could very accurately select and place the right fan for the job,” Mr
“Based on those results we quoted the job using three JISU-CPC-100N JetVent
centrifugal induction fans, plus a variety of other axial and PowerLine in-line