Ventilation on Demand

The ventilation system:

• controls air quality in the tunnels

• responds to air sensors in the tunnel

• only uses power when needed (“on demand”)

This system has:

• reduced power use by about 70%

• reduced greenhouse gas emissions

• made the tunnels quieter

Each year, this saves about:

• 9,000 tonnes of emissions

The power usage chart shows the reduction in power usage when the new system was fully activated in mid March 2018.

The new system won EastLink the ITS Australia National Industry Award 2018.