Budapest Metro 4

Providing ventilation for the metro line tunnel in Budapest, Hungary.

Project

Ventilation for the new Metro line 4 tunnel 7.4km long.

Need

High temperature tunnel and station ventilation fans.

Solution

Steel impeller, 400°C @ 1hr fans.

Effective ventilation for over 7km of metro tunnels

Budapest Metro Line tunnel 4, under the ownership of the Hungarian state and the Municipality of Budapest, is divided into 3 phases. The 1st phase which is 7.34 km long, starts from Kelenföldi station and up to Keleti main railway station passing under the river Danube. Phase 2 comprises of the 3.2 km long twin running tunnels from Keleti to Bosnyak tēr and the 3rd phase consists of the 2.1 km stretch from Kelenföldi to Mádarhegy.

The large JM Axial Fans Woods Air Movement supplied are responsible for extracting heat and fumes from the tunnel system, keeping workers and passengers safe. Should there ever be an emergency, the fans will automatically switch mode to control the smoke, effectively providing crucial time to enable safe evacuation and to help fire crews gain access.

KEY PRODUCTS

1.6m JMFTS Horizontal Fan (50m3/s@1134Pa)
1.4m JMFTS Horizontal Fan (40m3/s@1365Pa)
1.4m JMFTS Vertical Fan (40m3/s@1365Pa)
Fire rated for 400°C @ 1hr
Flexible connectors and vibration mounts

Fire Rated For

400°C at 1 hour

Tunnel Length

7.4 km

Impeller Material

Steel

More References

Two of the Woods jet fans installed in Riyadh Metro line 3

Riyadh Metro 3: Problem Solving Excellence

A stock photo of the entrance/exit to the Tuscarora Tunnel

Tuscarora Tunnel Upgrade

A stock image of an underground train at a station with people walking along the platform

Metro Performance Improvement and Upgrade

A total of 55 large axial ventilation fans, ranging from 16 to 50 kW, had reached theoretical end of life after 20+ years of service in a Metro Ventilation system.