Tunnel Ventilation Heavy-duty industrial centrifugal fans Compact industrial centrifugal fans Plug fans Smoke extraction fans

VST Jet Fans Road Tunnels Rail Tunnels and Metro Systems VST is the fan for road tunnel ventilation systems. Equipped with the DLK system the VST range of fans is the perfect choice for rail tunnels and metro systems. The fan is suitable for all types of road tunnel ventilation systems and can be used as both supply and exhaust fan. VST is designed for use in transverse and semi-transverse ventilation systems and also in combination with DLK VST jet fans in longitudinal ventilation systems. With its design exibility, VST can be placed horizontally or vertically. Designed and tested for elevated...

Tunnel Ventilation Systems Ventilation System Types Tunnels play an important part in the global development of infrastructures and urban communications. Safety aspects and air quality criteria put special demands on the tunnel ventilation systems in new projects and are important reasons for the current upgrading of existing tunnel systems. Main objectives for the tunnel ventilation system are to maintain good air quality and provide smoke control under emergency. Other functions are to control the amount of emissions exhausted from tunnel portals and ventilation shafts to the surroundings,...

VST Jet Fans Tunnel Ventilation Methods Tunnel ventilation can be performed according to any of three basic methods, with hybrid solutions as further options: In its most basic conguration the air ow moves from the tunnel entrance portal to the exit portal within the main tunnel cross section area, without separate ventilation ducts along the tunnel. The restriction in fresh air only from the entrance area involves, for a tunnel with vehicular emissions, a pronounced increase in pollutant concentration and exposure as a function of distance when travelling through the tunnel. For longer longitudinally...

by jet fans (VST) supplemented by central exhaust- and supply fans (VST) in ventilation shafts Transverse ventilation Semi-transverse ventilation Exhaust system.

LRD Main direction of thrust Dimension sheet optionally: Accessory: ceiling suspension thermal and sound insulation cylindrival silencer Lenght without air straightener LV (mm) Length with air straightener LV (mm) Test standards and procedures Performance The VST is tested for performance following the international standard ISO/TC 117/150/DIS 13350.0 (draft). Samples of the VST series have been subject to elevated temperature tests at 400°C for two hours. All tests have been carried out at the DLK Technical Centre with its DIN registered fan laboratory. Support arrangement The performance and...

Technical Data Sheet 5607-2 Discharge area Absorbed power(kW) Thrust (N) * main direction of thrust without air straighteners Thrust (N) air straighteners on both sides Sound pressure level dB(A) 10 m 45° * in reverse operation = 95% of main direction of thrust Text for Tender Tunnel jet fans, direct driven, Series VST DN 560 - DN 2500 Suitable for flammable gases up to 200°C/120 min, 300°C/120 min and 400°C120 min, and for extract and supply air up to max. 80 °C continuous temperature Consisting of: - Casing made from sheet steel with welded or rolled flanges on both sides and welded motor support...

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