Fläkt Woods - Tracked transit system fans and inverters at T5
Heathrow
Fläkt Woods has supplied six 1.6m diameter, truly
reversible Axial Flow fans, fitted with energy saving
inverters, for the Tracked Transit System (TTS) at T5
Heathrow working for Mott MacDonald on behalf of BAA.
The latest range of Fläkt Woods inverters offer real
technological innovation. Installing a matched variable
speed drive allows sensitive controllability of fan
speed, enabling fans to run at their optimum speeds to
meet the changing system requirements, thus offering the
potential of considerable energy savings at part load.
Fans will be used for general ventilation of the tunnel
on a daily basis, and are capable of operating for 1
hour at temperatures of 250°, should they need to run in
a fire scenario. The inverters allow the system to run
at maximum performance. By only running the fans to meet
demand they save considerable money and energy over
conventional damper control.
In a fire situation, the system has very sophisticated
computer model that runs each of the fans in either
direction to control the smoke and ensure the safe
evacuation of passengers from the tunnel.
Inverter and fan specialists from Fläkt Woods worked
very closely with the team at T5 to ensure the
ventilation system sacrificed nothing in its safety
critical role, whilst still being able to perform its
daily operation.
The TTS is a light rail system providing an underground
link between the various terminal buildings which make
up T5. When it opens in March 2008, the trains will
depart from the stations through 2 parallel tunnels
every 90 seconds with a journey time of 45 seconds.
Projects like this highlight Flakt Woods as a leading
supplier of integrated fan and inverter solutions to
large schemes.
mail: info.uk@flaktwoods.com
Arundel Jones Associates Ltd
Hill Farm, Linton Hill, Maidstone, Kent ME17 4AL
Tel : 01622 745333
news@buildingdesign.co.uk
Registered in England and Wales No. 07334149
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