It's good to save energy
October 1st 2007 A new HVAC system at BT's centre
for 999 calls in Nottingham,
controlled by ABB drives, has
reportedly reduced electricity costs
by 23%.The site has also shown a
reduction in gas usage to 12% of
the previous figure.
The 18 ABB HVAC drives, ranging
in size from 5.5 to 30kW, run air
handling unit supply and extract air
fans at the site.The ABB drives sit
on a BACnet network centred on
the ADT controllers.The BACnet
network consists of a single twisted
pair daisy-chained throughout the
whole installation and relaying data
between the user's graphical front
end and the drives.This data can
include the energy consumption in
kilowatt hours used by the drive.
The system was installed by ADT
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