Fläkt Woods has
upgraded 23 Variable Air
Volume (VAV) fans
ranging from 30 to 60kW
and four 30kW cooling
tower fans at the
European Bank for
Reconstruction and
Development in London;
energy usage has been
calculated to have been
reduced by around 70%.

This project was designed to
monitor the overall effect of variable
speed drives when fitted to an axial
fanned AHU. By fixing the fan b
varying the fan speed, the energy
usage was monitored and energy use
calculated. The expected annual
savings on electricity costs
are £4266 with an
environmental benefit in
terms of CO2 emission
reduction of 30t.

Fläkt Woods opted to
use the ABB HVAC range
of drives to match the fans
and existing control
systems.

Fläkt Woods worked
with Trend engineers to
ensure a seamless change over from
variable pitch to 0-10V control via a
Trend BMS system.