38 PAckAging, lAbElling & logiSticS
Compressed air management at
snack food plant cuts energy bill
ne of the largest snack food plants comments: “The project began with an audit
A compressed air in the world is using an EnergAir carried out on the two production areas
management system is
Compressed Air Management that until recently used completely separate
helping reduce reduce
O system to reduce energy bills by compressor houses and air ring mains. EnergAir
energy bills at a snack
£27 000 per annum. Helping the team towards carried out a comprehensive audit that measured
food plant.
achieving their target of a 10 per cent reduction system pressure, air usage and benchmarked
in overall energy usage has included combining a series of key performance indicators before
Un système de gestion de
the compressed air supply for two production the change and upgrade including; accurate
l’air comprimé permet de
operations on one site, integrating two retrofit metering of power consumption in kW/hours,
réduire les factures variable speed drives, reducing system pressure air production volume in m
3
and efficiency in
d’énergie d’une
and fine tuning compressor usage. kW/m
3
.”
installation de snacks
The energy savings have been achieved by Analysis of the data led to a set of estimated
alimentaires.
applying a combination of system pressure results that predicted the energy savings
optimisation principles, matching air generation achievable by fitting an EnergAir management
Druckluftmanagement-
closely to demand, ensuring compressors are control system and retrofit VSDs at each site.
system hilft einem Werk
working at their optimum speed/efficiency, There are seven compressors in total, three
für Snack-Produkte, and operating compressors only when they are 160kW units and four 200kW units – production
Energierechnungen needed. The central element of control included runs 24hrs. Based on the overall cost of installing
senken.
in both sites is an EnergAir SX control unit, the system balanced against the reduction in
a specialised supervisory and control module energy that could be achieved, the payback
designed to provide optimised pressure and period was estimated at 18 months for the entire
sequence management of all the air compressors project.
on each site. Based on these predictions, the Facility
EnergAir Regional Manager Nigel Clark Co-ordinator at the time ordered the EnergAir
Fig. 1. EnergAir carried out a comprehensive audit that measured system pressure, air usage and
benchmarked a series of key performance indicators before the change and upgrade.
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