FEATURE FOOD & BEVERAGE
VSD+ compressor cuts energy consumption by 76%
continue with higher capacity machines.” This experience is not uncommon
within industrial applications when system audits compare output, performance and costs of an ageing compressed air supply with contemporary and precise process needs. Advances in compressor technology and performance now make it possible to specify machines with lower kW ratings to replace oversized, older equipment, often installed on a ‘one size fits all basis’. As a result of Atlas Copco’s
Salmon producer Marine Harvest VAP (UK) Ltd has achieved annual energy savings of £21,000 after Atlas Copco updated its compressed air system with new technology
B
y downsizing from a 45 kW compressor to a GA22VSD+ rotary
screw compressor from Atlas Copco, the salmon producer has realised a 76 per cent energy saving and a 30 per cent reduction in service costs. The more compact compressor has also freed up floor space to fit a new refrigeration unit for an additional kiln. Marine Harvest VAP (UK) Ltd processes
and packages fresh and smoked salmon, using compressed air to feed the servo mechanisms of the plant. Brian Banks, head of engineering at Marine Harvest, explains: “Without a reliable compressed air supply, a significant proportion of the equipment in this factory simply would not function, meaning that production would effectively come to a halt. That’s why this project was so important to us. Delivering downsizing whilst upgrading reliability was definitely a team effort and it was reassuring to work with experienced air professionals. Although a key success for me is that the project was delivered on time and within budget, I think the 76 per cent energy savings and the 30 per cent reduction in our servicing costs that we have achieved speak for themselves.” The company is part of Marine Harvest
22 SEPTEMBER 2018 | FACTORY EQUIPMENT
ASA, the world’s largest producer of farmed Atlantic salmon. Taking care of the planet is one of the company’s four guiding principles. For this reason, energy savings, carbon footprint reduction and green initiatives are always prioritised in their thinking. When the time came to consider a new maintenance and servicing contract, the company sought advice from Atlas Copco.
SAVINGS Atlas Copco conducted an iiTrak audit to identify possible energy and service savings. The audit confirmed that the existing compressor was significantly oversized relative to the current and predicted future production demand. The compressors were originally installed as the principal operating power source for pneumatic production demands. Banks explains: “The original
compressors were sized during the factory planning phase to deliver air as a pneumatic power source for process machinery. However, fitting alternative power sources meant that we subsequently needed a reduced supply capacity, to feed servo mechanisms. This reduction in pressurised air requirement meant that it became uneconomic to
Marine Harvest VAP has also benefited from the compact dimensions of the new compressor and its vertical design
recommendation for Marine Harvest’s replacement system, a compact 22 kW GA22VSD+ rotary screw compressor and BD desiccant dryer were installed, not only to deliver a dry 8–10 bar air supply but to provide other significant benefits, including energy efficiency. Furthermore, there is sufficient capacity
in the new compressed air system to allow for additional loading and, ultimately, cross-connecting with an identical system that is planned for the Rosyth based company’s plant expansion. This will provide additional compressed air production and essential equipment redundancy to safeguard increasing production demand. Marine Harvest VAP has also benefited
from the compact dimensions of the new compressor and its vertical design. This has recovered floor space, which was used to install a refrigeration unit for post-cycle cooling of the plant’s newest fish smoking kiln. Moreover, in keeping with its green
energy initiatives, the company is planning to use the remaining floor space to install an Atlas Copco ThermoKit. This will enable recovery of compressor waste heat, to help pre-heat the factory’s process water supply. Atlas Copco’s GA Variable Speed Drive+
(VSD+) automatically adjusts the motor speed to match the compressed air supply to the air demand, thanks to its integrated inverter unit. When combined with the innovative design of the iPM permanent magnet motor, corresponding to IE4 efficiency levels, and a close-coupled drive train, the installation produces average energy savings of up to 50 per cent.
Atlas Copco
www.atlascopco.co.uk T: +44 01442 261 201
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74
