Reducing Refrigeration Energy

  Enquire / contact me

Dyneo permanent magnet motors enabled dairy producer energy savings of at least 18-21% from its refrigeration process

Reducing Refrigeration Energy
Reducing Refrigeration Energy

Minimum energy savings of at least 18% have been achieved by Belgium-based producer of dairy products from its refrigeration process as a result of switching to Dyneo permanent magnet motor technology from Control Techniques & Leroy-Somer. The solution, which also features a Leroy-Somer Powerdrive high-power modular drive, is being used in an industrial refrigeration system that cools milk after pasteurisation or sterilisation.

Based near Ghent, Inex specialises in products including milk, chocolate milk, buttermilk, fermented milk, yoghurt, cream and butter. The company, founded in 1898, manufactures and packages both fresh and long-life produce for large European retail chains and multinationals. It has around 440 employees and annual sales of about €150 million.

Since refrigeration is a key element in the manufacturing process, optimum operation and reliability is paramount. As part of a recent investment package, Inex acquired four new industrial refrigerator systems based on Sabroe SMC 106E reciprocating ammonia compressors. At the time, the company had heard good reports of permanent magnet motors and wanted to install one as a trial. As a result, three of the compressors were supplied with standard Leroy-Somer IE2 (90kW) asynchronous AC motors, and one with a Leroy-Somer IE4 (105kW) synchronous permanent magnet motor from the Dyneo range.

The refrigeration systems are used to cool water to 1°C, which in turns cools milk to around 4°C. The installation operates almost continuously, but at variable load. Here, the benefits of permanent magnet motors come to the fore as their performance retains almost constant partial load, unlike standard asynchronous motors, generally leading to a reduction in energy consumption.

To put the theory to the test, Control Techniques and Leroy-Somer’s experts visited Inex after the installation was complete. They discovered that the refrigerator operating with the Dyneo permanent magnet motor was delivering significant energy savings.

Using a digital energy analyzer, the drive and motor experts made a series of power measurements comparing two refrigeration units working at the same conditions. One featured the LSRPM280SC-T synchronous magnet motor (105kW) running at 1500 rpm and Leroy-Somer Powerdrive, while the other housed the standard LSES280MK-T (90kW) asynchronous motor running at 1487 rpm and a competitor drive.

It was found that energy savings were being achieved using the permanent magnet motor across a range of different load profiles. Depending on the type of measure – involving number of pistons, speed, evaporation temperature and condensation temperature – the calculated energy savings were between 18-21%, taking into account any losses from the drive and the motor.

Posted on September 20, 2016 - (914 views)
Related articles
Stop wasting time on network commissioning reports
"Change is a Collection of Processes''
Novotema Celebrates its 40th Anniversary
TEL 10WI Series
AI Convention Europe Presents KAPTAIN
Honeywell Becomes Principal Member of ODVA
Faulhaber Lands in Italy
Compact True Color Sensor
Modular Aluminum Guide Channel
Grinding Machine
Abu Dhabi International Petroleum Exhibition & Conference
Connect Everything with eFactory
Sensing Innovation in Process and Control
Mechatronic Products
SENSORS & INSTRUMENTATION for Test Measurement & Control
IIoT I/O Series
Hannay Reel Hose and Cable Reels
SPS IPC Drives 2018 - Free Ticket
Level Switches
Ultrasonic Flowmeter for Air
Compact True Color Sensor
A new performance class in inductive displacement measurements
Positioning System
Torque Limiter
Ultrasonic Flowmeters for Compressed Air
Isolated 4-port PSE Controller
Multifunction Panel Meters DCM20 series
450 Watt Medical Power Supplies
Portable Emissions Analyzer E8500 plus
Photovoltaic Fuse Holder
AI Convention Europe Presents KAPTAIN
Ultrasonic Flowmeters for Compressed Air
JDN Mini 24/07
Motion Controller from FAULHABER with STO shutdown
Temperature control technology
Multi-tasking Communication Server
Guidance Systems for Higher Duty XTS Applications
Advanced Humanoid Robot Hand
Virtual Personal Assistant ODP S3
On the Road to Energy Sustainability