OPT FOR SECURITY AND PERFORMANCE
Improve the security and performance of your plant with alarm management, performance supervision, asset supervision, web-based data visualisation, optimisation, advanced control, and tuning with the new TaiJi tool.
Rethink your working methods and obtain immediate results thanks to our services, trainings, and consulting expertise. Manage changes intelligently with our proven solutions.
certified service providerJanuary 2005
In this issue
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About us |
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Classes and seminars |
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Trick for this month |
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To contact us |
See our previous issues :
http://www.topcontrol.com/techinfo/news.php
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See us at Exfor 2005, Montréal February 8-10; our booth is 2010.
Michel Ruel (Top Control) and Jean-Guy Lagacé (Kruger Wayagamack) will present on Tuesday February 8, at 14 :00:
- Case story : Using Performance Monitoring and Optimization Tools for a Paper Machine Start-up
See our 2005 calendar, Classes & Seminars :
See at : http://www.topcontrol.com/training/tcalendar.php
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Classes & seminars
New-Orleans, February 8 Fat Tuesday, February 9-11
EX-501-3 - Detailed Loop Analysis with ExperTune
http://www.topcontrol.com/training/printable.php?id=10&type=cours
Bangkok, February 16-18
SE-100-3 - Seminar on modern control methods
http://www.topcontrol.com/training/printable.php?id=6&type=cours
Antofagasta, Chile, March 8-10
SE-100-3 - Seminar on modern control methods
http://www.topcontrol.com/training/printable.php?id=6&type=cours
Mexico, March 15-17
SE-100-3 - Seminar on modern control methods
http://www.topcontrol.com/training/printable.php?id=6&type=cours
Montreal, March 24-25
SE-120-2 - Seminar on performance assessment techniques using PlantTriage
http://www.topcontrol.com/training/printable.php?id=29&type=cours
New-York, March 27, Easter, March 29-31
SE-130-3 - Seminar on advanced tools in process control
http://www.topcontrol.com/training/printable.php?id=28&type=cours
Montreal, April 19-21
EX-501-3 - Detailed Loop Analysis with ExperTune
http://www.topcontrol.com/training/printable.php?id=13&type=cours
Kruger Wayagamack (paper mill Eastern Canada) case study:
Kruger Paper saves 1 million annually.
Fast and efficient startup of new paper machine using PlantTriage and Top Control support.
- Startup 4 months ahead of schedule.
- 2% increase in efficiency 1 year before projected best-case startup curves.
- Resulting in an on-going savings of over 1 million dollars per year.
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Trick for this month : Heat exchanger control
Tuning a temperature loop on a heat exchanger could be tricky.
For example, consider a simple liquid-liquid heat exchanger heating soup using hot water. The soup temperature controller manipulates the hot water flow to maintain temperature soup at set point.
- This is a non-linear process (even with an equal percentage valve).
- The same change in hot water flow will produce a larger temperature change at low soup flow.
- The dynamic will also change with soup flow.
- At low soup flow, dead time and time constant will increase.
- Therefore, the tuning parameters should be adapted with the soup flow.
Feedforward measuring the soup flow and multiplying (Lead/Lag will be used) the output to the valve is also an interesting approach. Finally using a hot water flow controller in a cascade scheme will also improve performances.
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Comments, suggestions and requests are welcomed. Please e-mail us at: info@topcontrol.com
You are welcomed to visit our web site :http://www.topcontrol.com
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49 Bel-Air Street, Lévis, QC
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4734 Sonseeahray Drive
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