OPEN PARA LA SEGURIDAD Y EL RENDIMIENTO
Mejore la seguridad y el rendimiento de su planta gracias a la gestión de alarmas, la supervisión de rendimiento y de activos, la visualización web de datos, la optimización, el control avanzado y la sintonía con la nueva herramienta TaiJi.
Repiensen sus métodos de trabajo y obtengan resultados inmediatos gracias a nuestros servicios, nuestra capacitación y nuestra pericia en asesoría. Manejen el cambio inteligentemente con nuestras soluciones probadas.
January 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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