Estimation of Condensate Inside Dryer Cylinders During Section Shutdown

The presence of condensate inside the dryer cylinders produces a significant increase in the power requirements during starting, putting at risk the capacity of the drive to complete a successful start. In past papers, authors developed estimation algorithms for the detection of condensate during se...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2014-05, Vol.50 (3), p.1668-1677
Main Authors: Valenzuela, M. Anibal, Bentley, John Martin, Lorenz, Robert D.
Format: Article
Language:English
Subjects:
Acceleration
Algorithms
Bars
Complement
condensate observer
Condensates
Correlation
Cylinders
Driers
dryer cylinders
Estimation
Fluids
paper machine
power requirements
Robustness
Shutdowns
Strategy
Torque
Visualization
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Summary:The presence of condensate inside the dryer cylinders produces a significant increase in the power requirements during starting, putting at risk the capacity of the drive to complete a successful start. In past papers, authors developed estimation algorithms for the detection of condensate during section starting. This paper proposes and evaluates a new strategy that will complement the previous algorithms. This strategy will detect the presence of condensate from the condensate collapsing during the section shutdown. The proposed correlations are derived through a complete experimental evaluation in two experimental cylinders covering rim thicknesses up to 55 mm. The estimation algorithms are split into a low-/moderate-condensate-load zone and a high-condensate-load zone. Results confirm the robustness and accuracy of the proposed algorithms.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2013.2283317