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Optical Brightening Agents — Where Next?, Paper360º March/A
Optical Brightening Agents — Where Next?, Paper360º March/April 2017
Journal articles
Magazine articles
Global Study: Most People Highly Value Paper and Print, Pape
Global Study: Most People Highly Value Paper and Print, Paper360º May/June 2017
Journal articles
Magazine articles
TAPPI JOURNAL Summaries, Paper360º November/December 2017
TAPPI JOURNAL Summaries, Paper360º November/December 2017
Journal articles
Magazine articles
Effect of conductivity on paper and board machine performanc
Effect of conductivity on paper and board machine performance— a review and new experiences, TAPPI JOURNAL October 2017
Journal articles
Magazine articles
Three-dimensional pore structure visualization and character
Three-dimensional pore structure visualization and characterization of paper using X-ray computed tomography, TAPPI JOURNAL September 2017
Journal articles
Magazine articles
Ready to Compete for Another Century, Paper360º September/Oc
Ready to Compete for Another Century, Paper360º September/October 2017
Journal articles
Magazine articles
Drying Optimization at RDM Ovaro, Paper360º September/Octobe
Drying Optimization at RDM Ovaro, Paper360º September/October 2017
Journal articles
Magazine articles
Making Good Bacteria Even Better: Bioaugmentation in Pulp a
Making Good Bacteria Even Better: Bioaugmentation in Pulp and Paper Wastewater Treatment, Paper360º September/October 2017
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Magazine articles
On the nominal transverse shear strai to characterize the severity of creasing, TAPPI JOURNAL April 2018
On the nominal transverse shear strai to characterize the severity of creasing, TAPPI JOURNAL April 2018
Journal articles
Magazine articles
Numerical investigation of the effect of ultrasound on paper drying, TAPPI Journal March 2022
ABSTRACT: The paper drying process is very energy inefficient. More than two-thirds of the total energy used in a paper machine is for drying paper. Novel drying technologies, such as ultrasound (US) drying, can be assessed numerically for developing next-generation drying technologies for the paper industry. This work numerically illustrates the impact on drying process energy efficiency of US transducers installed on a two-tiered dryer section of a paper machine. Piezoelectric transducers generate ultrasound waves, and liquid water mist can be ejected from the porous media. The drying rate of handsheet paper in the presence of direct-contact US is measured experimentally, and the resultant correlation is included in the theoretical model. The drying section of a paper machine is simulated by a theoretical drying model. In the model, three scenarios are considered. In the first scenario, the US modules are positioned in the dryer pockets, while in the second scenario, they are placed upstream of the drying section right after the press section. The third case is the combination of the first and second scenarios. The average moisture content and temperature during drying, enhancement of total mass flux leaving the paper by the US mechanism, total energy consumption, and thermal effect of heated US transducers are analyzed for all cases. Results show that the application of the US can decrease the total number of dryer drums for drying paper. This numerical study is based on the US correlation obtained with the US transducer direct-contact with the paper sample. Thus, future work should include US correlation based on a non-contact US transducer.