The need for improved energy usage has become a key issue in all industrial sectors. In the energy demanding production of mechanical pulps many efforts have focused on design development, but regarding control of refiners, there is still a potential for improvements. The possibilities of improved control performance are enhanced by reliable process measurements and here, refining zone temperature measurements are considered. This thesis includes two parallel paths. One path considers first-principles modeling of TMP refining processes. An entropy approach is applied when deriving estimates of the irreversible work associated with refining. Results show that this irreversible work, as well as the reversible thermodynamic work related to ste...
Internal variables in (C)TMP-refining processes (e. g. temperature, consistency, fiber residence tim...
The ultimate goal of this study was to examine the possibility of using temperature measurements for...
In this paper, internal variables (e. g. temperature, consistency and fiber residence time) are intr...
A successful control strategy for a thermomechanical pulp (TMP) production line must deal with conti...
Many studies have been carried out with the goalof improving pulp quality control in TMP refining pr...
In TMP-refining processes, the stabilization of the fiber pad inside the refining zone requires a ne...
The central issue of the thesis is modeling and control of the Thermomechanical Pulp (TMP) process i...
The present study used a system identification ARMAX modeling approach to analyze how the pulp prope...
Internal variables in (C)TMP-refining processes (e.g. temperature, consistency, fiber residence time...
In control strategies for thermomechanical pulp refiners, the relation between energy consumption an...
To achieve good quality control in TMP refining, relevant information about the process is needed. I...
Models of thermomechanical pulp processes must handle a large number of physical variables and machi...
Thermo-Mechanical Pulp (TMP) refiners served in this work as an example of how to combine oversample...
The study focuses on dynamic considerations in a mill-wide perspective showing that mill economy is ...
This paper focuses on three important issues; Process understanding in relation to control of nonlin...
Internal variables in (C)TMP-refining processes (e. g. temperature, consistency, fiber residence tim...
The ultimate goal of this study was to examine the possibility of using temperature measurements for...
In this paper, internal variables (e. g. temperature, consistency and fiber residence time) are intr...
A successful control strategy for a thermomechanical pulp (TMP) production line must deal with conti...
Many studies have been carried out with the goalof improving pulp quality control in TMP refining pr...
In TMP-refining processes, the stabilization of the fiber pad inside the refining zone requires a ne...
The central issue of the thesis is modeling and control of the Thermomechanical Pulp (TMP) process i...
The present study used a system identification ARMAX modeling approach to analyze how the pulp prope...
Internal variables in (C)TMP-refining processes (e.g. temperature, consistency, fiber residence time...
In control strategies for thermomechanical pulp refiners, the relation between energy consumption an...
To achieve good quality control in TMP refining, relevant information about the process is needed. I...
Models of thermomechanical pulp processes must handle a large number of physical variables and machi...
Thermo-Mechanical Pulp (TMP) refiners served in this work as an example of how to combine oversample...
The study focuses on dynamic considerations in a mill-wide perspective showing that mill economy is ...
This paper focuses on three important issues; Process understanding in relation to control of nonlin...
Internal variables in (C)TMP-refining processes (e. g. temperature, consistency, fiber residence tim...
The ultimate goal of this study was to examine the possibility of using temperature measurements for...
In this paper, internal variables (e. g. temperature, consistency and fiber residence time) are intr...