Search for dissertations about: "steam pressure control"

Showing result 1 - 5 of 15 swedish dissertations containing the words steam pressure control.

  1. 1. Modeling and Control of the Paper Machine Drying Section

    University dissertation from Department of Automatic Control, Lund Institute of Technology, Lund University

    Author : Ola Slätteke; Lunds universitet.; Lund University.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reglerteknik; robotteknik; Automatiska system; Moisture control; Paper-making; Pressure control; Predictive Control; Mid-ranging Control; Wood; Drying Section Modeling; Automation; control engineering; robotics; pulp and paper technology; Pappers- och massateknik;

    Abstract : The topic of this thesis is modeling and control of the last part of the paper machine - the drying section. Paper is dried by letting it pass through a series of steam heated cylinders and the evaporation is thus powered by the latent heat of vaporization of the steam. READ MORE

  2. 2. Dryer Section Control in Paper Machines During Web Breaks

    University dissertation from Lund Univ

    Author : Jenny Ekvall; Mittuniversitetet.; Mittuniversitetet.; Lunds universitet.; Lund University.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Information technology Automatic control; TEKNIKVETENSKAP Informationsteknik Reglerteknik; Dryer Section; Web breaks; Paper machine; steam pressure control; Physical modeling; Dryer section; paper machine; physical modeling; web breaks;

    Abstract : Web breaks in the dryer section of a paper machine cause loss of production and quality problems. After a web break, the steam pressure in the cylinders must be reduced to avoid overheating. READ MORE

  3. 3. On Model Libraries for Thermo-hydraulic Applications

    University dissertation from Department of Automatic Control, Lund Institute of Technology (LTH)

    Author : Jonas Eborn; Lunds universitet.; Lund University.; [2001]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modeling; simulation; Matematik; Automation; Termisk teknik; control systems; nonlinear models; parameter estimation; proces s control; thermo-hydraulic systems; model validation; Thermal engineering; applied thermodynamics; termodynamik; Automatiska system; robotics; control engineering; reglerteknik; robotteknik; Mathematics; object-oriented;

    Abstract : Popular Abstract in Swedish Om modellbibliotek för termo-hydrauliska tillämpningar. Matematiska modeller och simulering är viktiga verktyg för att hantera tekniska system. Speciellt som trenden idag är att öka komplexiteten i system genom integrerad produktion och processoptimering. READ MORE

  4. 4. Steam and Condensate System Control in Paper Making

    University dissertation from Department of Automatic Control, Lund Institute of Technology (LTH)

    Author : Ola Slätteke; Lunds universitet.; Lund University.; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The function of a paper machine is to form the paper sheet and remove the water from the sheet. A modern paper machine is divided into three main parts, the wire section, the press section, and the dryer section. READ MORE

  5. 5. Towards Improved Control of TMP Refining Processes

    University dissertation from Department of Automatic Control, Lund Institute of Technology (LTH)

    Author : Karin Eriksson; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; control; dynamic modeling; process limitations; simplified decoupling; Refiner; refining zone temperature; internal interconnections;

    Abstract : 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 havefocused on design development, but regarding control of refiners, there is still a potential for improvements. READ MORE