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Showing result 1 - 5 of 7 swedish dissertations matching the above criteria.

  2. 1. On Heat and Paper : From Hot Pressing to Impulse Technology

    Author : Marco Francesco Carlo Lucisano; KTH; []
    Keywords : Paper; Impulse Drying; Heat Transfer; Phase Change; Heat-Pipe Effect; Delamination; Flashing;

    Abstract : Impulse technology is a process in which water is removedfrom a wet paper web by the combined action of mechanicalpressure and intense heat. This results in increased dewateringrates, increased smoothness on the roll side of the sheet, andincreased density. READ MORE

  4. 2. On the mechanism of heat transfer with phase change during impulse pressing of paper

    Author : Marco F. C. Lucisano; KTH; []
    Keywords : Paper; High-intensity; Presses; Impulse drying; Heat transfer; Phase transitions; Heat-pipe effect; Steam; Delamination; Flashing; Permeability; Z direction;

    Abstract : .... READ MORE

  5. 3. Exit choice in fire emergencies - Influencing choice of exit with flashing lights

    Author : Daniel Nilsson; Avdelningen för Brandteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Theory of Affordances.; green flashing lights; active evacuation systems; affiliation; exit choice; evacuation; egress; Fire;

    Abstract : Fire accidents and evacuation experiments have revealed that people often use familiar exits in fire emergencies. However, the design of emergency exits has also been shown to impact people’s choice of exit. READ MORE

  6. 4. Superheated Steam Drying of Wood Chips in Pneumatic Conveying Dryers

    Author : Christian Fyhr; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; superheated steam; drying; pneumatic conveying; convective; non-spherical particles; wood; heat transfer;

    Abstract : This thesis contains a fundamental investigation of a pneumatic conveying dryer. The model presented can be used both for design and rating purposes and, although the main emphasis is put on the drying of wood chips in superheated steam, the results can be used for other systems as well. READ MORE

  7. 5. Citrus Waste Biorefinery: Process Development, Simulation and Economic Analysis

    Author : Mohammad Pour Bafrani; Mohammad Pourbafrani; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; process simulation; encapsulated yeast; Citrus wastes; economic analysis; computational fluid dynamic simulation; pectin; limonene; methane; ethanol;

    Abstract : The production of ethanol and other sustainable products including methane, limonene and pectin from citrus wastes (CWs) was studied in the present thesis. In the first part of the work, the CWs were hydrolyzed using enzymes – pectinase, cellulase and β-glucosidase – and the hydrolyzate was fermented using encapsulated yeasts in the presence of the inhibitor compound ‘limonene’. READ MORE