Search for dissertations about: "convection"

Showing result 11 - 15 of 185 swedish dissertations containing the word convection.

  2. 11. Modelling of Mass and Heat Transport in Paper - Evaluation of Mechanisms and Shrinkage

    University dissertation from Chemical Engineering, Lund University

    Author : Erik Baggerud; Lunds universitet.; Lund University.; [2004]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; solid-based coordinates; paper; porous medium; convection; diffusion; volume fractions; mercury displacement; shrinkage; simulations; convective; hot surface; Modelling; drying; Wood; pulp and paper technology; Pappers- och massateknik;

    Abstract : In this work a one-dimensional model for the mass and heat transport in the thickness direction of paper has been developed. Solid-based coordinates were applied to simplify incorporation of shrinkage. Liquid diffusion, gas convection and vapour and air diffusion were incorporated as mass transport mechansims. READ MORE

  4. 12. Transport Coefficients during Drying of Solids containing Multicomponent Mixtures

    University dissertation from Stockholm : KTH

    Author : Rafael Gamero; KTH.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; capillary; conduction; convection; diffusion; evaporation; heat transfer; hydraulic conductivity; liquid film; liquid transport; mass transfer; Maxwell-Stefan diffusion coefficients; molar fluxes; phase equilibrium; temperature gradient; ternary mixture; thermodynamic factors; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik;

    Abstract : This study investigated the transport coefficients involved in mass and heat transfer during the drying of a porous solid partially saturated with multicomponent mixtures.  It included the coefficients governing liquid transport through the solid, the matrix of multicomponent diffusion coefficients in the liquid phase, and the effective thermal conductivity. READ MORE

  5. 13. Air Gap Method Air-Gaps in Building Construction to avoid Dampness & Mould

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Tord af Klintberg; KTH.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; humidity; air gaps; water damage; convection; building; construction;

    Abstract : .... READ MORE

  6. 14. Heated air gaps a possibility to dry out dampness from building constructions

    University dissertation from Stockholm : KTH

    Author : Tord af Klintberg; KTH.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Water damage; convection; air gap; building; construction; TECHNOLOGY Civil engineering and architecture Building engineering; TEKNIKVETENSKAP Samhällsbyggnadsteknik och arkitektur Byggnadsteknik;

    Abstract : The air gap method is a modification of the common way of building indoor walls and floors. The aim of the method is to make a construction, less fragile to water damage, with air gaps where moisture can be removed with a thermally driven air flow, caused by a heating cable. The thesis includes a number of experimental studies of this method. READ MORE

  7. 15. Distribution of Ventilation Air and Heat by Buoyancy Forces inside Buildings An Experimental Study

    University dissertation from Stockholm : KTH

    Author : Claes Blomqvist; Högskolan i Gävle.; KTH.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Civil engineering and architecture Building engineering; TEKNIKVETENSKAP Samhällsbyggnadsteknik och arkitektur Byggnadsteknik; building ventilation; thermal forces; buoyancy; gravity currents; large openings; heating; air quality; forced convection; free convection;

    Abstract : The main task of the ventilation system in a building is to maintain the air quality and (together with the heating or cooling system) the thermal climate at an acceptable level within the building. This means that a sufficient amount of ventilation air at the appropriate temperature and quality must be supplied to satisfy thermal comfort and air quality demands and that this air is distributed to the parts of the building where people reside. READ MORE