Search for dissertations about: "material flows"

Showing result 11 - 15 of 237 swedish dissertations containing the words material flows.

  2. 11. Modeling of Gas Flows in Steelmaking Decarburization Processes

    Author : Zhili Jack Song; Pär Jönsson; Seppo Louhenkilpi; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VOD; nozzle; jet; vacuum; BOF; LD; AOD; post combustion; flue; CFD;

    Abstract : The purpose of the current study is to increase the understanding of different steelmaking processes at the decarburization stages by use of mathematical modeling. More specifically, two De-Laval nozzles from a VOD (Vaccum Oxygen Decarburization) process, which is used for producing stainless steels with ultra-low carbon grades, was investigated for different vessel pressures. READ MORE

  4. 12. Toward Lean Remanufacturing : Challenges and Improvements in Material and Information Flows

    Author : Jelena Kurilova-Pališaitienė; Erik Sundin; Bozena Poksinska; Magnus Wiktorsson; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Remanufacturing is an environmentally sound material recovery option which is essential to compete for sustainable manufacturing. The aim with remanufacturing at a majority of companies is to prolong physical product performance by delivering the same or betterthan-original product quality. READ MORE

  5. 13. On Remanufacturing Systems : Analysing and Managing Material Flows and Remanufacturing Processes

    Author : Johan Östlin; Mats Björkman; Staffan Bröte; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Remanufacturing; After Market; Product Recovery; Lean Production; Production Economics; Manufacturing engineering; Produktionsteknik;

    Abstract : The aim of remanufacturing is to retrieve a product’s inherent value when the product no longer fulfils the user’s desired needs. By taking advantage of this inherent value through different product recovery alternatives, there is a potential for both economically and environmental advantageous recovery of products. READ MORE

  6. 14. Data uncertinties in material flow analysis.Local case study and literature survey

    Author : Lena Danius; KTH; []
    Keywords : data uncertainies; sensitivity analysis; material flow analysis; MFA; method to determine data uncertainties; case study; ComBox model; nitrogen flows;

    Abstract : The aim of this thesis is to discuss and analyse the influenceof data uncertainties with regard to the reliability of materialflow analysis (MFA) studies. MFA, as a part of environmentalsystems analysis, is a method belonging to the research field ofindustrial ecology and more specifically industrial metabolism. READ MORE

  7. 15. Material migration in tokamaks : Erosion-deposition patterns and transport processes

    Author : Armin Weckmann; Marek Rubel; Rudolf Neu; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEXTOR; fusion; plasma physics; transport; migration; tracers; tokamak; limiter; divertor; high-Z; ion beam analysis; Rutherford backscattering; Nuclear reaction analysis; Elastic recoil detection analysis; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Controlled thermonuclear fusion may become an attractive future electrical power source. The most promising of all fusion machine concepts is called a tokamak. The fuel, a plasma made of deuterium and tritium, must be confined to enable the fusion process. It is also necessary to protect the wall of tokamaks from erosion by the hot plasma. READ MORE