Search for dissertations about: "process stability"

Showing result 1 - 5 of 813 swedish dissertations containing the words process stability.

  1. 1. Citrus Waste Biorefinery Process Development, Simulation and Economic Analysis

    University dissertation from Chalmers University of Technology

    Author : Mohammad Pourbafrani; Högskolan i Borås.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; citrus waste; biorefinery; ethanol; biogas; Bioteknik; process simulation; encapsulated yeast; Citrus wastes; economic analysis; computational fluid dynamic simulation; pectin; limonene; methane;

    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

  2. 2. The process atmosphere as a parameter in the Laser-Powder Bed Fusion process

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Camille Nicole Géraldine Pauzon; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; process stability; 316L stainless steel; Ti-6Al-4V; Laser-Powder Bed Fusion; processing atmosphere; process control; powder degradation; Additive Manufacturing;

    Abstract : Laser-Powder Bed Fusion (L-PBF) is an Additive Manufacturing (AM) technique that allows to produce near-net shape components of complex design. Applied to metallic materials, L-PBF allows to consolidate subsequent layers of powder using the heat from laser radiation. READ MORE

  3. 3. Global stability and feedback control of boundary layer flows

    University dissertation from Stockholm : KTH

    Author : Espen Åkervik; KTH.; KTH.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Stability; Global Stability; Feedback Control; Control; Estimation; Absolute Convective Instabilities; Model Reduction; TECHNOLOGY Engineering mechanics Fluid mechanics; TEKNIKVETENSKAP Teknisk mekanik Strömningsmekanik;

    Abstract : In this thesis the stability of generic boundary layer flows is studied from a global viewpoint using optimization methods. Global eigenmodes of the incompressible linearized Navier-Stokes equations are computed using the Krylov subspace Arnoldi method. READ MORE

  4. 4. Monitoring and Control of Robotized Laser Metal-Wire Deposition

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Almir Heralic; Alexander Kaplan; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Laser Metal Wire Deposition; Additive Layer Manufacturing; Robotic Weld Equipment; Optical Sensors; Process Control; Process Development; Process Stability; Iterative Learning Control; Manufacturing and materials engineering; Produktions- och materialteknik;

    Abstract : The thesis gives a number of solutions towards full automation of the promising manufacturing technology Robotized Laser Metal-wire Deposition (RLMwD). RLMwD offers great cost and weight saving potentials in the manufacturing industry. READ MORE

  5. 5. Monitoring and Control of Robotized Laser Metal-Wire Deposition

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Almir Heralic; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive Layer Manufacturing; Iterative Learning Control; Process Stability; Optical Sensors; Process Control; Robotic Weld Equipment; Process Development; Laser Metal Wire Deposition;

    Abstract : The thesis gives a number of solutions towards full automation of the promising manufacturing technology Robotized Laser Metal-wire Deposition (RLMwD). RLMwD offers great cost and weight saving potentials in the manufacturing industry. READ MORE