Sökning: "joelsson"

Visar resultat 1 - 5 av 21 avhandlingar innehållade ordet joelsson.

  1. 1. Primary energy efficiency and CO2 mitigation in residential buildings

    Författare :Anna Joelsson; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Environmental engineering; Miljöteknik;

    Sammanfattning : In order to control climate change it is important to limit the atmosphericconcentration of carbon dioxide (CO2). Increased energy efficiency, as well as ashift from fossil fuels to renewable resources can reduce net CO2 emission. LÄS MER

  3. 2. Techno-economic evaluation of integrated lignocellulosic ethanol production

    Författare :Elisabeth Joelsson; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; distillers dried grain with solubles; biorefinery; modelling; Aspen Plus; biogas; logging residues; spruce; wheat straw; wheat grain; heat; integration; pinch analysis; techno-economic evaluation; first generation; second generation; Ethanol; Lignocellulosic material;

    Sammanfattning : Sweden has claimed that it wants to have a fossil-free vehicle fleet in 2030 as a milestone of its ambitious goal for 2050 to be a country with a sustainable and resource-efficient energy supply without any net GHG emissions. Production of bioethanol from plant materials is one potential method of meeting this goal. LÄS MER

  4. 3. High strength paper from high yield pulps by means of hot-pressing

    Författare :Tove Joelsson; Per Engstrand; Gunilla Pettersson; Anna Svedberg; Samuel Schabel; Mittuniversitetet; []
    Nyckelord :high yield pulp; hot-pressing; lignin; paper properties; wet strength;

    Sammanfattning : AbstractHigh Yield Pulp (HYP), i.e. TMP, SGW or CTMP, is normally used in printing papers (News, SC and LWC) or in a middle layer on cardboard i.e. LÄS MER

  5. 4. Large Eddy Simulation of Turbulent Reactive Flows under HCCI Engine Conditions

    Författare :Tobias Joelsson; Strömningsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Large Eddy Simulation (LES) modeling is developed to study homogeneous charge compression ignition (HCCI) combustion under different engine operation and mixture conditions, including real engine configurations and generic test cases. A previously developed HCCI model has been validated by comparing the simulation results with engine experiments. LÄS MER

  7. 5. The influence of Pulp Type and Hot-pressing Conditions on Paper Strength Development

    Författare :Tove Joelsson; Per Engstrand; Gunilla Pettersson; Anna Svedberg; Tom Lindström; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hot pressing; lignin; HYP; high strength; wet strength; softening temperature; kraft pulp; lignocellulose;

    Sammanfattning : The hot-pressing technology has proven to have the potential for manufacturing of strong, wet stable materials based on eco-friendly renewable and recyclable lignocellulose. The purpose of this work was to study how the pulp characteristics and the hot-pressing conditions affect the dry and wet strength properties of paper. LÄS MER