Sökning: "kinetic energy losses"

Visar resultat 1 - 5 av 20 avhandlingar innehållade orden kinetic energy losses.

  1. 1. Electrified Integrated Kinetic Energy Storage

    Författare :Magnus Hedlund; Hans Bernhoff; Markus Mueller; Uppsala universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; flywheel energy storage; magnetic bearings; carbon composite; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : The electric car is a technically efficient driveline, although it is demanding in terms of the primary energy source. Most trips are below 50 km and the mean power required for maintaining speed is quite low, but the system has to be able to both provide long range and high maximum power for acceleration. LÄS MER

  3. 2. Bio-coal for the sustainable industry : A scientific approach to optimizing production, storage, and usages

    Författare :Aekjuthon Phounglamcheik; Kentaro Umeki; Markus Broström; Capucine Dupont; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energiteknik; Energy Engineering;

    Sammanfattning : Bio-coal produced from biomass is a promising material to replace fossil coal in order to achieve net-zero greenhouse gas emission from the industrial sector. Bio-coal with quality comparable to that of fossil coal can be produced by high-temperature pyrolysis at ≥500 ºC, but the production efficiency is relatively low due to low bio-coal yield at high pyrolysis temperatures. LÄS MER

  4. 3. Experimental investigation of nozzle guide vanes in a sector of an annular cascade

    Författare :Julien Roux; KTH; []
    Nyckelord :Turbomachinery; annular cascade test facilities; steady state; pressure measurements; aerodynamic probe calibration; coolant concentration; film cooling; secondary flow; kinetic energy losses;

    Sammanfattning : .... LÄS MER

  5. 4. Hydraulic transformers for energy efficient systems

    Författare :Ronnie Werndin; Linköpings universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER;

    Sammanfattning : THE FOCUS OF this thesis is to evaluate and analyse secondary controlled hydraulic systems with linear loads. The main objective has been the hydraulic transformer, with special respect to Innas Hydraulic Transformer, IHT1. LÄS MER

  7. 5. Kinetic modelling of runaways in plasmas

    Författare :Ola Embréus; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; runaway; Fokker-Planck equation; tokamak; Boltzmann equation; positrons; bremsstrahlung; plasma; synchrotron radiation;

    Sammanfattning : The phenomenon of runaway occurs in plasmas in the presence of a strong electric field, when the accelerating force overcomes the collisional friction acting on the charged particles moving through the plasma. Electron runaway is observed in both laboratory and space plasmas, and is of great importance in fusion-energy research, where the energetic electrons can damage the plasma-facing components of fusion reactors. LÄS MER