Sökning: "blade out"

Visar resultat 16 - 20 av 78 uppsatser innehållade orden blade out.

  1. 16. Structural temperatures of wind turbine blades under icing conditions

    Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

    Författare :Elise Brouillette; [2021]
    Nyckelord :Aerodynamics; Anti-icing Systems; Glass transition temperature; Heat transfer; Wind turbines;

    Sammanfattning : As clean energy demand is on the rise and the wind energy sector in growth, locations with the highest wind potential are becoming of higher interest for wind farm projects, but they are located in colder regions. In cold climates, ice accumulation on wind turbine blades is a serious issue, both in terms of safety and performance. LÄS MER

  3. 17. New Passdoor for Fix Panel Industrial Gates

    Master-uppsats, Lunds universitet/Innovation

    Författare :Jonathan Schulz; [2021]
    Nyckelord :Product development Assa Abloy; Passdoor; Industrial doors; Solid mechanics; Technology and Engineering;

    Sammanfattning : This Master Thesis, executed in collaboration with ASSA ABLOY Entrance Systems, focused on designing a new and improved secondary entrance for overhead panel industrial gates, which is part of the existing product line. The secondary entrance developed in this project is called a Passdoor, which is placed in a fixed section next to the gate and is used to separate pedestrian traffic through the industrial gate from vehicles and deliveries. LÄS MER

  4. 18. Validation of the Westinghouse BWR nodal core simulator POLCA8 against Serpent2 reference results

    Master-uppsats, KTH/Fysik

    Författare :Mathilde Gaillard; [2021]
    Nyckelord :Nodal Core Analysis; Monte Carlo Methods; CBH Effects; Nodal kärnanalys; Monte Carlo-metoder; CBH-effekter;

    Sammanfattning : When a new nodal core simulator is developed, like all other simulators, it must go through an extensive verification and validation effort where, in the first stage, it will be tested against appropriate reference tools in various theoretical benchmark problems. The series of tests consist of comparing several geometries, from the simplest to the most complex, by simulating them with the nodal core simulator developed and with some higher order solver representing the reference solution, in this case on the Serpent2 Monte Carlo transport code. LÄS MER

  5. 19. Performance analysis of a small-scalewind turbine at variable pitch and withpitch unbalance

    Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

    Författare :Francesco Mazzeo; [2021]
    Nyckelord :Wind energy; wind turbine; pitch angle; pitch unbalance; Blade Element Momentum BEM theory; Computational Fluid Dynamics CFD ; wind tunnel experiments; oscillations;

    Sammanfattning : When it comes to design a wind turbine rotor, several parameters have to be taken into account. The present work focuses on the inclination of the blades with respect to the rotor plane, namely the pich angle. LÄS MER

  7. 20. Dimensionering och konstruktion av passiv mekanisk pitch för småskaliga horisontalaxlade vindkraftverk

    Kandidat-uppsats, Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Författare :David Oljelund; [2020]
    Nyckelord :Wind; turbine; wind; power; pitch; mechanical; passive; design; dimension; sizing; HAWT; axis; horizontal; axle; small; scale; torsion; spring; spring; loaded; torsion; BEM; blade; element; mechanical; engineering; power; production; over; rated; wind; tip; speed; ratio; Vindkraft; vind; kraft; pitch; mekanisk; passiv; konstruktion; dimensionering; horisontalaxlad; horisontal; axlad; horisontalaxlat; småskala; småskalig; små; skala; vridfjäder; torsionfjäder; fjäderbelastad; fjäder; vrid; torsion; BEM; Blad; Element; maskinteknik; effektproduktion; över; märkvind; löptal;

    Sammanfattning : För vindkraftverk i mindre skala används i huvudsak två sätt att avlasta vid höga vindhastigheter, stallreglering och girning ur vind. En tredje metod är att pitcha rotorbladet till en mindre attackvinkel. Då minskar belastningen på rotorbladet samtidigt som effektgenerering kan bibehållas. LÄS MER