Sökning: "Dielectric property"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Dielectric property.

  1. 1. The Paradigm Shift for Substations Technology within Wind Power Applications from Onshore to Floating

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Ahmad Talaat Hifzy; [2023]
    Nyckelord :Floating; offshore; substation; transformer; GIS; equipment; high-voltage; fatigue; Flytande; havsbaserad; station; transformator; GIS; utrustning; högspänning; utmattning;

    Sammanfattning : Floating wind turbines are attracting more attention as more than three-quarters of the total offshore technical potential is located in deep water, leading to a growing trend in floating wind farm projects. Consequently, it becomes necessary to develop Floating Offshore Substation (FOSS) to step up voltage and efficiently transmit power to the shore with minimal losses. LÄS MER

  3. 2. Fire Safety of Facades

    Master-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Bogdan-Grigore Branisteanu-Albulescu; [2019]
    Nyckelord :polystyrene; graphene; façade; pyrolysis; Technology and Engineering;

    Sammanfattning : Façade fires are a big concern due to past incidents and the large number of victims encountered. Vertical flame spread mechanism specific to this type of fires is a complex phenomenon with parameters that are often difficult to be coupled. LÄS MER

  4. 3. Characterizing particulate carbon using dielectric property measurements

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Madeleine Syk; Joakim Vollmer; [2018]
    Nyckelord :black carbon; elemental carbon; carbonaceous aerosols; soot; fullerene C60; multiwalled carbon nanotubes; mesoporous carbon; impedance; dielectric; snow melting; capacitance; waveguide;

    Sammanfattning : Interest in effects of carbonaceous particles in the atmosphere has recently taken an upswing due to knowledge of how these particles affect our environment. Carbonaceous aerosols are characterized by their dark color, giving them the ability to absorb both incoming and outgoing radiation of all wavelengths in the atmosphere. LÄS MER

  5. 4. Study of Antenna Concept for Wearable Devices

    Magister-uppsats, KTH/Elektroteknisk teori och konstruktion

    Författare :Maria del Rosario Llenas; [2015]
    Nyckelord :Smart Watch; Wearable Antennas; Antenna Design; CMA; Feed Position;

    Sammanfattning : SmartWatches are watches with the property that they can connect to internet.The interest and market for smartwatches has increased remarkably over the pastfew years. However, most of today's solutions cover only the frequency bandsBluetooth (BT) and Global Positioning System(GPS). LÄS MER

  7. 5. Effect of Heat Treatment on Morphology and Dielectric Properties of Polyethylene

    Master-uppsats, KTH/Elektroteknisk teori och konstruktion

    Författare :Md Tanbhir Hoq; [2014]
    Nyckelord :Polyethylene; Morphology; Annealing; Sample Swelling; Dielectric Spectroscopy; Differential Scanning Calorimetry; Crystallinity; heat Treatment; Power Cable; High Voltage; Permittivity; Polyeten; Morfologi; Anlöpning; Svällning; Dielektrisk spektroskopi; Differentiell svepkalorimetri; Kristallinitet; Värmebehandling; Kraftkabel; Högspänning; Permittivitet;

    Sammanfattning : Polyethylene is used extensively as an insulating material in high voltage power cables, it is therefore important to understand the behaviour of polyethylene under different conditions. This is a study regarding the relation of heat treatment and the effect of morphological changes on the dielectric properties of polyethylene samples. LÄS MER