Sökning: "offshore vessels"

Visar resultat 1 - 5 av 19 uppsatser innehållade orden offshore vessels.

  1. 1. Major Component Replacement on Floating Wind Turbines

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Kilian Galle; [2023]
    Nyckelord :;

    Sammanfattning : Among the challenges that floating offshore wind (FOW) energy faces today, operation and maintenanc ecosts, and especially major component replacements (MCR), are an important cost reduction lever. MCRs are defined as any failure on a wind turbine requiring the change of an entire main component of the turbine, such as a gearbox, generator, blade, nacelle, etc. LÄS MER

  3. 2. Decarbonisation of service vessels in offshore wind power through power-to-X self-sufficiency

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Miljö- och energisystem

    Författare :Clemens Kellander; Ludvig Fredriksson; [2023]
    Nyckelord :Alternative fuels; compressed hydrogen; battery; production; energy storage; operation and maintenance; O M; offshore; wind power; service vessel; crew transfer vessel; CTV; service operations vessel; SOV; decarbonisation; global warming potential; life cycle; Technology and Engineering;

    Sammanfattning : This report examines the possibilities of decarbonising operation & maintenance vessels for a prospective floating offshore wind power park at the Utsira Nord site in Norway, through self-sufficient energy carrier production utilizing power-to-X-solutions. Possible alternative fuels are identified as compressed hydrogen, batteries, liquid hydrogen, ammonia, methanol, and biofuels, out of which the former two are the subject for thorough investigation in this report. LÄS MER

  4. 3. Hydrogen Production and Storage Optimization based on Technical and Financial Conditions : A study of hydrogen strategies focusing on demand and integration of wind power.

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

    Författare :Hanna Langels; Oskar Syrjä; [2021]
    Nyckelord :Hydrogen; hydrogen energy system; hydrogen production; hydrogen storage; large-scale storage; underground storage; vessels; LRC; hydrogen application; hydrogen strategies; hydrogen transition; offshore wind energy; electricity grid; electricity price; volatile electricity prices; renewable energy; hydrogen refueling station; hydrogen port; green hydrogen; hydrogen trucks; hydrogen forklifts; fuel cells; electrolysis; alkaline electrolyzer; PEM electrolyzer; levelized cost of hydrogen; LCOH; Vätgas; vätgassystem; vätgasproduktion; vätgaslagring; storskalig vätgaslagring; bergrum; vätgasapplikationer; vätgasstrategi; vätgasomställning; grön omställning; havsbaserad vindkraft; volatila elpriser; elnätet; förnybar energi; vätgastankstation; vätgasmack; vätgashamn; grön vätgas; vätgaslastbilar; vätgastruckar; bränsleceller; elektrolys; alkalisk elektrolysör; PEM elektrolysör;

    Sammanfattning : There has recently been an increased interest in hydrogen, both as a solution for seasonal energy storage but also for implementations in various industries and as fuel for vehicles. The transition to a society less dependent on fossil fuels highlights the need for new solutions where hydrogen is predicted to play a key role. LÄS MER

  5. 4. Logistics strategy optimization for offshore windfarms with power purchase agreement

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Aubin Pottier; [2021]
    Nyckelord :;

    Sammanfattning : Offshore wind is on the road to become commercially viable and competitive means for large-scale electricity production. This new industry is expected to occupy a major role in the energy transition. LÄS MER

  7. 5. Telescopic Tower Facilitating Installation of ≥12 MW Offshore Wind Turbines

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Martin Pettersson; [2020]
    Nyckelord :Installation of Offshore Wind Turbines; Telescopic Tower; Pin and Hole Jacking System; Friction Connection; Installation av vindkraftverk till havs; teleskopisk torn; hydraulisk jacksystem; friktionskoppling;

    Sammanfattning : The trend of offshore wind power is bigger and bigger wind turbines. Turbines are now becoming so big that existing installation vessels no longer are feasible and new bigger installation vessels are needed. LÄS MER