Sökning: "Bränsleceller"

Visar resultat 1 - 5 av 70 uppsatser innehållade ordet Bränsleceller.

  1. 1. Investigating the dynamics between the developing Nordic hydrogen market and the electricity system under uncertainty

    Master-uppsats, KTH/Energiteknik

    Författare :Timon Renzelmann; [2024]
    Nyckelord :energy modelling; energy storage; global sensitivity analysis; hydrogen; Method of Morris; Nordics; OSeMOSYS; uncertainty analysis; energimodellering; energilagring; global känslighetsanalys; vätgas; Morris-metoden; Nordiska länder; OSeMOSYS; osäkerhetsanalys;

    Sammanfattning : The potential of hydrogen as a clean energy carrier is hotly debated, but it promises to significantly contribute to a sustainable energy future. Hydrogen can replace fossil fuels in carbon-intensive industries, heavy transport and aviation, and support a renewable energysystem by acting as energy storage to balance intermittent supply. LÄS MER

  3. 2. Framtidens användning av reservelverk inom eldistribution : En fallstudie på E.ON Energidistribution

    Master-uppsats, Linköpings universitet/Energisystem

    Författare :Gino Lauschke; Isabelle Olsson; [2023]
    Nyckelord :Reservelverk; Reservkraft; Dieselgeneratorer; Batterier; Bränsleceller; HVO; Eldistribution;

    Sammanfattning : Sweden has ambitious climate targets to achieve net zero emissions by 2045. One of the possiblesolutions to achieve this goal is electrification, and electricity use is expected to increase from today's 140 TWh to 170-282 TWh, according to the Swedish Energy Agency's different scenarios. LÄS MER

  4. 3. Tools and Challenges in Evaluating Control Surface Airworthiness for a Blended-Wing-Body UAV

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Anton Åkesson; [2023]
    Nyckelord :;

    Sammanfattning : For transport aeroplanes the Blended-Wing-Body (BWB) configuration shows promise in improving aerodynamic efficiency. The Green Raven project strives to demonstrate hydrogen fuel-cell-electric propulsion on a 4 m wingspan BWB. LÄS MER

  5. 4. The effect of material properties on PEM fuel cell catalysts on durable oxidation reduction activity

    Master-uppsats, KTH/Kemiteknik

    Författare :Xiaoling Jiang; [2023]
    Nyckelord :PEM fuel cell; catalyst; ORR activity; particle size; degradation; PEM-bränslecell; katalysator; syrgasreduktionsaktivitet; partikelstorlek; åldring;

    Sammanfattning : I detta examensarbete utforskas påverkan av partikelstorleken hos Pt-katalysatorer på kolbärare på syrereduktionen i polymerelektrolytmembran (PEM)-bränsleceller. Den elektrokemiskt aktiva ytarean, aktiviteten för syrereduktion och tillhörande degraderingshastigheter för de undersökta katalysatorerna beräknas och jämförs. LÄS MER

  7. 5. Numerical modeling of airflow on the cathode-side of a bipolar flow plate : How the formed geometry affects the pressure drop and flow distribution in a hydrogen fuel cell

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Olivia Johansson; [2023]
    Nyckelord :Performance; Cross-sectional geometry; Computational fluid dynamics;

    Sammanfattning : Climate change and rising temperatures is a well-known problem. To tackle global warming a transition from fossil fuels to renewable and reliable energy sources is necessary. Hydrogen, in fuel cells, is proposed to replace diesel and gasoline in the transport sector. LÄS MER