Sökning: "kallt"

Visar resultat 6 - 10 av 239 uppsatser innehållade ordet kallt.

  1. 6. Benchmarking a 1 kW hybrid hydrogen fuel cell system

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Jonathan Envall; [2023]
    Nyckelord :PEMFC; fuel cell; UAV; hybrid; Technology and Engineering;

    Sammanfattning : Unmanned Aerial Vehicles (UAV's) offer great versatility in the tasks that they may perform and they are today used in many sectors. The H24LEO project, administered by the Lund University School of Aviation, aims to develop and demonstrate a hybrid proton-exchange membrane fuel cell-powered UAV to aid in search and rescue operations performed by the Swedish Maritime Administration, and reduce the greenhouse gas emissions compared to similar work performed by helicopters. LÄS MER

  3. 7. EV battery temperature estimation : Designing a model for minimal temperature of high-voltage battery in a BEV

    Uppsats för yrkesexamina på grundnivå, Mittuniversitetet/Institutionen för data- och elektroteknik (2023-)

    Författare :Björn Arvidsson; [2023]
    Nyckelord :BEV; temperature estimation; lowpass filter; BEV; lågpassfilter; temperaturestimering;

    Sammanfattning : Fordonsindustrin är inne i ett skifte, där förbränningsmotorer (ICE) bör-jar fasas ut och det satsas mer på eldrift med hjälp av batterier (BEV).  I detta arbete, som efterfrågades av Volvo Cars, utvecklades en matema-tisk modell som uppskattar den lägsta temperaturen i en elbils högspän-ningsbatteri. LÄS MER

  4. 8. Ice Cold Urban Planning : A Literature Review on Challenges and Strategies in Designing Sustainable Winter Cities

    Kandidat-uppsats, KTH/Skolan för arkitektur och samhällsbyggnad (ABE)

    Författare :Carlos Huerta; Catrin Axelsson; [2023]
    Nyckelord :winter cities; sustainable urban planning; accessibility; transportation; winter trails; cold climate; urban design; snow management; literature review; vinterstäder; hållbar stadsplanering; tillgänglighet; transport; vinterleder; kallt klimat; urban design; vitstruktur; litteraturöversikt;

    Sammanfattning : Designing winter cities after the conditions of the winter weather entails unique challenges that require urban planning that is adapted to the specific conditions. One challenge is enabling transportation and accessibility despite heavy snowfall and slippery road surfaces. LÄS MER

  5. 9. Analysis to reduce ice-related production losses for wind turbines

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

    Författare :Jhason Paran De La Cruz; [2023]
    Nyckelord :Wind power; cold climate; wind turbine icing; ice losses; ice protection systems; blade heating; de-icing; analytical dashboard; data visualization.; Vindkraft; kalla klimat; nedisning av vindkraftverk; isförluster; isskyddssystem; uppvärmning av blad; avisning; analysverktyg; datavisualisering.;

    Sammanfattning : In the rapidly growing wind energy market, regions with cold climates are currently in the spotlight owing to their abundance of wind resources. However, the operation of wind turbines in cold climate conditions is challenged by serious icing problems. LÄS MER

  7. 10. Understanding the Building Processes of a Net-Zero Energy Building : A follow-up study on an energy effective campus building and interactions between the occupants and the smart HVAC system

    Master-uppsats, KTH/Hållbara byggnader

    Författare :Ajaysingh Patil; [2023]
    Nyckelord :;

    Sammanfattning : Net-Zero Energy Buildings (NZEBs) have emerged as a result of rapid advancements in the construction industry and the growing demand forsustainable buildings. However, this progress has led to a potential gap in information dissemination between policy makers and buildingprofessionals. LÄS MER