Sökning: "short trains"

Visar resultat 1 - 5 av 43 uppsatser innehållade orden short trains.

  1. 1. Development of CAD Models for Large Silencer Platforms Using Design Automation

    Master-uppsats, Linköpings universitet/Produktrealisering

    Författare :Mahim Kai; Balagangadar Thilakar Arumugam; [2023]
    Nyckelord :Design Automation; Silencer; CFD; Extraction;

    Sammanfattning : Scania is known as a front-runner in the development of power trains for heavy vehicles, marine, and general industrial applications. As the regulations on emissions for combustion engine vehicles are getting tougher with increasing awareness on sustainable solutions and reducing environmental impact, the goal at Scania is to develop combustion engines to achieve low-pollutant emissions whilst achieving higher efficiency. LÄS MER

  3. 2. Predicting Short-term Absences of a Railway Crew using Historical Data

    Master-uppsats, KTH/Matematisk statistik

    Författare :Agnes Björnfot; Sandra Fjelkestam; [2023]
    Nyckelord :statistics; machine learning; absence prediction; random forest; XGBoost; quantile regression; statistik; maskininlärning; frånvaroprognoser; random forest; XGBoost; kvantilregression;

    Sammanfattning : Transportation via train is considered the most environmentally friendly way of traveling and is widely seen as the future of transportation. Canceled and delayed trains worsen customer satisfaction; thus, punctual trains are crucial for railway companies. LÄS MER

  4. 3. 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

  5. 4. Optimization of comfort-related energy and thermal comfort for commuter trains : A case study of Stockholm commuter trains

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

    Författare :Jimmy Lidén; [2023]
    Nyckelord :Energy efficiency; thermal comfort; commuter train; ventilation; cooling; heating; energy utilization; case study; temperature; transient; Energieffektivitet; termisk komfort; pendeltåg; ventilation; kyla; värme; energianvändning; fallstudie; temperatur; transient;

    Sammanfattning : Today, energy efficiency is an increasingly important question in which progress is accelerating. One of the high electricity demand energy users is public transport. In addition, passenger satisfaction with thermal comfort is an important parameter. LÄS MER

  7. 5. Är pendeltågens stopp för långa : - En studie av Stockholms pendeltågs uppehållstider .

    Kandidat-uppsats, KTH/Transportplanering

    Författare :JONAS KENNERÖ; [2023]
    Nyckelord :: dwell time; commuter trains; Stockholm Odenplan; Årstaberg; platform doors; train conductor; delays; short trains; rush hour; behavior of travelers; observational study; linear regression.;

    Sammanfattning : An important aspect during the planning of commuter trains is how long they will be waiting at the platform. All travelers must be able to board and get off the train in time while the process cannot take too long. LÄS MER