Sökning: "water-jet"

Visar resultat 1 - 5 av 34 uppsatser innehållade ordet water-jet.


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

    Författare :Claudia Andruetto; [2019]
    Nyckelord :electric boat; rescue sector; boating; drive train modelling; water jet; fuel cells; batteries; hybrid electric storage; sustainability; CO2 emissions; life cycle assessment;

    Sammanfattning : Progressing constraints on green house gas emissions lead to a sustainability trend,which greatly a↵ects the transport sector. Nowadays, companies show increasing interest indeveloping sustainable solutions. LÄS MER

  2. 2. Investigation of the heat transfer of enhanced additively manufactured minichannel heat exchangers

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

    Författare :Hamidreza Rastan; [2019]
    Nyckelord :Minichannel; Microchannel; Heat exchanger; Additive manufacturing; 3D printing; Numerical simulation; CFD; Comsol;

    Sammanfattning : Mini-/microchannel components have received attention over the past few decades owing to their compactness and superior thermal performance. Microchannel heat sinks are typically manufactured through traditional manufacturing practices (milling and sawing, electrodischarge machining, and water jet cutting) by changing their components to work in microscale environments or microfabrication techniques (etching and lost wax molding), which have emerged from the semiconductor industry. LÄS MER

  3. 3. Användarcentrerad utvärdering samt utveckling av ett larmsystem för vattenjet-propulsor

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för visuell information och interaktion

    Författare :Astrid Heed; [2019]
    Nyckelord :Larm; Larmssystem; Visuell presentation; Situationsmedvetenhet; Naturligt Beslutsfattande;

    Sammanfattning : The purpose of this master thesis is to investigate how alarm systems and their visualizations, as well as signals affect work situations and decision making processes aboard vessels with water jet propulsion. Furthermore, this study aims to identify important aspects of the perception of alarm systems and which aspects that are more or less affected by stress, lack of information as well as audible and visual signals. LÄS MER

  4. 4. Rim-Jet - A Mechanical Design for a Shaft-less Propulsor

    Master-uppsats, KTH/Maskinkonstruktion (Avd.)

    Författare :Pablo Sanchez Santiago; [2019]
    Nyckelord :Conceptual design; debris; propulsor; rescue operations; verify; Driftsäkerhet; framdrivning; propulsor; räddningsbåt; Sjöräddning;

    Sammanfattning : During sea rescue operations it is common for the rescue vessels to operate in water with high number of debris that can get stuck in the propulsor. In particular plastic ropes that can get tangled around the shaft and melt causing a complete stop or damage the motor. LÄS MER

  5. 5. Layout of spillway aerator air ventsand its effect on air supply

    Master-uppsats, KTH/Mekanik

    Författare :Gustav Daggenfelt; [2017]
    Nyckelord :;

    Sammanfattning : Chute aerators are constructed to protect spillways from cavitation damage.They function by launching the water ow as a jet and supplying airunderneath since having air entrained into the water is an eective way tomitigate cavitation. LÄS MER