Sökning: "poor cooling performance"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden poor cooling performance.

  1. 1. Thermal Modeling and Simulationwith High Voltage Solid StateRelays for Battery DisconnectionApplications : The potential of replacing mechanical contactors with semiconductors

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :David Radisic; Johan Mårtensson; [2023]
    Nyckelord :SSR; SSCB; SiC MOSFET; BEV; Pre-charge; Solid-state relay; Solid-state circuit breaker; Electric vehicles; DC fast-charge; Simulink; BDU;

    Sammanfattning : The swift shift of the automotive industry towards electrification is primarily propelled by technological advancements in battery technology. To stay competitive and meet the new demands of the industry, there is a crucial need for novel ideas and innovation. LÄS MER

  3. 2. Förändrad energianvändning i en kontorsbyggnad i Gävle till följd av covid-19-pandemin : En fallstudie

    Kandidat-uppsats, Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskap

    Författare :Erica Larsson Lundh; [2021]
    Nyckelord :energy consumption; building energy performance; office building; occupancy; covid-19; teleworking; energikonsumtion; energiprestanda; kontorsbyggnad; personlast; covid-19; distansarbete;

    Sammanfattning : Since COVID-19 was declared a pandemic by the World Health Organization(WHO) in March 2020, teleworking, or working from home, has been used to an increasing extent by companies and organisations all over the world. Evidence suggests that teleworking will become part of “the new normal”, why teleworking-related research will be of value in a long-term perspective. LÄS MER

  4. 3. Techno-Economic Analysis of Solar Photovoltaic and Heat Pump Systems for a North Macedonian Hospital

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

    Författare :Francisco Beltran; Lesley Fisher; [2019]
    Nyckelord :ground source heat pump; air source heat pump; ice thermal energy storage.;

    Sammanfattning : The International Energy Agency’s Global Status Report 2017 estimates that existing buildings must undergo deep energy renovations, which reduce the energy intensity of buildings by 50% - 70% in order to achieve the “Beyond 2°C” scenario [1]. Many buildings in Bitola, The Republic of North Macedonia, will need considerable upgrades to meet these goals. LÄS MER

  5. 4. An experimental study of surface coatings to limit the impact of frosting

    Master-uppsats, KTH/Energiteknik

    Författare :Carl Andersson; [2018]
    Nyckelord :;

    Sammanfattning : Heat pumps are commonly used as a way to efficiently meet heating demands. The efficiency and flexibility of Air-source heat pumps (ASHPs) have improved in recent years and is an attractive heating solution suitable for houses with lower heating demands, as it is inexpensive to purchase and install compared to other heating solutions. LÄS MER

  7. 5. CFD Analysis of Cold Stage Centrifugal Pump for Cooling of Hot IsostaticPress with Validation Case Study

    Master-uppsats, KTH/Mekanik

    Författare :Shane Hereford; [2017]
    Nyckelord :CFD; HIP; Quintus Technologies; Centrifugal pump; pump curve;

    Sammanfattning : Hot isostatic pressing (HIPing) has been a growing material treatment process for performance part manufacturingfor over 50 years. This process of using an inert gas at high temperature and pressure to densifymaterials leads to vastly improved material properties by removing pores and other micro- aws. LÄS MER