Sökning: "HRR"

Visar resultat 1 - 5 av 13 uppsatser innehållade ordet HRR.

  1. 1. Brandfarliga vätskor i syrereducerade miljöer

    Kandidat-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Carl Nilsson; Max Hersner; [2021]
    Nyckelord :Hypoxic air; Brandfarliga vätskor; Reduced oxygen; Limiting oxygen; Cone calorimeter; Flammable liquids; ORS; LOC; CACC; Heat release rate; Mass loss rate; Technology and Engineering;

    Sammanfattning : Unmanned warehouses are increasing in number as workers are replaced by automated robotic systems. This type of facility, among others, is well suited for an oxygen reduction system for fire protection. By lowering the oxygen concentration, the risk of fire propagation is reduced and might be hindered altogether. LÄS MER

  2. 2. Techno-economic assessment of CO2 refrigeration systems with geothermal integration : a field measurements and modelling analysis

    Master-uppsats, KTH/Energisystem

    Författare :Fabio Giunta; [2020]
    Nyckelord :CO2 Refrigeration; Supermarkets; Heat Recovery; Geothermal Storage; Energy Efficiency; Boreholes; Techno-Economic Assessment;

    Sammanfattning : Several CO2 transcritical booster systems in supermarkets use the potential of integrating geothermal storage, enabling subcooling during warm climate conditions as well as being a heat source during cold climate conditions. First of all, field measurements of one of these systems located in Sweden were analysed with particular focus on the heat-recovery performance. LÄS MER

  3. 3. Can internal and external load measures via Polar Vantage V predict training status in trained individuals? : - A prospective study during a normal and a heavy load training week.

    Magister-uppsats, Umeå universitet/Avdelningen för idrottsmedicin

    Författare :Jens Offerman; [2019]
    Nyckelord :Acute:chronic load ratio; POMS; Heart-rate recovery; Running Index;

    Sammanfattning : Purpose To evaluate the information provided by Polar Vantage V, a new generation of heart rate monitor/watch (HRM-watch) to the user, regarding the acute:chronic load ratio (ACLR), based onthe external and internal load measures and examine the measures against psychological and physiological measures before and during a threshold test with VO2max testing. Method A five-week prospective study with results and data collected during and after four normal training weeks and during a fifth week with a very high training load. LÄS MER

  4. 4. Comparing a full scale test with FDS, FireFOAM, McCaffrey & Eurocode

    Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Byggkonstruktion och brand; Luleå tekniska universitet/Byggkonstruktion och brand

    Författare :Erik Edin; Mattias Ström; [2019]
    Nyckelord :FDS; FireFOAM; OpenFOAM; Performance-Based Design; Localized fire.;

    Sammanfattning : In the rapidly growing field of CFD-calculations (Computational Fluid Dynamics), companies and organizations are bringing forth new tools, tools that display an image of a given fire scenario. These tools are developed because they provide time efficiency as well as a sustainable economic approach. LÄS MER

  5. 5. HEART RATE RECOVERY IN EXHAUSTION DISORDER : quadratic vagal interaction predicting work ability?

    Magister-uppsats, Umeå universitet/Institutionen för psykologi

    Författare :Anna Sandgren; [2019]
    Nyckelord :Exhaustion disorder; ED; Burnout; Heart rate recovery; HRR; gastrointestinal; work ability; Exhaustion disorder; ED; Burnout; Heart rate recovery; HRR; gastrointestinal; work ability;

    Sammanfattning : Exhaustion disorder (ED) is a Swedish criteria-based medical diagnosis related to burnout, that often requires long term rehabilitation and sick leave. Comorbidity of functional gastrointestinal (GI) problems and ED has been reported and may be mediated by dysregulated vagal function. LÄS MER