Sökning: "Transientanalys"

Hittade 5 uppsatser innehållade ordet Transientanalys.

  1. 1. MODELLING OF HEAT TRANSFER OF RAILWAY SWITCH HEATING

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

    Författare :Siddharth Suresh Sumathi; [2023]
    Nyckelord :Conjugate Heat transfer analysis; transient analysis; CFD; insulation; measurement data uncertainties.; Konjugat Värmeöverföringsanalys; transientanalys; CFD; isolering; mätdata osäkerheter.;

    Sammanfattning : Switches and crossings are vital components of the railway network. Obstacles to the smooth functioning of these components could result in delays and network traffic. Given the geographical location of Sweden, snow is one of the major obstacles for the switches. LÄS MER

  3. 2. Monte Carlo analysis of BWR transients : A study on the Best Estimate Plus Uncertainty methodology within safety analyses at Forsmark 3

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad kärnfysik

    Författare :Jonathan Eriksson; [2023]
    Nyckelord :BEPU; Wilks; Uncertainty analysis; BISON; Monte Carlo; BWR; Osäkerhetsanalys; transientanalys; Forsmark;

    Sammanfattning : Transient analyses at Forsmark nuclear power plant are currently performed using realistic computer models in conjunction with conservative estimates of initial- and boundary conditions. This is known as the combined methodology. LÄS MER

  4. 3. Energy Usage in Railway Wayside Object Heating : Modeling of melting of Ice, Estimation of heating power requirement in Switch and Renewable energy feasibility for a Railway system

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

    Författare :Sidharth Kapoor; [2022]
    Nyckelord :Melting of Ice; Numerical modeling; Transient conjugate heat transfer; Transient analysis; CFD; Switch heating; Heat pumps in Railways; Issmältning; Numerisk modellering; Transient värmeöverföring; Transientanalys; CFD; Värmepumpar i järnvägar;

    Sammanfattning : Trafikverket operates about 12000 Switches and crossings (SnCs) of which 6800 are equipped with an electrical heating system of 10−30kW power to keep SnCs functional throughout the winters by keeping them free of Snow/Ice. The energy consumption is approximately 200−130GWh/year costing approximately 10−15 million Euros annually. LÄS MER

  5. 4. Transientanalys för Forsmark block 2 och 3 : Studie av hur val av driftpunkt och pumpreglering påverkar torrkokningsgränsvärdet

    Uppsats för yrkesexamina på avancerad nivå, Tillämpad kärnfysik

    Författare :Jonas Isaksson; [2011]
    Nyckelord :forsmark; torrkokning; transientanalys;

    Sammanfattning : The dry out criterion (MCPR) has been calculated for the most limiting H2-events for Forsmarks unit 2 and 3, at operating points that are normally not analyzed before each cycle. The operating points that normally are regarded as the ones with the lowest margin to dry out are the ones where the thermal power is the highest at agiven recirculation flow. LÄS MER

  7. 5. Transientanalys

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Jörgen Bengtsson; [1991]
    Nyckelord :Technology and Engineering;

    Sammanfattning : When measuring transient behaviour in descrete time, limitations in memory size impose truncation errors on the computations performed in the subsequent analysis of data. In this paper different approached to minimize or avoid these errors are investigated... LÄS MER