Sökning: "departure from nucleate boiling"

Hittade 3 uppsatser innehållade orden departure from nucleate boiling.

  1. 1. Undersökning av ledarkonstruktion vid bränsletest : Teoretisk konceptframtagning av ledarkonstruktion

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Industriell teknik

    Författare :Sebastian Skans; [2022]
    Nyckelord :bränslestavar; critical heat flux; departure from nucleate boiling; kärnkraft; värmeledning;

    Sammanfattning : In nuclear power plants, during operation at high temperatures, there can occur a steam build-up around the fuel rods at an increasing rate. This inhibits the water’s effectivity in removing heat from the rods. When this occurs and reaches a critical point, the temperature in the fuel rods surges, which can lead to them being damaged. LÄS MER

  3. 2. Feasibility study on Thermal Anemometry at LWR conditions

    Master-uppsats, KTH/Fysik

    Författare :Abishek Baskar; [2021]
    Nyckelord :Nuclear Enginnering; Thermal-Hydraulics; Instrumentation; Material technology; Fluid Dynamics. Light water reactors;

    Sammanfattning : Dryout and Departure from Nucleate boiling (DNB) are utmost thermal-hydraulic concerns for the safety of LWRs. The behavior of two-phase flows at these conditions is still not fully understood. There is at least a need for a good local velocity and void fraction database at these conditions. LÄS MER

  4. 3. Bubble Dynamics on Artificial Nucleation Sites in Boiling Heat Transfer

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

    Författare :Yuqing Zhang; [2021]
    Nyckelord :;

    Sammanfattning : Pool boiling heat transfer is a complicated scientific problem due to the complex phase change process. In recent years, with the development of nuclear technology, microelectronics and space exploration, more attention has been paid to boiling which present great potentials for the thermal management in these applications because nucleate boiling has much better heat transfer performance than single-phase fluid, while bubbles, including their departure frequency and diameter and the interaction between bubbles plays an important role in determination of the heat transfer performance. LÄS MER