Sökning: "LFR"

Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet LFR.

  1. 1. Validation and Application of CFD to Safety-Related Phenomena in Lead-Cooled Fast Reactors

    Författare :Marti Jeltsov; Pavel Kudinov; Walter Villanueva; Dmitry Grishchenko; Afaque Shams; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Verification; Validation; Calibration; Sensitivity Analysis; Uncertainty Analysis; CFD; STH; Code Coupling; Liquid Lead Coolant; LFR; SGTL R; Bubble transport; Core voiding; Seismic Sloshing; Melting Solidification; Physics; Fysik;

    Sammanfattning : Carbon-free nuclear power production can help to relieve the increasing energy demand in the world. New generation reactors with improved safety, sustainability, reliability, economy and security are being developed. Lead-cooled fast reactor (LFR) is one of them. LÄS MER

  3. 2. Development of a Methodology for Detecting Coolant Void in Lead-cooled Fast Reactors by Means of Neutron Measurements

    Författare :Peter Wolniewicz; Håkansson Ane; Christian Jammes; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LFR; fission chamber; nuclear; reactor; leak; criticality;

    Sammanfattning : In a lead-cooled fast reactor (LFR), small bubbles (in the order of one mm or less) may enter the coolant from a leaking steam generator. If such a leakage is undetected the small bubbles may eventually coalesce into a larger bubble in local stagnation zones under the active core. LÄS MER

  4. 3. Modeling of Energy-Efficient Robots for Lightweight, High Volume Assembly : Concepts and Optimization

    Författare :Sten Grahn; Björn Langbeck; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Commercial and environmental demands put constant pressure on robot manufacturers to improve the efficiency of the robots they produce. Satisfying answers to efficiency questions can have a major impact on both manufacturers and users. LÄS MER

  5. 4. A feasibility study of coolant void detection in a lead-cooled fast reactor using fission chambers

    Författare :Peter Wolniewicz; Nils Sandberg; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; neutron monitoring spectrum fast reactor fission chamber coolant void; Applied Nuclear Physics; Tillämpad kärnfysik;

    Sammanfattning : One of the future reactor technologies defined by the Generation-IV International Forum (GIF) is the Lead-Cooled Fast Reactor (LFR). An advantage with this reactor technology is that steam production is accomplished by means of heat exchangers located within the primary reactor vessel, which decreases costs and increases operational safety. LÄS MER

  7. 5. Corrosion resistant alumina-forming alloys for lead-cooled reactors

    Författare :Jesper Ejenstam; Inger Odnevall Wallinder; Il Soon Hwang; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kemi; Chemistry;

    Sammanfattning : Generation IV nuclear power technologies provide attractive solutions to the common issues related to conventional nuclear power plants currently in operation worldwide. Through a significant reduction of the long-term radiotoxicity of nuclear waste, a more efficient use of nuclear fuel resources, and implementation of inherent safety features, Generation IV will make nuclear power sustainable and thus increase the public acceptance of nuclear power. LÄS MER