Sökning: "thermal margins"

Visar resultat 1 - 5 av 18 avhandlingar innehållade orden thermal margins.

  1. 1. On-line monitoring of thermal margins at Ringhals 2

    Författare :Tell Andersson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; movable detectors; DNB-margin; core monitoring; power peaking factors; SCPORPIO on-line core simulator; gamma thermometers; power distribution; fixed in-core detectors; nuclear instrumentation;

    Sammanfattning : .... LÄS MER

  3. 2. Experimental and theoretical study of post-dryout heat transfer in annuli with flow obstacle

    Författare :Ionut Anghel; Henryk Anglart; Dariusz Mikielewicz; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; annulus; flow obstacles; critical heat flux; post-dryout; thermal margins; boiling water reactor; Fysik; Physics;

    Sammanfattning : An experimental study on post dryout heat transfer regime in annuli with flow obstacles wasconducted in the High-pressure Water Test (HWAT) loop at the Royal Institute of Technologyin Stockholm, Sweden. An annulus with flow obstacles, consisting of two concentric heatedpipes (12.7x24. LÄS MER

  4. 3. Investigation of the use of thorium in LWRs for improving reactor core performance

    Författare :Cheuk Wah Lau; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thorium; thermal margin; light water reactor;

    Sammanfattning : Thorium is a fertile material and most of the past research has focused on breeding thorium into fissile material to achieve a more sustainable use of nuclear power. However, the focus in this report is on using thorium to improve reactor core performance. LÄS MER

  5. 4. The influence of Morphology on the Transport and Mechanical Properties of Polyethylene

    Författare :Bereket Neway; KTH; []
    Nyckelord :n-hexane diffusion; polyethylene; free volume; solubility; sorption; desorption; mechanical properties; orientation; thermal properties; blend;

    Sammanfattning : The sorption/desorption behaviour of n-hexane in high molarmass linear polyethylene (PE) and branched PEs with 0.39 and5.09 hexyl branches per 100 main chain C atoms andcrystallinities between 4 and 82% at 298 K has been studied.Crystal core contents determined by Raman spectroscopy werealways lower than those determined by density measurements. LÄS MER

  7. 5. Palaeosurfaces and palaeovalleys on North Atlantic previously glaciated passive margins : reference forms for conclusions on uplift and erosion

    Författare :Johan M. Bonow; Karna Lidmar-Bergström; Clas Hättestrand; Jens-Ove Näslund; Mats Olvmo; Adrian Hall; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; palaeosurface; palaeovalley; uplift; valley; incision; glacial erosion; weathering; Neogene; southern Norway; West Greenland; Earth sciences; Geovetenskap;

    Sammanfattning : Palaeosurfaces and palaeovalleys are landforms under destruction in the present climate and/or tectonic regime, and thus mainly reflect processes not active today. Uplifted palaeosurfaces exist along the formerly glaciated passive continental margins around the North Atlantic. LÄS MER