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EXPERIMENTAL INVESTIGATION OF CRITICAL HEAT FLUX IN ANNULUS AT LOW PRESSURE AND LOW FLOW PARAMETERS

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F20%3APU138457" target="_blank" >RIV/00216305:26220/20:PU138457 - isvavai.cz</a>

  • Alternative codes found

    RIV/68407700:21340/20:00345754

  • Result on the web

    <a href="https://ojs.cvut.cz/ojs/index.php/APP/article/view/6916" target="_blank" >https://ojs.cvut.cz/ojs/index.php/APP/article/view/6916</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.14311/APP.2020.28.0050" target="_blank" >10.14311/APP.2020.28.0050</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    EXPERIMENTAL INVESTIGATION OF CRITICAL HEAT FLUX IN ANNULUS AT LOW PRESSURE AND LOW FLOW PARAMETERS

  • Original language description

    Steady state flow boiling experiments were conducted on a technically smooth Inconel 625 tube with outer diameter 9.1 mm at inlet pressures 131, 220 and 323 kPa, inlet temperatures 62, 78 and 94 °C and approximately 400, 600 and 1000 kg/(m2.s) mass flow. Water of these parameters was entering into the vertically aligned annulus, where the uniformly heated tube was placed until the critical heat flux (CHF) appeared. The experimental data were compared to estimations of CHF by local PGT tube correlation and Groeneveld’s look-up tables for tubes. The results imply that in the region of low pressure and low mass flux, the differences between calculations and experiments are substantial (more than 50 % of CHF). The calculations further imply that look-up tables and tube correlations should be corrected to the annulus geometry. Here, the Doerffer’s approach was chosen and led to a substantial enhancement of CHF estimation. Yet, a new correlation for the region of low pressure and flow is needed.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Result continuities

  • Project

    <a href="/en/project/LTAUSA18198" target="_blank" >LTAUSA18198: ADAR - Accelerator Driven Advanced Reactor</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    ŠIMÁNĚ 2020: Student Conference on Nuclear Engineering

  • ISBN

    978-80-01-06794-9

  • ISSN

    2336-5382

  • e-ISSN

  • Number of pages

    9

  • Pages from-to

    50-58

  • Publisher name

    Czech Technical University in Prague

  • Place of publication

    Praha

  • Event location

    ČVUT v Praze

  • Event date

    Jun 23, 2020

  • Type of event by nationality

    EUR - Evropská akce

  • UT code for WoS article