Studies on steam condensation and particle diffusiophoresis in a heat exhanger tube

Kari Lehtinen, Jouni Hokkinen, Ari Auvinen, Jorma K. Jokiniemi (Corresponding Author), Robert E. Gamble

    Research output: Contribution to journalArticleScientificpeer-review

    21 Citations (Scopus)

    Abstract

    In this paper, studies on steam condensation and aerosol behaviour in a heat exchanger are presented.
    The heat exchanger is a model of one single tube of a Passive Containment Condenser (PCC) that is used in the European Simplified Boiling Water Reactor (ESBWR). A hot carrier gas containing nitrogen and steam with Ag and CsOH particles flows through the heat exchanger.
    The walls of the heat exchanger are cooled with a water jacket, thus causing steam condensation and diffusiophoretic particle deposition. The amount of condensed steam is measured, as well as the temperatures, particle mass concentrations and size distributions before and after the heat exchanger.
    The experiments are done with different proportions of steam and nitrogen in the carrier gas. Heat and mass transfer in the system are modelled with well known engineering correlations, producing results that agree nicely with the experimental results.
    The diffusiophoretic particle deposition velocity is shown to be proportional to the steam condensation rate, as expected.
    Original languageEnglish
    Pages (from-to)67-77
    JournalNuclear Engineering and Design
    Volume213
    Issue number1
    DOIs
    Publication statusPublished - 2002
    MoE publication typeA1 Journal article-refereed

    Keywords

    • boiling water reactors
    • aerosol dynamics
    • aerosols
    • heat exchanger
    • nuclear reactors

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