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ISSN Online: 2377-424X

International Heat Transfer Conference 12
August, 18-23, 2002, Grenoble, France

Interfacial Transport Phenomena and Stability in Liquid-Metal/Water

Get access (open in a dialog) DOI: 10.1615/IHTC12.4260
6 pages

要約

One concept being considered for steam generation in innovative nuclear reactor applications and for highly efficient and compact heat exchangers, involves water coming into direct contact with a circulating molten metal. The vigorous agitation of the two fluids, the direct liquid/liquid contact and the consequent large interfacial area give rise to very high heat transfer coefficients and rapid steam generation. For an optimum design of such direct contact heat exchange and vaporization systems, detailed knowledge is necessary of the various flow regimes, interfacial transport phenomena, heat transfer and operational stability. This paper discusses experiments currently being conducted at the University of Wisconsin - Madison (UW) and Argonne National Laboratory (ANL) to determine the heat transfer associated with water injection into a static molten metal pool. The use of level swell and temperature distribution measurements by ANL provide information on the volumetric heat transfer coefficient within a 1-D system. The measurements can then be compared with X-ray imaging techniques used at UW in a 2-D experimental system to determine the void volume, volumetric heat transfer coefficient and estimate the interfacial area and the average heat transfer coefficients in the molten metal pool. Details of the experiments will be discussed and compared to past data.