Pool Boiling in Subcooled Sodium at Atmospheric Pressure
- 1 February 1974
- journal article
- research article
- Published by Taylor & Francis in Nuclear Science and Engineering
- Vol. 53 (2) , 240-254
- https://doi.org/10.13182/nse74-a23347
Abstract
Transient, natural-convection pool boiling from spheres to subcooled sodium was studied. Hot tantalum spheres were submerged in sodium, and the surface temperature of the sphere was recorded, together with the pressure pulses which developed due to vapor growth and collapse. The experimental data were reduced by numerically solving the heat conduction equation in the sphere, the end result being the boiling curves of sodium. The following range of variables was investigated: sodium temperature—392 to 1607°Fsphere temperature—2785 to 4281°Fsphere diameters—1.0, 0.75, and 0.50 in.sodium depth—3.0 and 4.5 in. pressure—atmospheric. This investigation showed that sodium subcooling has a large effect on the transient boiling curve. The initial sphere temperature did not have an appreciable effect on the boiling curve as long as the initial regime was film boiling. An effect of changing the sphere diameter was observed only in the film boiling region. The experimental data in the film boiling region are ...Keywords
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