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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

NATURAL CIRCULATION IN AN EXPERIMENTAL FACILITY SCALED FROM A PRESSURIZED WATER REACTOR

Get access (open in a dialog) DOI: 10.1615/IHTC7.3570
pages 493-498

Résumé

Results from an experimental investigation of natural circulation in the Semiscale Mod-2A system are presented. From the experimental results, including visual observation, the characteristics of three modes of natural circulation have been quantified. The three natural circulation modes are single-phase, two-phase, and reflux. The various modes of natural circulation were induced in the Mod-2A system by controlling system mass inventory, core power, and steam generator secondary pressure. The transitions between the various modes of natural circulation as a function of system mass inventory and core power are presented. The Semiscale experiments were run with high temperature and pressure water (6.2 to 12.4 MPa). Experimental results were found to compare favorably with RELAP5 computer code calculations.