Abstract
Interaction of subcooled water with saturated steam in horizontal tube can produce so-called condensation induced water hammers, which may be dangerous for integrity of NPP equipment. This phenomenon has been investigated at the special test facility developed at Electrogorsk Research and Engineering Center. Test section of the test facility is horizontal tube of inner diameter of 64 mm and a length of 3 m. It has been performed several experimental runs, where subcooled water was supplied to the end of the tube filled by saturated steam. Another end of the tube was connected to separator vessel. System pressure, water subcooling and water flow rate were variable parameters. There were a lot of condensation induced water hammers, observed during experiments. Experimental data have been analysed with thermal-hydraulic codes WAHA and RELAP5, based on two-phase, two-fluid model.
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