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Heat Transfer Research
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ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v35.i56.20
9 pages

Physical Model of Thermal Hydraulic Self-Oscillations in Vapor Condensation Inside a Pipe

Nikolay A. Pribaturin
Kutateladze Institute of Thermophysics, Acad. Lavrentiev ave., 1, Novosibirsk, Russia; Nuclear Safety Institute, Novosibirsk Branch, Acad. Lavrentiev ave., 1, Novosibirsk, Russia
Sergey I. Lezhnin
Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk State University, Novosibirsk, 630090, Russia
Vladimir A. Fedorov
Research and Innovation Joint-Stock Company "Turbocon", Kaluga Turbine Plant, 255, Moskovskaya Street, Kaluga, 248021, Russia; Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

RÉSUMÉ

The appearance of pressure oscillations in complete water vapor condensation inside a pipe, the outer surface of which is intensely cooled by cold water, is analyzed. The experiments with a model one-tube heat exchanger and industrial condenser are carried out. The existence of two modes of pressure oscillations is found. It has been established that the frequencies of these modes depend on an inclination of the channel to the horizon, heat flux density, presence of a noncondensed gas, and static pressure. The physical model of the occurrence of pressure oscillations has been developed. The qualitative agreement between the experiment and calculation is shown.


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