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Главная Архив Оргкомитет Будущие конференции American Society of Thermal and Fluids Engineering

ISBN : 978-1-56700-431-1 (Flash Drive)

ISBN : 978-1-56700-430-4

First Thermal and Fluids Engineering Summer Conference
2015, 9-12 August, New York City, USA

INVESTIGATION OF SUBCOOLED FLOW BOILING HEAT TRANSFER AT 1 ~ 3 BAR

Get access pages 1901-1907
DOI: 10.1615/TFESC1.mph.012795

Аннотация

Subcooled flow boiling experiments have been performed to obtain a better understanding of vapor bubble behavior under nucleation and entrainment by liquid flow. The main objective of this work is to obtain data to validate 3-D Interface Tracking Models and CFD models which can predict subcooled flow boiling phenomena in fuel assemblies of Pressurized Water Reactors (PWRs). In the experiment, the test section is a vertically oriented annulus of 6.35mm gap width with electrically heated inner rod with thermocouples embedded on the heated surface. Subcooled water at pressures from 1-3bar flowed upward through the test section under turbulent flow conditions. Liquid Reynolds numbers range between 26,000~55,000, with heat fluxes between 15~42kW/m2. The experiments yielded bubble size and directly measured wall temperature data. Measurements were taken using a high speed video camera with simultaneous temperature acquisition.
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