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Experimental investigation on heat transfer in transient boiling

Visentini, Roberta and Colin, Catherine and Ruyer, Pierre Experimental investigation on heat transfer in transient boiling. (2012) In: ECI 8th International Conference on Boiling and Condensation Heat Transfer, 3 June 2012 - 7 June 2012 (Lausanne, Switzerland).

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Official URL: http://dx.doi.org/10.1115/HT2012-58245

Abstract

During reactivity initiated accidents in a core of a nuclear reactor, a power excursion occurs on some fuel rods. The consequent rapid boiling is a matter of study for the nuclear power plants safety evaluation, because of the risk for rod-clad failure. In order to better understand the influence of power excursions and to characterise the phases of the rapid boiling phenomenon, an experimental set-up has been built at IMFT. The test section is a semi annulus. The inner half cylinder is made of a stainless steel foil, heated by Joule effect. Its temperature is measured by an infrared camera filming the backside of the foil, coupled with a high-speed camera for the visualisation of the phenomena. Measurements were made for two types of tests: when a square current signal is applied to the foil and when the current output follows a triangular shape. These measurements showed the influence of both shape and value of the supplied power and of the temperature increase rate on the wall temperature during boiling.

Item Type:Conference or Workshop Item (Paper)
Additional Information:ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. Volume 1: Heat Transfer in Energy Systems; Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat and Mass Transfer in Biotechnology; Environmental Heat Transfer; Visualization of Heat Transfer; Education and Future Directions in Heat Transfer Rio Grande, Puerto Rico, USA, July 8–12, 2012. Conference Sponsors: Heat Transfer Division ISBN: 978-0-7918-4477-9
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut de Radioprotection et de Sûreté Nucléaire - IRSN (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Catherine COLIN
Deposited On:13 Dec 2013 08:36

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