Transient modelling of a natural circulation loop under variable pressure
Keywords:
natural circulation, natural circulation loop, self-pressurizationAbstract
The objective of the present work is to model the transient operation of a natural circulation loop, which is one-tenth scale in height to a typical Passive Residual Heat Removal system (PRHR) of an Advanced Pressurized Water Nuclear Reactor and was designed to meet the single and two-phase flow similarity criteria to it. A long transient characterized the loop operation, during which a phenomenon of self-pressurization, without self-regulation of the pressure, was experimentally observed. This represented a unique situation, named natural circulation under variable pressure (NCVP). The self-pressurization was originated in the air trapped in the expansion tank and compressed by the loop water dilatation, as it heated up during each experiment.References
VIANNA, A. L. B., FACCINI, J. L. H., SU, J., Transient modelling of a natural circulation loop under variable pressure. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, ENFIR, 10., Belo Horizonte, 2017. Anais… Rio de Janeiro: ABEN, 2017, p. 1-80.
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Published
2021-07-08
How to Cite
Vianna, A. L. B., Faccini, J. L. H., & Su, J. (2021). Transient modelling of a natural circulation loop under variable pressure. Instituto De Engenharia Nuclear: Progress Report, (3), 101. Retrieved from https://revistas.ien.gov.br/index.php/ienprogressreport/article/view/269
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Section
Engineering and Reactor Safety
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Copyright (c) 2018 André Luiz Braucks Vianna, José Luiz Horacio Faccini, Jian Su
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.