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Science and Technology of Nuclear Installations
Volume 2008, Article ID 479673, 7 pages
Research Article

Use of the Natural Circulation Flow Map for Natural Circulation Systems Evaluation

Department of Mechanical, Nuclear and Production Engineering, University of Pisa, 56126 Pisa, Italy

Received 26 August 2007; Accepted 17 December 2007

Academic Editor: Dilip Saha

Copyright © 2008 M. Cherubini et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The aim of this paper is to collect and resume the work done to build and develop, at the University of Pisa, an engineering tool related to the natural circulation. After a brief description of the different loop flow regimes in single phase and two phase, the derivation of a suitable tool to judge the NC performance in a generic system is presented. Finally, an extensive comparison among the NC performance of various nuclear power plants having different design is done to show a practical application of the NC flow map.