The MISTRA facility is a large scale experiment, designed for the validation of thermal-hydraulics multi-D codes. A short description of the facility, the set up of the instrumentation and the test program are presented. Then, experimental results, studying axisymmetric flows of steam injected in the containment and condensed on temperature regulated walls are detailed. Experimental evaluation of the mass and heat transfer coefficients is proposed, then they are compared with the prediction of usual models for condensation, such as Tagami Uchida (0D codes) and the dimensionless correlations (multi-D codes).

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