The paper deals with the application of the passive heat transport concept. This concept differs from the conventional heat transport concept based on the use of a single-phase medium (pressurized water) in application of a two-phase medium (steam-water) and permits to provide the safe decay heat transport from a reactor at emergency cooldown without time limit due to reduced energy store in the loop and absence of active components.
The natural circulation of the coolant contributes to the reliability and safety of offshore reactor installations, especially in an emergency situation with a complete de energization of the power plant. In this regard, the use of technical and design solutions for the emergence of natural circulation (EC) is appropriate. The article discusses the properties of the EC, the options for the layout of the reactor plant, the need for the EC, the features of the ramjet steam generator in emergency and normal modes.
Based on the results of an experimental study of the properties of a small-scale model of passive heat removal, obtained in static and dynamic modes with an interval of 1 second, the statistical characteristics of the main parameters of the system considered as stationary random functions were estimated. The mathematical expectation, variance and normalized correlation function were determined.
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