Host: The Japan Society of Mechanical Engineers
Name : The 30th International Conference on Nuclear Engineering (ICONE30)
Date : May 21, 2023 - May 26, 2023
In this study, a fundamental study on the safety of passive radiation cooling RPV (reactor pressure vessel) cooling system using radiation cooling and radiation is conducted. The surface of the heating element inside the RPV simulates the surface of a pressure vessel, and a surface heater installed inside the RPV is heated to generate natural convection and radiation inside the RPV. A short stainless-steel vessel, which is about 1/20th scale of the actual cooling system, was used as the experimental apparatus, and the results of heating experiments were shown. The results of CFD analysis and visualization experiments taken with the experimental apparatus were compared to understand the internal flow.
The pressure vessel surface of the actual machine generates 600 kW of heat loss during rated operation. The experimental results on the scale model confirmed that it is possible to remove the heat loss. So, analytically, and experimentally demonstrate the feasibility of the concept of a passive cooling system and show that it is possible to remove heat dissipation from the RPV.
