CFD - АНАЛІЗ ТЕПЛОВОЛОГІСНОГО СТАНУ НОВОГО БЕЗПЕЧНОГО КОНФАЙНМЕНТУ ЧАЕС (проєктні параметри)

• Datum: 2022
• Hauptverfasser: Krukovskyi, P.G., Smolchenko, D.A.
• Format: Artikel
• Sprache: Ukrainian
• Veröffentlicht: Institute of Engineering Thermophysics of NAS of Ukraine 2022
• Online Zugang: https://ihe.nas.gov.ua/index.php/journal/article/view/514
• Назва журналу: Thermophysics and Thermal Power Engineering

The article discusses the conditions for the long-term (centennial) operation of the New Safe Confinement (NSC), the conditions for maintaining operability in the annular space, which contains all the metal supporting structures of the NSC. These structures are pipes of different diameters from 0.4 to 1 m, the number of which is 7.5 thousand. To ensure the absence of corrosion on these pipes during a 100-year service life in this space, the volume of which is 1,000,000 m3, it is necessary to maintain relative humidity at a level of no more than 40%. The ventilation system, three-dimensional model and results of modeling of the heat-moisture state of the NSC ring space in the conditions of design and emergency modes of operation are considered. To analyze and predict the heat and humidity regime in the annular space, a mathematical and computer model of the NSC has been developed, including both the annular space and the main volume. The model allows simulating the volumetric distribution of temperature and humidity at different parameters of air dehumidification and different climatic conditions outside. The developed model demonstrates the operability of the model both for the conditions of analyzing the distribution of concentrations and for predicting the heat and humidity state in the annular space in the event of a failure of the ventilation system, and also allows you to analyze the optimal control of the ventilation system to improve the energy efficiency of the system.