The Estimated Duration of Effective Operation of the Autonomous PHRS, Comparing the Heat Sink to Cooling Water vs Ambient Air
Journal: Bulletin of the South Ural State University series Power Engineering
Year: 2016

The article presents the layout and operation principles of an autonomous thermosiphon-based passive residual heat removal system (PRHRS) from the primary circuit of the nuclear power plant with VVER reactor under beyond-design accident conditions with complete long-term blackout, loss of feed water and primary LOCAs. Peculiarities of residual heat removal to water or ambient air by autonomous thermosiphon PRHRS are presented. The results of the analytical evaluation and estimated duration of ef