Refill Effectiveness using High-Boiling Point Emergency Coolant

Abstract

This paper presents the results of a study to estimate the effect of coolant boiling temperature on the refilling of hot, vapour-filled pipes. The study used a prototype transient analysis code containing a subroutine library developed to compute the required fluid properties. Simulations are presented that use the prototype code to examine flashing, quench, rewet and refill in four different, increasingly complex geometries. The studies indicate that the derived fluid properties are thermodynamically consistent, and refill times are dramatically reduced when boiling is avoided.