PREDICTIVE MODELING OF STEAM CONDENSATION ONTO FINNED TUBES IN THE PRESENCE OF NONCONDENSABLE GASES FOR PASSIVE SAFETY REACTOR CONTAINMENT HEAT EXCHANGERS

摘要

A mechanistic model is presented to predict the steam condensation on containment finned tubes in the pres- ence of noncondensables (NCs). The total thermal resis- tance from bulk gas to coolant is formulated as a parallel combination of the convective and condensation gas re- sistances coupled in series to those of the condensate layer, the wall, and the coolant.