Analysis of Heat and Mass Transfer Process for AP1000 NPP PCS Using GOTHIC8.0 Code

The GOTHIC8.0 code was used to analyze heat and mass transfer process for passive containment cooling system (PCS) of AP1000 NPP, and the analysis results were compared and evaluated by theoretical calculation and code analysis. The results show that the DLM-FM model is adopted to model the condensation process on the inside wall of containment, the Film model is used to model the evaporation process on the outside wall film of containment. It shows that GOTHIC8.0 code is applicable to analyze heat and mass transfer process for PCS of AP1000 NPP and it is possible to be another tool to analysis AP1000 NPP containment response during DBA.