Research on the steam–gas pressurizer model with Relap5 code

Steam-gas pressurizers are self-pressurizing, and since steam and noncondensable gas are used to sustain their pressure, they experience very complicated thermal-hydraulic phenomena owing to the presence of the latter. A steam-gas pressurizer model was developed using Relap5 code to investigate such...

Full description

Saved in:
Bibliographic Details
Published in:Nuclear science and techniques 2017-05, Vol.28 (5), p.1-8, Article 58
Main Authors: Ma, Xi-Zhen, Jia, Hai-Jun, Liu, Yang
Format: Article
Language:English
Subjects:
and
code
Noncondensable
Energy
gas
Heat
Hadrons
Heavy Ions
mass
Nuclear Energy
Nuclear Physics
pressurizer
Condensation
Relap5
transfer
Steam–gas
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Steam-gas pressurizers are self-pressurizing, and since steam and noncondensable gas are used to sustain their pressure, they experience very complicated thermal-hydraulic phenomena owing to the presence of the latter. A steam-gas pressurizer model was developed using Relap5 code to investigate such a pressurizer's thermal-hydraulic characteristics.The important thermal-hydraulic processes occurring in the pressurizer model include bulk flashing, rainout, wall condensation with noncondensable gas, and interfacial heat and mass transfer. The pressurizer model was verified using results from insurge experiments performed at theMassachusetts Institute of Technology. It was found that noncondensable gas was one of the important factors governing the pressure response, and the accuracy of the developed model would change with different mass fractions and types of noncondensable gas.
ISSN:1001-8042
2210-3147
DOI:10.1007/s41365-017-0223-x