CFD analysis of PAR performance as function of inlet design

Park, Kweon-Ha; Khor, Chong Lee

doi:10.1016/j.nucengdes.2015.10.023

Cited by 6 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Changing the internal structure from perspective of the reaction mechanism can well change the hydrogen elimination performance of PAR. For example, the shape of catalytic plate (Park and Khor, 2016), (Park et al, 2011), catalyst particle size (Tuo et al, 2018), (Zhu et al, 2015), and heat transfer mechanism around the catalyst surface (Agrawal et al, 2017), (Agrawal et al, 20152015) can all have an effect on the efficiency of PAR.…”

Section: Figurementioning

confidence: 99%

In-containment hydrogen behavior simulation and hydrogen concentration control under LBLOCA accidents

Xue²,

Ding³

et al. 2022

Front. Energy Res.

View full text Add to dashboard Cite

During a design basis accident in a pressurized water reactor (PWR), the released hydrogen through reactor breaks would induce the hydrogen detonation. The hydrogen passive autocatalytic recombiner (PAR) is widely used as a hydrogen elimination measure in nuclear power plants due to its passive capability, low starting threshold and easy installation. The present work aims to study the hydrogen risk after the occurrence of cold section double-end shear fracture large break loss coolant accident (LBLOCA) by using the 3D computational fluid dynamics program GASFLOW. A full containment model of CPR1000 is built. The hydrogen production rate inside the containment after LBLOCA is calculated from the related physicochemical reactions. The hydrogen transport, hydrogen concentration distribution and temperature distribution inside the containment are simulated. The effects of different roughness of the structure surface on the simulation are investigated, and it is proved that the operation of PAR can control the hydrogen concentration under the safety threshold of 4 vol%. The effects of hydrogen flow rate and PAR’s position on the hydrogen elimination efficiency are studied. Based on these studies, this paper makes some suggestions and theoretical references for the spatial arrangement scheme of PAR in the containment to optimize the hydrogen elimination efficiency.

show abstract