TITLE:
Numerical Simulation of PRHR System Based on CFD
AUTHORS:
Bin Jia, Jianping Jing, Xuedong Qiao, Chunming Zhang
KEYWORDS:
PRHR HX; IRWST; Numerical Simulation; FLUENT; C-Type Heat Transfer Tubes
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.1 No.6,
December
3,
2013
ABSTRACT: In this paper numerical simulation
of PRHR HX and IRWST is demonstrated using FLUENT, and different numbers of
C-type heat transfer tubes and coolant inlet temperature’s effects for the
residual heat removal capacity of PRHR HX, IRWST thermal stratification and
natural circulation have been researched. It’s found that at a constant flow
area when heat transfer tubes’ number increased outlet temperature of PRHR HX
is lower, the whole water temperature of IRWST is higher, thermal stratification
and natural circulation are more oblivious. At a constant mass flow when inlet
temperature of PRHR HX increased, inlet flow velocity increases and outlet
temperature is higher. But on the other hand the cooling rate increases at the
same time, the average temperature of IRWST is higher, the range of thermal
stratification expands and the velocity of natural circulation increases.