Numerical Simulation of PRHR System Based on CFD

Bin Jia, Jianping Jing, Xuedong Qiao, Chunming Zhang

Nuclear and Radiation Safety Center, Beijing, China.

DOI: 10.4236/jamp.2013.16015                

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.

Keywords

PRHR HX; IRWST; Numerical Simulation; FLUENT; C-Type Heat Transfer Tubes

Conflicts of Interest

The authors declare no conflicts of interest.

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