Study on steady state change calculation of natural circulation parameters

Huadian Technology ›› 2019, Vol. 41 ›› Issue (1): 9-12.

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Study on steady state change calculation of natural circulation parameters

1.School of Nuclear Science and Engineering, North China Electric Power University, Beijing 102206, China;2.Institute of Nuclear Thermalhydraulic Safety and Standardization, North China Electric Power University,Beijing 102206, China; 3.Beijing Key Laboratory of Passive Safety Technology for Nuclear Energy, North China Electric Power University, Beijing 102206, China; 4.Key Laboratory of Thermalhydraulics Technology for Nuclear Reactors, Chengdu 610041, China

Published:2019-01-25

Abstract

Abstract:

The parameters of natural circulation in steady state play an important role in improving the capacity of natural circulation. The change law of natural circulation flow and other parameters in steady state are studied. Given related parameters, the effective pressure head can be adjusted by changing the outlet temperature of the cooling section.After updating the related physical property parameters, the change laws of natural circulation flow rate, pressure head and cooling power of the each cooling section under different parameters are analyzed. The results show the coolant density and specific enthalpy at the outlet of cooling section increase gradually with the increase of the coolant temperature at the outlet of cooling section. The increase of power in heating section will cause the increase of natural circulation flow rate.The results provide reference for improving the natural circulation capacity and further research.

Key words:

steady state, natural circulation, outlet temperature, circulating flow

ZHOU Tao1,2,3，ZHU Liangyu1,2，CHEN Jie1,2，ZHANG Jialei1,2，HUANG Yanping4.

Study on steady state change calculation of natural circulation parameters

[J]. Huadian Technology, 2019, 41(1): 9-12.

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Study on steady state change calculation of natural circulation parameters

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