Experimental Study on Quench Temperature Characteristics During Reflooding in an Annular Channel

Wang Jinyu; Wang Jun; Zan Yuanfeng

doi:10.13832/j.jnpe.2024.070064

Volume 46 Issue 3

Jun. 2025

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Wang Jinyu, Wang Jun, Zan Yuanfeng. Experimental Study on Quench Temperature Characteristics During Reflooding in an Annular Channel[J]. Nuclear Power Engineering, 2025, 46(3): 131-136. doi: 10.13832/j.jnpe.2024.070064

Citation:

Wang Jinyu, Wang Jun, Zan Yuanfeng. Experimental Study on Quench Temperature Characteristics During Reflooding in an Annular Channel[J]. Nuclear Power Engineering, 2025, 46(3): 131-136. doi: 10.13832/j.jnpe.2024.070064

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Experimental Study on Quench Temperature Characteristics During Reflooding in an Annular Channel

doi: 10.13832/j.jnpe.2024.070064

Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2024-06-25
Rev Recd Date: 2024-07-10

Available Online: 2025-06-09

Publish Date: 2025-06-09

Abstract

Abstract

Quench temperature is a key indicator of quenching in the process of core reflooding, and it characterizes the initial wall temperature at the onset of quenching on the fuel element surface. Study of quench temperature is helpful to understand quench mechanism and develop quench models. Based on an experimental study of characteristics of quench temperature in a vertical annual channel, the influences of initial wall temperature, inlet coolant temperature, inlet mass flow rate, and heating power density on quench temperature were investigated. The results show that the quench temperature increases with the increase of initial wall temperature and heating power and the decrease of inlet coolant temperature. Heating power weakens the effect of inlet coolant temperature on quench temperature. At lower heating power, quench temperature increases with the increase of inlet mass flow rate; at higher heating power, quench temperature decreases with the increase of mass flow rate.
- Annular channel,
- Reflooding,
- Quench temperature

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References(10)

References

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