Research on Influence of Air Gap and Contact Thermal Resistance on Thermal Safety of Container for  Spent Fuel Dry Transfer

Zhu Linglin; Tang Qionghui; Chen Liutong

doi:10.13832/j.jnpe.2021.06.0230

Volume 42 Issue 6

Dec. 2021

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Zhu Linglin, Tang Qionghui, Chen Liutong. Research on Influence of Air Gap and Contact Thermal Resistance on Thermal Safety of Container for Spent Fuel Dry Transfer[J]. Nuclear Power Engineering, 2021, 42(6): 230-236. doi: 10.13832/j.jnpe.2021.06.0230

Citation:

Zhu Linglin, Tang Qionghui, Chen Liutong. Research on Influence of Air Gap and Contact Thermal Resistance on Thermal Safety of Container for Spent Fuel Dry Transfer[J]. Nuclear Power Engineering, 2021, 42(6): 230-236. doi: 10.13832/j.jnpe.2021.06.0230

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Research on Influence of Air Gap and Contact Thermal Resistance on Thermal Safety of Container for Spent Fuel Dry Transfer

doi: 10.13832/j.jnpe.2021.06.0230

1.
Sate Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, China Nuclear Power Engineering Co., Ltd., Shenzhen, Guangdong, 518172, China
2.
China Nuclear Power Design Co., Ltd. (Shenzhen), Shanghai, 200241, China

Received Date: 2020-09-10
Rev Recd Date: 2020-10-28
Publish Date: 2021-12-09

Abstract

Abstract

The gap between the structural shell and the lead layer is one of the important paths for the transfer container to discharge decay heat, and the heat transfer between the two is affected by the contact thermal resistance. Based on the thermal safety assessment of the transfer container, the air gap with different thickness is set for the contact thermal resistance between the lead layer and the structural shell produced during the lead filling process, and the transient numerical simulation during horizontal transfer is carried out by using FLUENT software. The results show the contact thermal resistance generated by the air gap layer between the lead layer and the structural shell causes a significant temperature difference between the two. The temperature difference increases with the thickness of the air layer. Excessive temperature difference can easily cause the lead layer to overheat and lose the shielding safety function; In the design and manufacturing process of the transfer container, the optimization of the lead filling process shall aim to reduce the gap thickness between the lead layer and the structural shell, and enhance the fit degree between the two layers, so as to improve the thermal safety performance of the transfer container.
- Spent fuel dry storage,
- Transfer container,
- Thermal safety analysis,
- Air gap and contact thermal resistance

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References(12)

References

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