The Influence of Interfacial Thermal Contact Resistance on Cooling Performance of the Large Inertia Wall in Nuclear Power Plant

  • Xiaoyan Wu
  • Xu ZhangEmail author
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


The cooling performance of the heat sink wall within a limited time is a main factor to ensure the thermal environment of the main control room (MCR) under accident conditions in CAP series nuclear power plant. To analyze the effects of thermal contact resistance (TCR) on the cooling performance, we propose a three-dimensional unsteady heat transfer model, which couples the resistance–capacity (RC) method and finite difference method and is validated by experiments. The results show that compared to the ones that ignored TCR, when the value is 10−4, 10−3 and 10−2 m2 °C W−1, the cooling capacity is reduced by 1%, 1.7% and 4%, respectively. Furthermore, the maximum cooling release rate is reduced by 5.46, 5.93 and 11.42% with the time lag 8 min, 9 min and 21 min, respectively. Therefore, the reliability of the safety performance of the MCR under accident conditions can be overestimated if the TCR is not considered.


Thermal contact resistance Resistance–capacity method Finite difference method Large inertia wall Cooling performance 


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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.School of Mechanical EngineeringTongji UniversityShanghaiChina
  2. 2.College of Civil Engineering and ArchitectureJiaxing UniversityJiaxingChina

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