Nuclear Techniques ›› 2018, Vol. 41 ›› Issue (10): 100603-100603.doi: 10.11889/j.0253-3219.2018.hjs.41.100603

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Analysis of natural circulation flow field inside the air-cooled channel of molten salt-air heat exchanger in the nitrate natural circulation loop

HOU Zhen1,2, CAI Chuangxiong1, ZHANG Yapeng1,2, YANG Qun1, HE Zhaozhong1, CHEN Kun1   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-03-26 Revised:2018-05-11 Online:2018-10-10 Published:2018-10-16
  • Supported by:
    Supported by the Strategic Priority Research Program of Chinese Academy of Sciences (No.XDA02050100)

Abstract: [Background] The application of passive safety systems can contribute to security and possibly reduce spending target of new nuclear power plant designs. Analysis methods and design must be employed to ensure that the systems perform their intended functions.[Purpose] This study aims to analyze the natural circulation of air inside the air cooling channel of molten salt-air heat exchanger in the nitrate natural circulation loop (NNCL).[Methods] Numerical simulation was employed to study the heat transfer performance by the FLUNT6.3 software. Both the air velocity field and distribution of temperature field were studied to analyze the characteristics of flow fields inside the air-cooled channel of molten salt-air heat exchanger.[Results] The distribution graph of velocity field and temperature field under various operating conditions was made into charts and graphics. The transient distribution variation rules of different sections are obtained. The results are approximately consistent with the record summarized by optical fiber measurement.[Conclusions] The results show that the molten salt-air heat exchanger of air cooling channel can form good natural circulation and take away the heat. It provides a theoretical basis for the operation and transformation of the air-cooled channel.

Key words: NNCL, Chimney, Natural circulation, Computational fluid dynamics

CLC Number: 

  • TL364