硝酸盐自然循环回路熔盐空气热交换器风冷通道内流场特性分析

doi:10.11889/j.0253-3219.2018.hjs.41.100603

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 Zhen^1,2, CAI Chuangxiong¹, ZHANG Yapeng^1,2, YANG Qun¹, HE Zhaozhong¹, CHEN Kun¹

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

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

HOU Zhen, CAI Chuangxiong, ZHANG Yapeng, YANG Qun, HE Zhaozhong, CHEN Kun. Analysis of natural circulation flow field inside the air-cooled channel of molten salt-air heat exchanger in the nitrate natural circulation loop[J].Nuclear Techniques, 2018, 41(10): 100603-100603.

References

1 Lomperski S, Pointer W D, Tzanos C P, et al. Generation IV nuclear energy system initiative; air-cooled option RCCS studies and NSTF preparation[J]. International Journal of Intelligent Systems, 2011, 29(11):971-993.
2 Forsberg C, Hu L, Peterson P, et al. Fluoride-salt-cooled high-temperature reactor (FHR) for Power and Process Heat (DOE/NEUP——11-3272)[R]. Vienna:International Atomic Energy Agency, 2015.
3 Yang Z J, Gou J L, Shan J Q. et al. Analysis of SBLOCA on CPR1000 with a passive system[J]. Nuclear Science and Techniques, 2017, 28(1):10. DOI:10.1007/s41365-016-0154-y.
4 王凯, 蔡创雄, 何兆忠, 等. 硝酸盐自然循环回路系统特性分析[J]. 核技术, 2015, 38(4):040602. DOI:10.11889/j.0253-3219.2015.hjs.38.040602. WANG Kai, CAI Chuangxiong, HE Zhaozhong, et al. Characteristics analysis of nitrate salt natural circulation loop[J]. Nuclear Techniques, 2015, 38(4):040602. DOI:10.11889/j.0253-3219.2015.hjs.38.040602.
5 Yue C C, Chen L L, Lyu K F. et al. Flow characteristics of natural circulation in a lead-bismuth eutectic loop[J]. Nuclear Science and Techniques, 2017, 28(3):39. DOI:10.1007/s41365-017-0187-x.
6 Tzanos C P. CFD analysis for the applicability of the natural convection shutdown heat removal test facility (NSTF) for the simulation of the VHTR RCCS[R]. Office of Scientific & Technical Information Technical Reports, 2007. DOI:10.2172/925350.
7 Incropera F P, Dewitt D P, Bergman T L, et al. Principles of heat and mass transfer[M]. Wiley & Sons, 2013.
8 Sohal M S, Ebner M A, Sabhar P. Engineering database of liquid salt thermophysical[R]. Idaho Falls:Idaho National Laboratory, 2010. DOI:10.2172/1086824.
9 陈杨华, 肖炜, 郭文帅, 等. 蛇形管蓄能箱蓄热过程的数值模拟[J]. 南昌大学学报(工科版), 2013, 35(2):163-167. DOI:10.7666/d.Y2402764. CHEN Yanghua, XIAO Wei, GUO Wenshuai, et al. Numerical simulation about thermal energy storage process of serpentine tube energy storage[J]. Journal of Nanchang University (Engineering & Technology), 2013, 35(2):163-167. DOI:10.7666/d.Y2402764.
10 刘敏珊, 杨帆, 董其伍, 等. 流体横掠管束模拟中壁面函数影响研究[J]. 热能动力工程, 2010, 25(5):497-500. LIU Minshan, YANG Fan, DONG Qiwu, et al. Study of the influence of wall surface functions in simulating a fluid laterally sweeping a tube bundle[J]. Journal of Engineering for Thermal Energy&Power, 2010, 25(5):497-500.
11 Dakin J P. Distributed optical fiber sensors[C]. Proceedings Volume 1797, Distributed and Multiplexed Fiber Optic Sensors Ⅱ, 1993. DOI:10.1117/12.141304.

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

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