高温气冷堆中间换热器异型管强化换热研究  

Investigation on Heat Transfer Enhancement of Special-shaped Tubes in the Intermediate Heat Exchanger of a High Temperature Gas-cooled Reactor

作　　者：胡庆祥 彭威 高跃[1] 王捷 HU Qingxiang;PENG Wei;GAO Yue;WANG Jie(Institute of Nuclear and New Energy Technology,Advanced Nuclear Energy Technology Cooperation Innovation Center,Key Laboratory of Advanced Reactor Engineering and Safety,Ministry of Education,Tsinghua University,Beijing 100084,China;Tsinghua University-Zhang Jiagang Joint Institute for Hydrogen Energy and Lithium-Ion Battery Technology,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学核能与新能源技术研究院先进核能技术协同创新中心先进反应堆工程与安全教育部重点实验室,北京100084 [2]清华大学-张家港氢能与先进锂电技术联合研究中心,北京100084

出　　处：《工程热物理学报》2023年第7期1935-1942,共8页Journal of Engineering Thermophysics

基　　金：国家重点研发计划(No.2018YFB1900500);北京市自然科学基金项目(No.JQ21009);国家科技重大专项(No.ZX069)。

摘　　要：本文对用于高温气冷堆中间换热器的两种异型管(横纹管和螺纹管)强化传热性能及其机理进行了三维数值模拟研究。结果表明:当无量纲波纹高度(e/d)和无量纲波纹间距(p/d)相同时,横纹管具有更好的强化换热性能,努塞尔数最高提升了85%;而螺纹管则具有更好的综合性能,PEC最高可达1.08。两种异型管的强化换热机理在于波纹增强了管内流体的湍流脉动,且横纹管对流体湍流脉动的增强更为有效。In the present study,the enhanced heat transfer performance and mechanism of two types of special-shaped tubes(transversely corrugated tubes and helically corrugated tubes)used in the intermediate heat exchanger of a high temperature gas-cooled reactor are investigated using three-dimensional numerical simulations.The results show that when the dimensionless corrugation height(e/d)and dimensionless corrugation pitch(p/d)are the same,the transversely corrugated tubes have better enhanced heat transfer performance,the Nusselt number is increased by up to 85%;The helically corrugated tubes have better comprehensive performance,the PEC is up to 1.08.The enhanced heat transfer mechanism of the two special-shaped tubes is that the corrugation enhances the turbulent pulsation of the fluid,and the enhancement effect of the transversely corrugated tube is more effective.

关 键 词：高温气冷堆 中间换热器 异型管 强化换热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]