正五边形管排方式管束传热和流动阻力特性研究  

Research on heat transfer and flow resistance characteristics of regular pentagon tubes arrangement

作　　者：陈水林 马培勇[1] 许本海 CHEN Shuilin;MA Peiyong;XU Benhai(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Huantai Bio Energy Technology Development Co.,Ltd.,Xuancheng 242000,China)

机构地区：[1]合肥工业大学机械工程学院,安徽合肥230009 [2]安徽环态生物能源科技开发有限公司,安徽宣城242000

出　　处：《合肥工业大学学报（自然科学版）》2018年第6期748-751,756,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家科技支撑计划资助项目(2012BAD30B01)

摘　　要：文章提出一种正五边形管排方式,对其传热和流动阻力特性进行了试验研究,并运用综合性能评价准则(performance evaluation criteria,PEC)将其与传统的正三角形管排方式进行了对比分析。结果表明:在雷诺数Re∈[9 000,22 000]范围内,正五边形管束比正三角形管束的努塞尔数Nu平均提高约9.3%,欧拉数Eu平均增加约13.4%,综合性能评价因子η在1.00~1.08之间,在高Re时正五边形管排方式更具应用价值。The regular pentagon tubes arrangement（RPTA）was presented,and its heat transfer and flow resistance performances was studied and compared with those of the traditional positive triangle tubes arrangement（PTTA）by comprehensive performance evaluation criteria（PEC）.The results showed that in the range of 9 000-22 000 of Re number,the Nunumber of RPTA increased by an average of 9.3% and the Eunumber increased by an average of 13.4% compared with those of PTTA,respectively.The comprehensive performance evaluation factorηwas in 1.00-1.08.It has certain application value adapting RPTA in high Re number.

关 键 词：正五边形管排 传热特性 流动阻力特性 正三角形管排 综合性能评价准则(PEC) 

分 类 号：TK123[动力工程及工程热物理—工程热物理]