摘要
建立了波纹管流动和传热的数值模型,实现了换热器波纹管结构的参数化建模;以换热量、内管阻力和环隙阻力为评价指标,制定了波纹管4因素3水平正交试验,对9种结构的波纹管分别进行了数值模拟;对正交试验的结果进行了极差和方差分析,得到了各结构参数对波纹管的换热和阻力性能的影响规律,并用综合平衡的方法确定最优的波纹管结构参数组合,可为套管式换热器波纹管的设计和改进提供有价值的参考。
The numerical model for fluid flow and heat transfer within bellows was established and the parametric model for the structure of tube heat exchanger bellows was achieved.Taking the heat exchange quantity,the internal tube resistance and annular gap as evaluation indexes,the scheme of bellows＇ orthogonal test which including 3 factors and 3 levels was designed to simulate bellows＇ 9 different structures respectively;basing on difference and variance analysis of orthogonal testing results,the effect of different structural parameters on the bellows was achieved to determine an optimal combination of structural parameters with a balance method,and this provides a reference for the design or improvement on the tube heat exchanger bellows.
出处
《化工机械》
CAS
2013年第1期77-81,共5页
Chemical Engineering & Machinery
关键词
套管式换热器
波纹管
正交试验
方差分析
优化
double-tube heat exchanger
bellows
orthogonal test
variance analysis
optimization
