化学工程2012，Vol.40Issue(8)：47-51,5.DOI:10.3969/j.issn.1005-9954.2012.08.011
并流多通道管壳式换热器壳程传热性能
Shell-side heat transfer performances of shell-and-tube heat exchanger with multi-parallel-channel
摘要
Abstract
Shell-side heat transfer performances of inlet and outlet of longitudinal flow shell-and-tube heat exchanger with multi-parallel-channel (MPC) were numerically simulated. The influences of baffle on the local heat transfer coefficient distribution of inlet region, local-mean Nu distributions, and mean Nu of heat exchanger were investigated with pipe-line-number, N, Re and different punching ratio, respectively. The results reveal that with the decreasing of N, the non-uniformity of local heat transfer coefficient is effectively improved and there is not any heat transfer skip area when N =7. It also shows that fluid-distribution-baffles ( FDBs) can not only effectively improve the local heat transfer coefficient distribution of inlet region but also enhance the global Nu of heat exchanger. The comparison of different FDBs shows that FDB of No. 1 has the best performance and can enhance Nu by 10%-12%.关键词
局部传热系数/分布挡板/并流多通道/管壳式换热器Key words
local heat transfer coefficient/ distribution baffle/ multi-parallel-channel/ shell-and-tube heat exchanger分类
能源科技引用本文复制引用
曾文良,张正国..并流多通道管壳式换热器壳程传热性能[J].化学工程,2012,40(8):47-51,5.基金项目
湖南省自然科学基金资助项目(10JJ9021) （10JJ9021）
国家自然科学-广东联合基金(U0934005) （U0934005）
表面功能结构先进制造广东普通高校重点实验室开放基金(SFS-KF201014). （SFS-KF201014）
