摘要
利用HTRI软件模拟了四分扇形螺旋折流板换热器在高温高压环境中的应用。考察了壳程流量(G)、折流板间距、螺旋角和壳体长径比(L/D)对螺旋折流板换热器综合传热性能(Up)的影响,并与单弓形折流板换热器进行了对比。结果表明:折流板间距越大,螺旋角越小,Up越高;螺旋折流板的传热性能明显优于相同工况下的单弓形折流板,且G和L/D越大,这种优势越明显。
Application of quadrant-sector helical baffled heat exchangers in the high temperature and high pressure condition was simulated by using HTRI software. The influence of mass flowrate（G）, baffle spacing, helix angle and length-to-diameter ratio（L/D） on the performance（Up） of helical baffled heat exchangers were studied and compared with single-segmental baffled heat exchangers. The results show that, the larger the baffle spacing or the smaller the helix angle, the higher the Up. The helical baffled heat exchangers always display better performance than the single-segmental baffled heat exchangers under the same operating conditions. And the superiority becomes more significant with increasing of G or L/D.
出处
《当代化工》
CAS
2015年第12期2898-2902,共5页
Contemporary Chemical Industry
关键词
螺旋折流板换热器
折流板间距
螺旋角
长径比
Helical baffled heat exchanger
Baffle spacing
Helix angle
Length-to-diameter ratio
