化工学报 ›› 2020, Vol. 71 ›› Issue (7): 3042-3049.DOI: 10.11949/0438-1157.20200109
收稿日期:
2020-02-03
修回日期:
2020-04-10
出版日期:
2020-07-05
发布日期:
2020-07-05
通讯作者:
王科
作者简介:
吴鹏飞(1996—),男,硕士研究生,基金资助:
Pengfei WU(),Ke WANG(),Jue ZHAO
Received:
2020-02-03
Revised:
2020-04-10
Online:
2020-07-05
Published:
2020-07-05
Contact:
Ke WANG
摘要:
实验研究了板壳式换热器波纹通道内垂直向上气-液两相流动的流型和压降特性,讨论了圆形波纹通道内流型特征及转变机理,根据相界面形态特征将流型划分为泡状流、弹状流、膜状流和搅混流;同时分析了流型与压降之间的关系,发现泡状流中的压降波动幅值最小,弹状流与膜状流次之,搅混流中压降波动幅值最大;获得了波纹通道内单相以及气-液两相压降的分布规律,拟合了单相压降关联式,并基于Lockhart-Martinelli理论,通过分析两相摩阻系数与Martinelli参数的关系拟合了波纹通道内两相流动压降关联式,发现Chisholm参数C的值与Chisholm最初建议的光滑管内层流-层流的值接近。
中图分类号:
吴鹏飞, 王科, 赵珏. 绝热状态下板壳式换热器壳侧的流型与压降[J]. 化工学报, 2020, 71(7): 3042-3049.
Pengfei WU, Ke WANG, Jue ZHAO. Flow pattern and pressure drop on shell side of shell and plate heat exchanger under adiabatic state[J]. CIESC Journal, 2020, 71(7): 3042-3049.
板片直径D/mm | 角孔直径d/mm | 表面扩张因子 | 波纹节距Pc/mm | 角孔距离LP/mm | 波纹夹角φ/(°) | 波纹高度b/mm | 水力直径Dh/mm |
---|---|---|---|---|---|---|---|
454 | 80 | 1.16 | 8.8 | 344 | 75 | 2.2 | 4.4 |
表1 板片参数
Table1 Plate parameters
板片直径D/mm | 角孔直径d/mm | 表面扩张因子 | 波纹节距Pc/mm | 角孔距离LP/mm | 波纹夹角φ/(°) | 波纹高度b/mm | 水力直径Dh/mm |
---|---|---|---|---|---|---|---|
454 | 80 | 1.16 | 8.8 | 344 | 75 | 2.2 | 4.4 |
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