螺旋折流板换热器壳程流动特性

doi:10.3969/j.issn.0438-1157.2014.08.017

化工学报 ›› 2014, Vol. 65 ›› Issue (8): 2970-2975.DOI: 10.3969/j.issn.0438-1157.2014.08.017

螺旋折流板换热器壳程流动特性

杜文静, 王红福, 程林

山东大学热科学与工程研究中心, 山东济南 250061

收稿日期:2014-02-17 修回日期:2014-04-08 出版日期:2014-08-05 发布日期:2014-08-05
通讯作者: 程林
基金资助:
国家自然科学基金项目（51106090）；山东大学自主创新项目（2012TS190）；国家重点基础研究发展计划项目（2013CB228305）。

Shell side fluid flow characteristics in helical baffled heat exchanger

DU Wenjing, WANG Hongfu, CHENG Lin

Center of Thermal Science and Technology, Shandong University, Jinan 250061, Shandong, China

Received:2014-02-17 Revised:2014-04-08 Online:2014-08-05 Published:2014-08-05
Supported by:
supported by the National Natural Science Foundation of China (51106090) and the National Basic Research Program of China (2013CB228305).

摘要/Abstract

摘要： 可视化实验研究了透明螺旋折流板换热器的壳程速度分布特征，重点研究了轴向速度的分布规律及对应的机理。结果表明，轴向速度按照折流板的螺旋周期呈周期性变化，不同流量下同一测点的轴向速度分布规律相似。轴向速度在换热器壳程周边区域分布比较均匀，沿轴向变化幅度较小，流动相对稳定，湍流度较低。由于受三角区漏流的影响，管束中心区域轴向流速急剧增大，沿轴向变化幅度较大，稳定性差，湍流强度较高。中心区域轴向速度平均值明显高于外围区域，离换热器中心越近，轴向速度越大。随着壳程流量的增大，中心区域轴向速度的增幅高于外围区域。管束中心处轴向速度波动剧烈，壳程流量较小时，中心处轴向流速平均值最大，随着流量的增加，湍流度增大，流体返混现象明显，中心处轴向流速平均值逐渐减小。

关键词: 螺旋折流板换热器, 实验验证, 流动, 超声多普勒测速仪

Abstract: Experimental study was explored with the ultrasonic Doppler velocimeter on the shell side fluid flow characteristics in helical baffled heat exchanger made from acrylic glass. Emphasis was on the axial velocity distribution characteristics. Results indicate that the axial velocity is uniformly distributed in the circumferential region of the shell side. Benefiting from the leakage flow in the triangular region, the corresponding axial velocity in the central region is rapidly increased. With the increase of mass flow rate, the variation magnitude of axial velocity in the central region is much larger than that in the circumferential region. An obvious fluctuation of axial velocity on the shell side of the helical baffled heat exchanger is also an important phenomenon. The mean velocity in the central region increases with the mass flow rate, but this feature is absent when the corresponding turbulent flow is dominant and backmixing flow occurs.

Key words: helical baffled heat exchanger, experimental validation, flow, ultrasonic Doppler velocimeter

中图分类号:

TK124

杜文静, 王红福, 程林. 螺旋折流板换热器壳程流动特性[J]. 化工学报, 2014, 65(8): 2970-2975.

DU Wenjing, WANG Hongfu, CHENG Lin. Shell side fluid flow characteristics in helical baffled heat exchanger[J]. CIESC Journal, 2014, 65(8): 2970-2975.

参考文献 17

[1]	Lutcha J, Nemcansky J. Performance improvement of tubular heat exchangers by helical baffles [J]. Chemical Engineering Research & Design, 1990, 68 (3): 263-270
[2]	Bell K. Heat exchanger design for the process industries [J]. Journal of Heat Transfer, 2004, 126 (6): 877-885
[3]	Mater B I, Chunangad K S, Boxma A J, et al. Most frequently used heat exchangers from pioneering research to worldwide applications [J]. Heat Transfer Engineering, 2006, 27 (6):4-11
[4]	Stehlik P, Wadekar V V. Different strategies to improve industrial heat exchange [J]. Heat Transfer Engineering, 2002, 23 (6): 36-48
[5]	Andrews M, Master B I. Three-dimensional modeling of a helix heat exchanger using CFD [J]. Heat Transfer Engineering, 2005, 26 (6): 22-31
[6]	Master B I, Chunangad K S, Boxma A J, et al. Most frequently used heat exchangers from pioneering research to worldwide applications [J]. Heat Transfer Engineering, 2006, 27 (6): 4-11
[7]	Wang Qiuwang, Chen Guidong, Chen Qingyang, et al. Review of improvements on shell-and-tube heat exchangers with helical baffles [J]. Heat Transfer Engineering, 2010, 31 (10): 836-853
[8]	Kral D, Stelik P, Vander P H J. Helical baffles in shell-and-tube heat exchangers (Ⅰ): Experimental verification [J]. Heat Transfer Engineering, 1996, 17 (1): 93-101
[9]	Zhang Jianfei, Li Bin, Huang Wenjiang, et al. Experimental performance comparison of shell-side heat transfer for shell-and-tube heat exchangers with middle-overlapped helical baffles and segmental baffles [J]. Chemical Engineering Science, 2009, 64: 1643-1653
[10]	Jafari Nasra M R, Shafeghat A. Fluid flow analysis and extension of rapid design algorithm for helical baffle heat exchangers [J]. Applied Thermal Engineering, 2008, 28 (11/12): 1324-1332
[11]	Chen Yaping (陈亚平), Dong Cong (董聪), Cao Ruibing (操瑞兵), et al. Experimental study on shell side heat transfer performance of circumferential overlap trisection helical baffle heat exchangers [J]. Journal of Engineering Thermophysics (工程热物理学报), 2012, 33 (7): 1193-1196
[12]	Taher F N, Movassag S E, Razmi K, et al. Baffle space impact on the performance of helical baffle shell and tube heat exchangers [J]. Applied Thermal Engineering, 2012, 44: 143-149
[13]	Chen Yaping, Sheng Yanjun, Dong Cong, et al. Numerical simulation on flow field in circumferential overlap trisection helical baffle heat exchanger [J]. Applied Thermal Engineering, 2013, 50: 1035-1043
[14]	Wang Qiuwang, Chen Qiuyang, Chen Guidong, et al. Numerical investigation on combined multiple shell-pass shell-and-tube heat exchanger with continuous helical baffles [J]. International Journal of Heat and Mass Transfer, 2009, 52: 1214-1222
[15]	Wang Suhua (王素华), Wang Shuli (王树立), Zhao Zhiyong (赵志勇). Studies on flow characteristic of heat exchangers with helical baffles [J]. Journal of Petrochemical Universities (石油化工高等学校学报), 2001, 14 (1): 64-67
[16]	Sun Qi (孙琪), Chen Jiajia (陈佳佳), Zhu Ying (朱莹), et al. Hydrodynamic studies on the shells of the heat exchangers with overlap helical baffles [J]. Chemical Machinery (化工机械), 2008, 35 (1): 10-13
[17]	Wang Chen (王晨), Sang Zhifu (桑芝富). Flow characteristic of heat exchanger with helical baffles [J]. Journal of Experiments in Fluid Mechanics (实验流体力学), 2010, 24 (2): 19-23

螺旋折流板换热器壳程流动特性

Shell side fluid flow characteristics in helical baffled heat exchanger

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